Shot Peening of Gears
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The articles below are archived in the shotpeener.com LIBRARY compiled and maintained by Jack Champaigne at Electronics Incorporated. A form of the word "gear" appears somewhere in the title or abstract.
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Total articles: 182
TitleYearAuthorSourceAbstract
TECHNOLOGY TOOLS - APPS FOR GEAR MAKERS 2012 Kathy Levy, InfoProse The Shot Peener magazine, Vol 26 / Issue 1, Winter 2012 IndianaGear provides a wide range of open gearing capabilities, from mining gearing to production runs of CBNground transmission gears. The company recently added a 33,000 sq. ft. ...
INDUSTRY NEWS - James Kernan Named 2011 Shot Peener of the Year 2012 The Shot Peener Staff The Shot Peener magazine, Vol 26 / Issue 1, Winter 2012 James Kernan is an Aerospace Engineer employed by the U.S. Army Aviation and Missile Research, Development and Engineering Center in Huntsville, Alabama. James is responsible for t...
New Landing Gear Materials 2011 The Shot Peener Staff The Shot Peener magazine, Vol 25 / Issue 4, Fall 2011 Composites and Shot Peening New Landing Gear Materials The development of new materials for the aerospace industry is moving at a rapid pace. And what herculean tasks these new ...
Increasing of Contact Fatigue Strength by Nitriding and Shot-Peening Treatment 2011 Nakonieczny, Monka Conf Proc 2011: ICSP-11 South Bend, IN USA (pgs. 453-458) This report describes the method of raising contact fatigue strength, designated for application in the manufacture of gears. Investigations were carried out on 41CrAlMo7 grade ste...
Adaptation of Shot Peen Parameters for Gear Geometry 2011 Breuer, Matlock Conf Proc 2011: ICSP-11 South Bend, IN USA (pgs. 447-452) Abstract Shot peening is a well established process for the surface enhancement of gearing. Gearing is a primary example of a high cycle fatigue application that can benefit from ...
Influence of shot peening and superfinishing on gears as a repair tool of damaged faces of teeth generated by overheating whe 2011 Kritzler Conf Proc 2011: ICSP-11 South Bend, IN USA (pgs. 405-410) Abstract Hard finishing by grinding of case hardened gears is a common process in the gear industry with final roughness of the flank normally Ra= 0.2...
Residual Stress Enhancement of X-2M Foreign Object Damage Tolerance 2011 VanDalen, Hopkins, Hill Conf Proc 2011: ICSP-11 South Bend, IN USA (pgs. 195-200) Abstract The objective of this paper is to quantify the effects of residual stresses imparted by laser shock peening on the foreign object damage (FOD) tolerance of X-2M, a high-s...
Residual stress measurement in carbonitrided shot-peened steel using the incremental groove machining coupled with speckle pa 2011 Van Wijk, Francois, Frabolot, Sura, Ghodhbani Conf Proc 2011: ICSP-11 South Bend, IN USA (pgs. 153-158) Abstract Shot peening is a commonly used surface treatment to introduce compressive residual stress in carbonitrided gears. An effective measurement of stress gradient is an impor...
Enhancement of High Strength Steel Endurance, Application to Automotive Transmission Components Using a New Type of Ceramic S 2011 F-X Abadie, G.P. Marconi, E. Morgano Conf Proc 2011: ICSP-11 South Bend, IN USA (pgs. 31-36) Abstract With the first generation of ceramic shot it has been proven in industrial use that deeper residual stresses together with outstanding surface condition and very high lev...
Variability Study of the Flapper Peening Process 2010 Sylvain Forgues, Shockform, Inc The Shot Peener magazine, Vol 24 / Issue 2, Spring 2010 Flapper Peening Process Study by Sylvain Forgues Introduction Flapper peening is an important process to quickly re-peen small areas that have seen surface damage. It was develop...
Gearing Up for the Next Generation 2010 Arshad Hafeez, Performance Review Institute (PRI) The Shot Peener magazine, Vol 24 / Issue 2, Spring 2010 Understanding specifications and standards, such as AC7117 or AS9100, is not enough...
Shot Peener of the Year, Ing. Michele Bandini 2010 The Shot Peener Staff The Shot Peener magazine, Vol 24 / Issue 1, Winter 2010 The staff of The Shot Peener magazine is proud to award Michelle Bandini, General Manager of Peen Service, the 2009 Shot Peener of the Year award. Michele was chosen because of his...
Influence Of Shot Peening On Fatigue Strength Of Aluminum-alloy Parts 2008 H. Suzuki, Dr. H. Makino, K. Mizuno, T. Tomita Conf Proc: ICSP-10 Tokyo, Japan 2008 ABSTRACT Considering energy savings and the growing environmental concerns, light weight components are increasingly becoming popular in various fields of engineering applications...
Present Status Of Shot Peening Machine In Auto Parts Processing Lines In Japan 2008 T. Oyama Conf Proc: ICSP-10 Tokyo, Japan 2008 ABSTRACT In common manufacturing process of automotive gears, shot peening is set up between hardening process and final grinding process. As the purpose of shot peening is surfac...
Effect Of Shot Peening After Carbonitriding On The Contact Fatigue Strength Of Chromium-containing Steel 2008 A. Goloborodko, Y. Watanabe Conf Proc: ICSP-10 Tokyo, Japan 2008 ABSTRACT The effect of shot peening on the contact fatigue strength of carbonitrided steel has been investigated by roller-pitting testing under conditions similar to those experi...
A Life Prediction And Fatigue Characteristics Of Differential Gear Applied By Optimal Peening Condition 2008 Dong Sun Lee, Seong Kyun Cheong Conf Proc: ICSP-10 Tokyo, Japan 2008 ABSTRACT Experiments and fatigue analysis were accomplished to evaluate and predict the fatigue life of shot peened gear in this paper. The fatigue life was evaluated depending on...
Influence Of Workpiece Conditions On Residual Stress Induced By Shot Peening 2008 Ishikura, Kano, Kobayashi, Ujihashi, Okumura Conf Proc: ICSP-10 Tokyo, Japan 2008 ABSTRACT In recent years, higher energy shot peening treatment, which gives higher compressive residual stress has been strongly required to improve the fatigue strength of carbur...
Improvement In Tooth Surface Strength Of Carburized Transmission Gears By Fine Particle Bombarding Carburized Process 2008 M. Yoshizaki, Hino Motors, Ltd. Conf Proc: ICSP-10 Tokyo, Japan 2008 Gear surface fatigue endurance tests were carried out using gears treated with the fine particle bombarding process (denoted hereafter as FPB) under three different peening conditi...
Effect Of Shot Peening On Temper Hardness 2008 Kobayashi, Ujihashi, Okumura, Ishikura, Kano, Kato Conf Proc: ICSP-10 Tokyo, Japan 2008 ABSTRACT Shot peening improves contact fatigue strength of mechanical components due to work hardening. However, in the case of components used under high pressure such as gears o...
Effect Of Cavitation Shotless Peening On Fatigue Strength Of Steel Gear 2008 M. Seki, H. Soyama, M. Fujii, A. Yoshida Conf Proc: ICSP-10 Tokyo, Japan 2008 ABSTRACT The purpose of this study is to investigate the effect of cavitation shotless peening (CSP) on the rolling contact fatigue strength of steel gears. The casehardened steel...
Specialty Automotive Peening Applications 2007 Kumar Balan The Shot Peener magazine, Volume 21 / Issue 3, Summer 2007 Kumar Balan, Product Engineer, Wheelabrator Group Equipment / Process Design & Specification Conformance Conclusion Awareness of the benefits of shot peening has certainly grown ...
Recycled glass proves a hit with U.S. Army 2006 Bronnie Allen, WRAP The Shot Peener magazine, Vol 20 / Issue 3, Summer 2006 This case study has been printed with permission. For more information, contact: Bronnie Allen, WRAP, The Old Academy, 21 Horse Fair, Banbury OX16 0AH, Tel: 0808 100 2040, Please ...
Gear Peening: The Intense Story 2006 Kumar Balan, Product Engineer The Shot Peener magazine, Vol 20 / Issue 3, Summer 2006 Wheelabrator Group Equipment / Process Design & Specification Conformance Article originally published in Gear Product News and is reprinted with permission of the author. We com...
Shot Peening in Steam Turbines 2005 Ralph Ortolano, Robert Kleppe, Russell Chetwynd Turbine Rescue Shot peening has been used for centuries to improve the fatigue life in many metals, and in modern applications (1920’s), began with shot peening automobile engine valve springs....
Method for Producing Gears and/or Shaft Components with Superior Bending Fatigue Strength and Pitting Fatigue Life From Conve 2005 Ajithkumar Sandur, Kandavali US Patent 2005/0061402A1 ABSTRACT A conventional aluminum killed alloy Steel for case hardening of gear(s) and/or shaft components consisting of 0.10 to 0.30 weight % Carbon, 0.15 to 0.35 weight % Silicon...
Optimising Shot Peening Parameters Using DoE 2005 Lassithiotakis, Aylott, Shaw, Ooi, Petit-Renaud Conf Proc: ICSP-9 (pg 406-412) ABSTRACT The control of residual stress is crucial in ensuring the integrity of engineering components and shot peening can be used to good effect to introduce the beneficial comp...
Analysis of the Influence of Shot Peening on the Fatigue Life of a Hard Chromium Electroplated AISI 4340 Steel Underplate 2005 Torres, Baptista, Nascimento, Voorwald Conf Proc: ICSP-9 (pg 273-279) ABSTRACT Hard chromium plating is widely used on AISI 4340 landing gears to obtain high levels of resistance against wear and corrosion. However, it causes a reduction in the fati...
Comparison of Mechanical Suppression by Shot Peening and Low Plasticity Burnishing to Mitigate SCC and Corrosion Fatigue Fail 2005 Prevey, Jayaraman, Ontko, Shepard, Ware, Coate Conf Proc: ICSP-9 (pg 247-252) TITLE: Comparison of Mechanical Suppression by Shot Peening and Low Plasticity Burnishing to Mitigate SCC and Corrosion Fatigue Failures in 300M Landing Gear Steel ABSTRACT 300M ...
Residual Stress Sensitivity of Case-Hardened Notched Specimen 2005 Krug, Lang, L Conf Proc: ICSP-9 (pg 235-240) ABSTRACT Case-hardened gear wheels e.g. in vehicle transmissions are very high cyclically stressed components. Their lifetime is determined by the interaction of loading, tooth fl...
Optimisation of Carburising and Shot Peening, In Order To Improve Both Bending and Contact Fatigue Behaviour For Gear Applica 2005 C Peyrac, J Flavenot Conf Proc: ICSP-9 (pg 214-220) ABSTRACT Carburised steels are used extensively in the gear industry to improve the wear resistance of parts [1,2]. However, it is well known that shot peening, which creates comp...
Effect of Ultra Shot Peening on Contact Surface Strength 2005 Watanabe, Hattori, Handa, Yoshida, Taki, Duchazeau Conf Proc: ICSP-9 (pg 179-184) Authors: Y. Watanabe, K. Hattori, M. Handa, N. Yoshida, T. Taki, J-M Duchazeaubeneix, N. Hasegawa ABSTRACT For carburized gear, shot peening treatment is widely recognized for im...
Ceramic Shot Enhancement of High Strength Steel Endurance Application to Springs and Gears 2005 F-X Abadie, L Barralier, S Fleury Conf Proc: ICSP-9 (pg 48-53) ABSTRACT This paper will briefly recall some previous research works on ceramic shot, expose latest complementary works, and show their translation into effective industrial appli...
Shot Peening of Gear Components for the Automotive Industry 2005 Albert Schlatter, Hans J Conf Proc: ICSP-9 (pg 42-47) ABSTRACT Shot peening using blast wheels offers a high level of flexibility and process reliability especially for larger series and larger workpieces. This paper describes shot p...
The Parting Shot, In with the New . . . 2005 Jack Champaigne The Shot Peener magazine, Vol 19 / Issue 1, Winter 2005 Gears. That's what makes the world go 'round. And, in many cases, without shot peening these gears wouldn't be around for very long. Peening will increase the fatigue strength and ...
Why We Shot Peen Gears 2005 David Neidig, Indiana Tool / Indiana Gear The Shot Peener magazine, Vol 19 / Issue 1, Winter 2005 Indiana Tool / Indiana Gear has provided manufacturing services to a global market for nearly 50 years. We provide precision machining services from one piece prototypes to volume ...
How the right finish was the best start 2004 Shot Peening Staff The Shot Peener magazine, Vol 18 / Issue 1, Winter 2004 This is a story about a group of young and talented bicycle frame builders. Idealists they were, this group that wanted to form a democratically-controlled and employee-owned compa...
USF Surface Prep Group - New Gear Peening Research Laboratory at the University of NewCastle Design Unit Sponsored by USF Sur 2003 Industry News The Shot Peener magazine, Vol 17 / Issue 2, Spring 2003 A new laboratory, dedicated to research into the shot peening of automotive gears and transmission systems, has been opened recently at the Gear Technology Centre, operated by the ...
Peening Gears to Customer Specs with Less Air, Equipment and Labor 2003 Robert B. Heaton, Empire Abrasive Equipment Compan The Shot Peener magazine, Vol 17 / Issue 4, Fall 2003 Key cost factors in peening normally involve capital equipment, air consumption, labor, maintenance and rework if parts fail to meet specifications. Any producer of a peening syste...
Media Blasting Apparatus and Method to Prevent Gear Pitting 2003 Michael J. Wern, Mokena, IL US Patent 6,612,909 B2 ABSTRACT An improved method and apparatus for media blasting a workpiece 20 is described. The media blasting apparatus 10 of the present invention includes a media reclaim and rec...
Applying Pressure to Tame Problem Parts 2002 Gerald Conover, Product Manager ABC, Vol 7/ No 3, Summer 2002 Automated Blast Systems Empire Abrasive Equipment Company A manufacturer of pinion gears required a near-white-metal finish on steel billets being fed into a high-production fo...
Effect of Shot Peening on Surface Fatigue Life of Carburized and Hardened AISI 9310 Spur Gears 2002 NASB Technical Paper 2047, 1982 The Shot Peener magazine, Vol 16 / Issue 3, Fall 2002 Dennis P. Townsend and Erwin V. Zaretsky Lewis Research Center Cleveland, Ohio Summary Gear surface fatigue endurance tests were conducted on two groups of 10 gears each of carb...
Dual Shot Peening to Maximize Beneficial Residual Stresses in Carburized Steels 2002 Ahmad, Eaton Corp., Crouch, Metal Improvement Co The Shot Peener magazine, Vol 16 / Issue 2, Summer 2002 Reprinted with permission from Carburizing: Processing and Performance (1989) ASM International, Materials Park, OH 44073-0002, pages 277-281. ABSTRACT Recent advances in shot pe...
The Strength of the Smoothness 2002 Franck Petit-Renaud, M. Phil., B.Sc., DUT The Shot Peener magazine, Vol 16 / Issue 2, Summer 2002 A case study by Franck Petit-Renaud, M. Phil., B.Sc., DUT. USF Impact Finishers (Shot Peening Division), June 2001 Introduction: This short article will aim to present two techni...
If you can't bring the airplane to the blast cabinet . . . 2002 Herb Tobben, Mgr., Sample Processing Laboratory The Shot Peener magazine, Vol 16 / Issue 1, Spring 2002 ZERO Products Div., Clemco Industries Corp. 2002 Clemco Industries Corp. Reprinted with permission The Problem: A large United States Air Force base needed to shot peen the ID ...
Shot Peening on Pelton Wheels: Methods of Control and Results 2002 Marconi, Lauro, Bozzolo Conf Proc: ICSP-8 Sept. 16-20, 2002 Garmisch-Partenkirchen, Germany Authors Paolo Marconi, 2 Effe Engineering s.u.r.l., Manerba del Garda, Italy Marco Lauro, Enel Produzione S.p.A., Turin, Italy Walter Bozzolo, Enel Produzione S.p.A., Turin, Ita...
A Theoretical and Experimental Investigation into the Development of Coverage in Shot Peening 2002 Karuppanan, Romero, de los Rios, Rodopoulos, Lever Conf Proc: ICSP-8 Sept. 16-20, 2002 Garmisch-Partenkirchen, Germany Authors Saravannan Karuppanan*, Jose Solis Romero+, Eduardo R. de los Rios+, Chris Rodopoulos+ and Andrew Levers# *Universiti Teknologi Petronas, Bandar Seri Iskandar, Perak Daru...
Consideration of Shot Peening Treatment Applied to a High Strength Aeronautical Steel with Different Hardnesses 2002 Torres(1), Nascimento(2), Voorwald(2) Conf Proc: ICSP-8 Sept. 16-20, 2002 Garmisch-Partenkirchen, Germany Marcelo A.S. Torres(1), Marcelino Pereira do Nascimento(2), Herman Jacobus Cornelis Voorwald(2) (1) Department of Mechanics/ (2) Department of Materials and Technology -State Univ...
Searching for the Most Suitable Condition and the Suggestion of Each Application in Ultrasonic Shot Peening 2002 Hattori, Watanabe, Handa, Duchazeaubeneix Conf Proc: ICSP-8 Sept. 16-20, 2002 Garmisch-Partenkirchen, Germany Authors Kaneshi Hattori, Yoshihiro Watanabe, Mitsuru Handa, Tokyo Seiko, Japan, Jean-Michel Duchazeaibeneix Sonats, France Abstract Ultrasonic shot peening, named Stressonic, ...
Study on Methodology to Increase Fatigue Limit of Gears 2002 Ando (1), Matsui (2) and Eto (2) Conf Proc: ICSP-8 Sept. 16-20, 2002 Garmisch-Partenkirchen, Germany Authors: Kotoji Ando (1), Katsuyuki Matsui (2) and Hirohito Eto (2) (1) Yokohama National University, Yokohama-shi, Japan (2) Isuzu Motors Ltd., Kawasaki-shi, Japan Introducti...
Shot Peening In Maintenance Of Steel Structures 2001 Salko Djozic Conf Proc: ICSP & BC - 2 Guidelines for choosing appropriate intensity for the desired results of Shot Peening originated from car design and shot peening was found to impart 40% greater efficiency to ca...
Reintroduction of Residual Stress by Shot Peening 2001 P.Parmeswaran, S.V. Mate and M.S. Nadgir Conf Proc: ICSP & BC - 2 Hindustan Aeronautics Ltd., Aircraft Division, Nasik has been engaged in the manufacture and overhaul of Russian origin fighter aircraft for the last 35 years. As of this date the ...
Shot Peening Process And Its Applications 2001 P. S. Puranik v ICSP & BC - 2 Today when a part is not able to withstand the stresses that it is required to, a lot of trial and error effort is put over the part. Its material may be changed, the part may be s...
The Little Book on Shot Peening 2001 Jack Champaigne Electronics Inc, The Shot Peener Shot peening is a special metal surface treatment intended to extend the fatigue life of most metals. The impact of small spherical media called shot creates a dent in the surface...
Inadequate Shot Peening Cited in Two Failures of Left-main Landing Gear On Fokker 100 2001 FSF Editorial Staff Flight Safety Foundation - Aviation Mechanics Bulletin - September/October About 1030 local time July 4, 1999, the crew of a Fokker 100 experienced a severe vibration from the left-main landing gear when they applied the wheel brakes during the landing ro...
Processing System for Increasing the Quality of a Gear and a Barreling Apparatus Usable in the Same 2001 Shigeru Hoyashita, Saga US Patent 6,315,646 B1 A processing system for increasing the quality of a gear having a shot peening apparatus for subjecting, to shot peening, a gear after tooth-forming and surface hardening; a barrel...
Sample Processing Update: Going to Great Lengths for Wierner Warmers 2000 Herb Tobben, Mgr., Sample Processing Laboratory The Shot Peener magazine, Vol 14 / Issue 3, Fall 2000 ZERO Products Div., Clemco Industries Corp. Reprinted with permission The Question A manufacturer asked ZERO to help clean and etch the external surfaces of carbon steel tubes t...
Gear Inspection System from American Stress Technologies, Inc. 2000 News Release The Shot Peener magazine, Vol 14 / Issue 1, Spring 2000 The Gear Inspection System is an off-line audit inspection system used to detect grinding damage and some heat-treat qualities, and to monitor the residual stress from manufacturin...
Method and Apparatus for Highly Strengthening Metal Member 2000 T Suzuki; T Kanno; T Taoka, all of Japan US Patent 6,099,391 A mixture of water and glass beads is ejected to a root of a gear which has been cut to form gear teeth. The glass beads are oriented so as to be ejected to the root, and the glass...
Apparatus for Increasing the Surface Strength of Metal Components 2000 T Matsuyama; H Honda; K Ujihashi, T Ogawa US Patent 6,058,584 A casing has a processing chamber and a drying chamber defined therein by a partition mechanism. The processing chamber houses an impelling mechanism for impelling a mixed stream ...
Solutions in Automated Blast Cleaning 1999 Herb Tobben, Manager ABC, Vol 4/ No 2, Spring 1999 "Thank you" to Clemco Industries for allowing us to share with you infomation from their newsletter ZERO Update. The following covers the work of Herb Tobben, the manager of ZERO'...
Gear Shot Peening Method 1999 Hamasaka; Nakao; Kuse US Patent 5,911,780 A shot peening method for gears capable of hardening a gear without formation of projections on the tops of its teeth and gears having no projections and treated by this shot peeni...
The Shot Peening in the Closed Metallic Chamber 1999 Salko Djozic, B Sc Conf Proc: ICSP-7 (pg 400-404) At which way will be performed the Shot Peening Process is presented on the sketch freely designed. By electric motor is drived whole process in this small space protected by meta...
The Application of Peening by Water in the Closed Vertical Vessel 1999 Salko Djozic, B. Sc. Conf Proc: ICSP-7 (pg 395-399) It is desirable to have this vertical container made by stainless Steel or protected against corrosion with high resistant coating. By two vertical pipes coming in vessel water wi...
Combining Case Hardening and Shot Peening For Gear Steels: Influence on Residual Stress 1999 C Peyrac, JF Flavenot, F Convert Conf Proc: ICSP-7 (pg 362-370) Carburised steels are largely used in the gears industry to improve the wear resistance of parts. However, it is well known that shot peening, which creates compressive residual s...
Improving Fatigue Life of Gears by Shot Peening 1998 T.Jeff Meister and John S. Eckersley Metal Improvement Co. Advances in Gear Technology: A Symposium on Gear Manufacturing Through Powder Metallurgy Shot peening is a very well recognized and documented process in the realm of wroght met...
Non-Destructive XRD: New Industry Breakthrough 1997 Metal Improvement Company Impact: Review of Shot Peening Technology 1997 Metal Improvement Company has engaged the services of Lambda Research to bring to the shot peening industry, a significant breakthrough in the control of the shot peening process....
Shot peening increases gear life 1996 Joe Brown, Senior Editor Power Transmission Design, May 1996, pgs. 61-64 The shot-peening process has long been known to improve the fatigue life of bearings and shafts, and the bending strength of gear teeth. Now it's used to increase the pitting fatig...
Recent Developments in Shot Peening Machine 1996 Hiroji Aoki & Hitoshi Takeda The Shot Peener magazine, Vol 10/Issue 2, June 1996 Reprinted from the Proceedings of ICSP4 ABSTRACT The shot peening process has been increasingly employed as one means of improving the endurance reliability of automotive parts. ...
A Strengthening Method for Metal Parts 1996 Teiji Suzuki and Tadao Sugano, C/o Honda Engineeri Patent, H6-217214 Honda Engineering, a subsidiary in the Honda group, has developed a new processing technology for improving gear strength using water jets. The new technology increases strength b...
Residual Stresses, Microstructure and Fatigue Behaviour of Carburized Layers Before and After Shot Peening 1996 A. Nakonieczny, W. Szyrle Conf Proc: ICSP-6, (p.263-269) The researches were done on steel type 20HNM, used for carburizing. The specimens were carburized at different time periods as to obtain differential thickness of difusion layers....
Improvement of Surface Durability of Case-Carburized and Hardened Gear by Shot Peening and Barrelling Processes 1996 Munetoh Hashimoto, Sigeru Hoyashita Conf Proc: ICSP-6, (p. 34-43) In this investigation, a surface durability (pitting limit) of the case-carburized steel rollers with surface hardness of 750 Hv is examined under rolling/sliding conditions using ...
Effects of Shot Peening and Heat Treatment on Endurance Limits of Austempered Ductile Cast Iron Gears 1996 S.Ezoe, M.Hashimoto, I.Asano, Y.Tanno Conf Proc: ICSP-6, (p. 14-23) ADI materials are going to be applied to transmission gears. Endurance tests of the ADI gears were carried out to discuss summarily the effects of shot peening and heat treatment o...
Landing Gear Structural Integrity 1996 Pink, Jack BF Goodrich, Aerospace Engr Mag. March 96 A landing gear features an oleo-pneumatic shock strut which, as the name suggests, is filled with oil and air. The strut has a dual function:to dissipate the kinetic energy of ver...
Vacu-Blast Installs Gearbox Peening System at Rover Torque rating increased by over 10% 1994 News Release from Vacu-Blast International The Shot Peener magazine, Vol 8 / Issue 4, Winter 1994/95 Vacu-Blast has installed a special shot peening facility at the Rover Group plant in Longbridge, to process gearbox components for the Rover 600 and 800 Series. The facility has en...
Intensity Online-Monitoring 1994 R.G.Bosshard, Blasting Technology Engineer, Volket The Shot Peener magazine, Vol 08/Issue 2, Summer 1994 ABSTRACT Up today, the ALMEN-method introduced in 1942, is the common way to measure intensities, mainly in the field of shotpeening. Many scientific contributions demonstrate a c...
Shot Peening of Carburized Gears. Influence of Main Shot Peening Parameters 1994 F. Archer - Societe Francaise de Grenaillage de Pr The Shot Peener magazine, Vol 8 / Issue 4, Winter 1994/95 Abstract Damage on gears is mainly due to fatigue in fillet radii of teeth roots or pitting near the pitch diameter. No to little available articles in existing literature clearl...
Gearing Up For Higher Loads 1993 John S. Eckersley The Shot Peener magazine, Vol 07/Issue 3, Fall 1993 If only cars could fly. . . Have you noticed that the design philosophy of the car that you drive is approaching the design philosophy for airplanes? No, we don't mean that cars ...
Creating An In-House Shot Peening Specification For Gears, Part 2 1993 Mark Lawerenz, Imants Ekis The Shot Peener magazine, Vol 07/Issue 1, Spring 1993 Understanding less conventional shot peening methods helps manufacturers develop an in-house specification for gears. This article also relates specification to the part drawing. ...
Metal Improvement Company: Review of Shot Peening Technology 1993 John S. Eckersley, Editor Impact: Spring 1993 IN THIS ISSUE: Gearing Up For Higher Loads. If only cars could fly: Have you noticed that the design philosophy of the car that you drive is approaching the design philosophy for...
Influence of Inclusions on the Fatigue Strength of Shot Peened Carburized Steel 1993 Toyoda, Kanazawa, Hisamatsu, Ishiguro Conf Proc: ICSP-5, (p.333-340) Shot peening method is widely applied to gas carburized gears for automobile to improve the fatigue strength. When the strength is improved by shot peening, the fractue origins te...
Influence of Nonmetallic Inclusion on Fatigue Strength of Carburized and Shot Peened Gear Steel 1993 H. Kagawa, M. Ishiguro, and S. Hisamatsu Conf Proc: ICSP-5, (p.126-133) In order to clarify influences of nonmetallic inclusion on fatigue strength of carburized and shot peened gear steel, bending fatigue tests and pitting fatigue tests were carried o...
Increasing Endurance Limit of Gears by 20 - 50% 1993 John Eckersley Conf Proc: IITT Detroit, MI October 26, 1993 Today's major trend in the gearing industry is to extract increasinlgy higher outputs from smaller and smaller components. The reliability of computer monitored shot peening methd...
Creating An In-House Shot Peening Specification For Gears, Part I 1992 Mark Lawerenz, Imants Ekis The Shot Peener magazine, Vol 06/ Issue 4, Winter 1992/93 Whether large or small, companies can take certain steps to ensure reliable shot peening specifications for the gears they process. Learn how in this first of a two-part article. ...
Shot-Peened High-Moly Gears 1992 The Shot Peener magazine, Vol 06/Issue 2, Summer 1992 REPRINTED FROM ADVANCED MATERIALS & PROCESSES, MAY 1992 COPYRIGHT ASM INTERNATIONAL, MATERIALS PARK, OHIO Japanese automakers are using a "dual peening" method to boost compressi...
Bending Fatigue Performance of Carburized Gear Steels 1992 Ray Seiber SAE: 920533 This papaer presents the results of a designed experiment and confirmatinal testing of the bending fatigue properties of boost-diffuse gas carburized gear steels for use in heavy d...
Improvement in Surface Fatigue Life of Hardened Gears by High-Intensity Shot Peening 1992 Townsend, Dennis P. NASA Tech Report 91-C-042, ASME, 6th IPTGC Society of Mech. Two groups of carburized, hardened and ground spur gears that were manufactured from the same heat of vacuum-induction-melted-vacuum-arc-remelted(VIM-VAR) AISI 9310 steel were endu...
Application of Gravity Accelerated Shot Peening at GE Aircraft Engines 1992 Whalen, Jim The Shot Peener Workshop 1992 Introduction The shot peening process has been used throughout the automotive and aerospace industries for several decades to impart compressive residual stress into metal compone...
Development Of High Strength Transmission Gears 1992 Okada, Matsumoto, Kawaguchi, Tanaka SAE: 920761 High strength transmission gears have been developed for use in the final gear set of front-wheel-drive vehicles. The steel used as the gear material has a higher molybdenum conte...
Creating An In-house Shot Peening Specification For Gears, Part I & Part II 1992 Lawerenz, M. and Ekis, I Heat Treating, Feb. 1992, p. 22 / Part I, p. 32 / Part II PART I: Whether large or small, companies can take certain steps to ensure reliable shot peening specifications for the gears they process. Learn how in this first of a two-part ...
Application Of Hard Shot Peening To Automotive Transmission Gears 1992 Atsumi Hatano and Kunio Namiki SAE: 920760 Although shot peening is an old technology, it has been revived in the Japenese automotive industry as a means to enhance the fatigue durability of steel components. Particular em...
Testing Shot Peening Stresses in the Field 1991 K. Tiitto, P. Francino, American Stress Technologi The Shot Peener magazine, Vol 04/Issue 4, Winter 1991 The benefits of shot peening are work hardening of the surface and subsequent generation of beneficial compressive stresses at and below the surface. The conventional way of measur...
Brightening Chemical Polishing Solution for Harened Steel Article 1991 Suzuki et al. US Patent 5,256,316 A brightening chemical polishing solution for hardened steel article (e.g., a carburized and quenched gear) comprises hydrofluoric acid having a molar concentration of from 0.2 to ...
Rejuvenation of Aging Aircraft Components by Controlled Shot Peening 1991 John Eckersley and Roger Thompson Metal Improvement Company Aircraft Component design engineers are very well aware of the bene fits of surface residual compressive stresses on new parts as a means of retarding or even preventing ctastrophi...
Shot Peening Plays A Vital Roll In Rejuvenation Of Aging Aircraft 1991 Eckersley, John S. Shot Peening Theory and Appl., IITT Intl., 1991 Aircraft Components design engineers are very well aware of the benefits of surface residual compressive stresses on new parts as a means of retarding or even preventing catastroph...
Shot Peening Can Reduce Effects of Aging on Airframe and Engines 1990 J.S. Eckersley and T.J. Meister Metal Improvement Metal Fatigue, Corrosion Fatigue and Stress Corrosion Cracking are the catastrophic modes of metal failure that can be significantly delayed or even avoided by the use of Controlle...
How We Develop A Heavy-duty Transmission 1990 Shihe, Zhu SAE: Proceedings No. P-139 Aeolus EQ-140 is one of the mass producing medium range heavy duty trucks in China. Some defects on its transmission have been detected. And their improving measures have come ou...
Fatigue Strength Analysis of Carburized Transmission Gears 1990 Y. Okada, M. Yoshida, H. Tahara, T. Matsumoto JSAE Review Vol 11 No 3 Improving the fatigue strength of gears is important for compatibility with rising of engine power, and for miniaturization of lightness of transmission units. Generally, carburiz...
A Study of Inclusions Causing Fatigue Cracks in Steels for Carburized and Shot Peened Gears 1990 T. Toyoda, T. Kanazawa, K. Matsumoto JSAE Review Vol.11 No. 1 The fatigue fractures of carburized and shot peened gears tend to be caused by the non-metallic inclusions under the surface becaruse the fatigue strength of the surface of the gea...
Shot Peening Sepcification Spicer Heavy Axle & Brake Div 1990 Dana Corporation Dana Corporation This specification covers shot peening by the mechanical wheel process. The primary function of shot peening is to induce compressive stresses at the surface and just below the sur...
Improvement in Resistance to Bending Fatigue: Prestress Shot-Blasting of Case-Hardened Steel Gearing 1990 Couratin, D; Guimier, A Galvano-Organo- Traitements de Surface pp439-444 May 1990 For many years prestress shot blasting has been used to improve fatigue limits in steel (e.g. 16CD4). It was used originally for springs and the improvements suggested the process...
The Relation Between Shot Peening Conditions And Fatigue Strength Of Carburized Gears 1990 Matsumoto, Suzuki, Okada Conf Proc: ICSP-4, (p.455-464) The relation between shot peening conditions and fatigue strength of carburized gears was investigated. The fatigue strength of the gears closely corelated to arc height value and...
The Microstructure And The Fatigue Properties Of Shot-peened Carburized Gear Steel 20crmnti 1990 Deng-zhen, Ri-heng, Feng-en, Ji-xue Conf Proc: ICSP-4, (p.527-534) Samples of carburized steel 20CrMnTi a,b,c,d,e and f, were differently shot-peened, then studied by x-ray diffraction, mechanical and physical measurement. The obtained macroscopi...
The Effects Of Shot-peening On Residual Stresses And Fatigue Strength Of Carburized Gear Steels 1990 Hashimoto, Shiratori, Nagashima Conf Proc: ICSP-4, (p.495-504) In order to clarify precisely the effects of shot-peening on the fatigue strength of carburized gear steels, residual stresses, retained austenite and hardness in the surface layer...
Recent Developments In Shot Peening Machine 1990 Aoki, Hiroji and Takeda, Hitoshi Conf Proc: ICSP-4, (p.105-112) The shot peening process has been increasingly employed as one means of improving the endurance reliability of automotive parts. While the effect of shot peening for springs has b...
Influence Of The Surface Properties On The Bending Strength Of Shot Peened Carburized Steel 1990 Hisamatsu, Kanazawa, Toyoda Conf Proc: ICSP-4, (p.477-484) Shot peening method has been found out to be very effective for improvement of surface structure anomalies created on surface of gas carburized steel, and this method is widely app...
Influence Of Residual Stress On Fatigue Of Carburized And Shot Peened Notched Specimens 1990 Ogawa, Yamada, Saruki, Yokoi, Inuzuka Conf Proc: ICSP-4, (p.445-454) Bending fatigue tests were carried out on gears and three differently notched specimens simulating gear-tooth root, which were shot-peened under different conditions without machin...
Improvement Of Hardened Surface By Shot Peening 1990 Ohsawa, M. and Yonemura, T. Conf Proc: ICSP-4, (p.147-158) In the application of shot peening to automotive parts, this process has been the commonly used surface treatment for springs. Today, a tend among automobile manufacturers is to u...
Fatigue Strength Of Gear Steels Shot Peened In Extremely High Intensity Conditions 1990 Adachi, S. Conf Proc: ICSP-4, (p.363-372) For case hardened gear steels shot peening treatment in extremely high intensity conditions can generate the white etching layers in the surface region, which are recognized as the...
Effect Of Shot Peening On The Fatigue Strength Of Carburized Steels 1990 Naito, Ochi, Takahashi, Suzuki Conf Proc: ICSP-4, (p.519-526) To better understand the mechanism by which compressive residual stress improves the fatigue strength of carburized gears, a crack in a rotating bending fatigue test specimen was c...
Effect Of Shot Peening On The Pitting Fatigue Strength Of Carburized Gears 1990 Kobayashi, M. and Hasegawa, K. Conf Proc: ICSP-4, (p.465-476) There are many reports to indicate that shot peening is a valid means to improve the bending strength of gear teeth, but there are only a limited number of reports on its effect on...
Development Of Hard And Tough Steel Shot 1990 Hatano, Namiki, Endo, Doizaki Conf Proc: ICSP-4, (p. 37-46) In order to enhance the performance of machines, steel components have been shot peened, recently very hard with the arc height more than 0.7mmA. Such a process requires hard shot...
Consideration Of Shot Peening In Fatigue Strength Calculation Of Machine Parts 1990 Nakonieczny, A. Conf Proc: ICSP-4, (p.399-410) In calculations of machine parts rarely there are regard of surface layer after heats, heat-chemicals, shot peening and others processes. Some strength calculation methods take of...
Method of Forming Hard Steels by Case Hardening, Shot-Peening and Aging without Tempering 1989 Yukio Arimi US Patent 5,019,182 A method of manufacturing a steel member comprising the steps of : carburizing and quenching or carbo-nitriding and quenching a steel material; shot-peening the steel material quen...
Improved Fatigue Life of a Carburized Gear by Shot Peening Parameter Optimization 1989 R.P. Garibay, N.S. Chang International Conference on Carburizing: Processing & Performance July-1989 The effect of shot peening process parameters on fatigue life was investigated on a carburized helical gear. In most of the shot peening parameter optimization cases, once workpie...
Maximizing the Fatigue Strength of a Carburized Helical Gear Via Optimizing Shot Peening Process Parameters-Part 1: Almen Int 1989 N.S. Chang, R.P. Garibay ASME 5th International Power & Gearing Conference Historically, shot peening has demonstrated the potential for substantial increases in fatigue strength. The lack of consistency in reproducing these values in production can be t...
Shot Peening 1989 Heaton, Robert B. Metal Finishing, July 1989 Shot peening is a cold working process in which the surface of a metal part is bombarded with spherical particles (or shot) formed from cast iron, cast steel, stainless steel, cera...
Guidelines For Establishing An Optimum Shot Peening Specification For Gearing 1989 Lawerenz, Mark and Ekis, Imants SAE: 891933 The shot peening process has been widely recognized for many years as a proven, cost-effective process to greatly enhance the fatigue characteristics of metal parts and eliminate p...
Dual Shot Peening To Maximize Beneficial Residual Stresses In Carburized Steels 1989 Ahmad, Aquil and Donald, E. Crouch, ASM Conf. July, 1989 Recent advances in shot peening technology have resulted in the development of a two stage process to maximize the beneficial surface residual stresses induced in hardened, carburi...
Computer Monitoring Permits Inclusion Of Shot Peening Benefits In Design Allowables 1988 Eckersley, John S. SAE: 881455 Reliability of aircraft components is greatly enhanced by the use of shot peening during manufacturing to prevent or retard metal failures from fatigue, fretting fatigue, stress co...
Carbonitriding and Hard Shot Peening of High-Strength Gears 1988 Y.Muwa, M.Suzawa, Y.Airmi, Y.Kojima, K.Nishimura SAE Technical Paper A new process for manufacturing high-strength gears has been developed to meet the requirements of automobile transmission miniaturization. The points of the process are to increa...
Improving Corrosion And Wear Resistance By Salt Bath Nitrocarburizing Plus Oxidizing In Auto.facil. 1987 Kunst, H. Adv. in Surf. Treat: Tech-Appl-Eff,Vol.5,pp.451-467 Crankshafts, camera parts, furniture fittings, piston rods, tools, gear wheels and many other parts have been salt bath nitrided in mass production for many years. A combination o...
Structural Optimization Of Landing Gears Using Starstruc 1987 Elsaie, A.M., and Santillan,Jr.,R. SAE: 871047 The impact of structural optimization is growing in many industries due to economic pressures demanding efficiency in the design process. This efficiency implies developing produc...
Size Effect On Fatigue Strength Of Shot Peened Carburized Steel 1987 Hisamatsu, S. and Kanazawa, T. Conf Proc: ICSP-3, (p.517-524) There has been an increasing need for stronger and more reliable carburized transmission and axle gears because of motor vehicles getting lighter and engines becoming bigger. As ...
Shot Peening Of The Gear Surface With Ground Cracks 1987 Y. Tan, B. Ma, L. Ren, Q. Ye Conf Proc: ICSP-3, (p.247-252) Tiny cracks always occur on the ground surfaces of case hardened machine particularly for carburized gear with abusive grinding. Most of cracks are within the depths from 0.05mm t...
Practical Aspects of Application of Shot Peening to Improve the Fatigue Behaviour of Metals and Structural Components 1987 Wohlfahrt, H. Conf Proc: ICSP-3, (p.563-584) The aims of this paper are to describe the favourable effects of shot peening which can be useful for the improvement of the fatigue behaviour in practical applications and to dire...
Improved Fatigue Performance Of Gears Through Controlled Shot Peening 1987 Diepart, C.P. and Burrell, N.K. Conf Proc: ICSP-3, (p.169-177) Controlled shot peening improves the fatigue performance of gear teeth. Today, there is no argument over that claim. Extensive data from programs of fatigue testing gear teeth co...
Fatigue Strength Of Case Hardened And Shot Peened Gears 1987 Hirsch, Wohlfahrt, Macherauch Conf Proc: ICSP-3, (p.547-560) Shot peening is a production treatment for components as for example springs, shafts or gears resulting in improvements of the fatigue strength. Shot peening induced changes occur...
Effect Of Work-piece Hardness On Peening Intensity Under Local Peening 1987 Sharma, M. C. Conf Proc: ICSP-3, (p.205-212) The time for peening a component depends upon the intensity of peening required. For which first peening intensity under a set of peening parameters such as stand off, shot size a...
Detecting Material Defects In Real Time 1987 Sheppard, Laurel M. Metal Progress, 11/87, pp 53-60 NDE, emerging as a useful tool for online process control, is no longer limited to final or in service-inspection. Sophisticated imaging technical techniques are being developed t...
Additional Shot Peening For Workshop 1987 Salko, Djosic Conf Proc: ICSP-3, (p.163-168) In one normal size manufacturing shop for different types of springs, gears, wheels, car parts, shafts etc. necessary to have special room for shot peening. As indicated on the fi...
Shot-Peening in the Overhaul Process 1986 Robert L. Kleppe, Metal Improvement Co. SAE Technical Paper Series Advances in chemistry and parts design have extended the useful life of many engine, structural and landing gear components. Sufficient data has been collected and summarized to es...
Structure And Contact Endurance Of Case-hardened Steel 12kh2n4a After Plastic Surface Deformation 1986 Ryzhov, Gulyaev, Pakhomova Met.Sci.Heat Treat. 28, (3-4) Mar.-Apr. '86 To prolong the life of gear wheel made of chrom-nickel steels, they are subjected to complex treatment to increase their strength including thermochemical treatment and plastic sur...
M9 Ace Transmission Output Shaft Failures 1986 Mentzer, Jr., R.D. Report No. AMSAA-TR-420 During the Follow on Evaluation of the M9 ACE conducted at Ft. Hood, TX in 1985, five transmission output shafts failed. These occurred during competitive side by side trials with...
Effect of the Quality of Material on the Reliability and Life of Gear Wheels (trans.) 1985 Balter, M.A. and Dukarevich, I.S. Met.Sci.Heat Treat 27, (7-8) Jul-Aug. '85 The reliability and life of heavy duty gear wheels are not determined by optimum des alone but also depend to a considerable extent on the properties of the material and their prod...
Shot Peening And Its Effect On Gearing 1985 Lawerenz, Mark D. SAE: 841090 With the trend in gear transmission towards higher capacities, smaller size and overall increases in strength, shot peening is a viable and low-cost alternative to major redesign o...
Improved Gear Life Thorugh Controlled Shot Peening 1985 Burrell, N.K. American Gear Mfrs. Assoc., Tech. Paper No. 85FTM15 Evaluating dynamic loads in gear design has always been a major design consideration. In addition to stresses due to applied loads, however, the impact of residual stresses must a...
Controlled Shot Peening Of Automotive Components 1985 Burrell, N.K. SAE: 850365 The controlled shot peening process is by no means new to the automotive industry. This process is routinely used on many mechanical components to increase fatigue life. In other...
Effect Of Shot-peening On The Fatigue Strength Of Forgings. (retroactive Coverage) 1984 Herbst, P. VDI Z. 126, (23-24) Dec. (1-11) 1984 (German) Shotpeening is a simple and often used process of surface treatment. It influences the subsurface layers and can lead to hardening, formation of residual compressive stress, chang...
How to Improve the Fatigue Properties of Sintered Steels by Combined Mechanical and Thermal Surface treatment 1984 Sonsino, Schlieper, Huppmann Modern Developments in Powder Metallurgy Vol. 16, June '84 The ever increasing demand for sintered components with improved dynamic properties, in which the influence of shot peening, carbonitriding and combinations thereof on the enduranc...
A Perspective On The Performance Of Carburized Gear Steels 1984 Cameron, T. B. SAE: Proceedings No. SP-584 (also Vol. 93, 1984 Recent research on carburized steels has demonstrated a correlation between the toughness properties of a carburized steel and the fatigue performance in combined load testing (hig...
Improving Fatigue Life Through Advanced Shot Peening Techniques 1984 DeLitizia, Alfred T. Manufacturing Engrg., May, 1984, p. 85 X-ray diffraction techniques for quality control in the shot-peening process are discussed. Compressive stress after shot peening, stress measurement, fatigue tests and fatigue li...
Comments on the Energy and Materials Conservation Aspects of Impact Treatment Processes 1982 Meguid, S.A. and Plaster, H.J. J. Mech. Work. Technol. 6, (2-3), Mar. '82 This paper is divided into two parts: the conservation and energy utilization aspects of shot peening and blast cleaning for the purposes of protection and recycling of metallic c...
Effects Of Multiple Shot Peening/cadmium Plating Cycles On High Strength Steel 1982 Kohls, Cammett, Gunder Metcut Research Assoc., Inc. A study was made of the effects of multiple shot-peening and Cd plating operations on high-strength AISI 4340 steel used in aircraft landing-gear applications. No detrimental effe...
Effect Of Shot Peening On Surface Fatigue Life Of Carburized And Hardened Aisi 9310 Spur Gears 1982 Townsend, D.P. and Zaretsky, E.V. NASA Tech. Paper #2047 Gear surface fatigue endurance tests were conducted on two groups of ten gears each of carburized and hardened AISI 9310 spur gerars manufactured from the same heat of material. B...
Extending the Service Life of Railroad Traction Gears 1981 Yudin, D.L. Soviet Engrg. Research 1(2): 37-38 With the increasing loading intensity of railways, and train speed and mass, growing attention is being paid to the problem of raising the strength and durability of traction reduc...
The Effect Of Shot Peening On The Fatigue Life Of Machine Elements 1981 Nakonieczny, A. Conf Proc: ICSP-1, (p. 45-50) The effect of shot peening on fatigue life of selected machine elements has been determined by analysis of stress changes developed in the metal surface. The state of stress in th...
The Effect Of Shot Peening On Contact Fatigue Life Of Carburized Steel 1981 Cheng, J. and Ao, B. Conf Proc: ICSP-1, (p.333-340) With carburized and hardened 20CrMnTi steel ring specimens, contact fatigue experiments were performed under sliding-rolling conditions. The contact fatigue lives of shot-peened s...
Shot Peen Gears For Longer Life 1981 McCormick, Doug Design Engineering, July 1981 Shot peening is a method of producing a residual compressive stressed layer on metal surfaces by bombarding with bird-shot-size pellets. This compressive surface layer can increas...
Residual Stress And Fatigue Strength Of Surface Hardened Components 1981 Koibuchi, Hayama, Kawai Conf Proc: ICSP-1, (p.413-422) The strengthening effect due to surface hardening can be estimated by the dependency of the fatigue strength of hardened material on the residual stress that is equivalent to mean ...
Effect of Multiple Shot Peening / Cadmium Plating on High Strength Steel 1980 Kohls, John B.J.; W. J. Stross Metcut Research Associates Inc Cincinnati OH This report covers the effect of multiple shot peening and cadmium plating operations on a high strength steel alloy used in landing gear applications. The basis for determing thi...
Effects Of Multiple Shot Peening/cadmium Plating On High Strength Steel 1980 Kohls, John and Stross, William Tech. Rep: AFWAL-TR-80-4005 The effect of multiple shot peening and Cd plating operations on a high-strength steel alloy used in landing gear applications is studied. The basis for determining this effect wa...
High Stress Nodular Iron Gears and Method of Making Same 1979 Robert B. Grindahl US Patent 4,222,793 High stress, acicular bainitic, nodular iron gears having residual compressive stresses at the surface of the teeth's roots of at least about 40,000 psi and a subsurface residual c...
A New Heat-treatment Process Overcomes Temperature Relaxation Problems For Spring Users 1979 Slingsby, R.G. Heat Treatment '79 (Conf.),May High-performance springs are demanding increasingly greater use of the potential available from the correct heat treatment of modern spring materials and application of current man...
Isothermal Heat Treated Nodular Iron with Austenitic-Bainitic Microstructure as Material for Gears 1977 Jokipii M.Sc., Kalevi Kymi Kymmene Engineering Santasalo-Transmission The use of nodular iron in the engineering industry is increasing rapidly. The tensile strengths of the most general grades of nodular iron standardized in different countries r...
Boosting Gear Life Through Shot-peening 1977 Daly, James J. Machine Design, Vol.49, No. 10,May'77,p.84-87 Shot-peening is seldom specified in original gear designs. Yet it can improve the life and load-carrying capacity of gears by as much as 20%, often without adding appreciably to c...
Shot Peening Can Help Both Turbine Builder And Operator 1976 Metal Improvement Co. Gas Turbine, November-December 1976 Shot peening to extend fatigue life and prevent stress corrosion of gas turbine components is not a new practice. Yet, it is often bypassed by engineers whose thinking is oriented...
How To Extend Gear Life 1975 Haas, L. Machine Design, May 15, 1975 No gear will last forever. But you can extend the life of a gear set many times over by following a few relatively simple guidelines. Som of them will cost you a few dollars more...
General Specification Shot Peening Processes 1973 Warner Gear Division of Borg-Warner Corporation Warner Gear Division of Borg-Warner Corporation This specification covers the method of surface treatment of transmission gear teeth. ...
How Shot Peening Makes Better Gears 1973 Cary American Gear Mfrs. Assoc,. Nov., 1973 Descriptors: Carbon steels-- Surface finishing; Chromium molybdenum steels-- Surface finishing; Shot peening; Strain hardening; Gears-- Surface finishing...
Failure Analysis Of A Shot-peened Component 1973 Johari, Om, and Sipes, William A. SAE: 730579 A comprehensive scanning electron microscope (SEM) survey of the fracture surfaces of an aircraft main landing gear shock strut piston showed that improper shot peening contributed...
Gears 1969 Crawshaw, S.L. and Kron, H.O. Mach. Design, Dec. 18,'69, 41, -29- Since the design of gear teeth is covered extensively in the literature, this chapter will present information on selecting gearing and incorporating it into an overall drive syste...
Gear Failures: how to recognize them, what causes them, how to avoid them 1967 Eugene Shipley Machine Design, Dece 7, 1967 A gear has failed when it can no longer efficiently do the job for which it was designed. Cause of failure may range from excessive wear to catastrophic breakage. Failure in a gear...
An Analytical Determination Of Speed Factor In Gear Designs 1967 Shimamura, S. and Noguchi, Y. SESA, Vol. XXIV, No. 1 In practical gear design, the speed factor is usually employed which is defined as a ratio of the allowable stredss at required running speed of the gear system to the stress at ze...
Glass Bead Peening Procedures 1965 U. S. Specification MIL-STD-852 This standard establishes minimum requirements and procedures for glass bead peening of ferrous and non-ferrous parts which are subjected to repeated applications of stress such as...
Shot Peening of Pressure Vessels 1964 Sheehan, J. P. IIT Research Institute B1000B1 - Report No. 4 There has been an increasing demand in recent years for ultra-high strength, light-weight pressure vessels for applications that require 100% reliability in service. Two exampl...
Shot Peening In Gear Design 1964 1964 Straub, J. C. American Gear Mfrs. Assoc., No. 109-13, June 1964 Increased fatigue strength due to shot peening has been firmly established by extensive fatigue tests on a wide variety of machine parts. Although the process is used very extensi...
Shot Peening in Relation to Gear Tooth Scoring 1959 Straub, J. C. Lubrication Engineering, Vol 15, March, 1959 Shot peening is recognized as a means of increasing fatigue strength of machine parts. Long accepted as a meams of correcting fatigue failures, the possibilities of its use in the...
Shot Peened Gears As Evaluated By Single Tooth Fatigue Tests 1956 Wulpi, D. J. International Harvester Company Shot peening improves the fatigue strength of gear teeth. There is generally no argument over that statement. But how much of an improvement can actually be made in the load carr...
Lightweight Springs For Limited Life 1956 Spaulding, E.H. SAE: Trans. Vol. 64, 1956, p. 453-457 A spring in the Constellation (749) main landing-gear drag-strut damper was redesigned to save 17 lb. The smaller spring required a reduced-size housing, and the overall weight sa...
Laboratory Fatigue Testing Of Gears 1956 Halgren, John and Wulpi, D.J. SAE Journal, Sept. 10-13, 1956, #808 This paper deals with endurance testing of spur gears in modified four-square gear testing machines, also referred to as special gear testing dynamometers, power circulating gear t...
Strength-stress Life Of Helical Gear Teeth 1953 Wellauer, E. J. SESA, Vol. X, No. 2 Any discussion on the interpretation and application of Test Data should have as its basic slogan: "Only one test can lead to a thousand mesleading opinions". This slogan is parti...
Shot Peening In The Design Of Gears 1953 Straub AGMA, June, 1953 Shot peening is a process which might well be considered in the design of any machine part which is required to carry high loads with a minimum size or weight of the overall unit. ...
Increasing Endurance of Magnesium Castings by Surface Work 1951 Found, George H. Metal Progress, Aug. '51 Cold working the surface of metals to improve fatigue strength has been an intriguing subject of study for 25 years, and in the last ten, such treatments have become a common manuf...
Shot Peening As A Factor In The Design Of Gears 1951 Straub, J. c. Mechanical Engineering, Vol. 73 HOW SHOT PEENING INCREASES BENDING STRENGTH AND PERMITS DESIGN FOR GREATER SCORING RESISTANCE When a pair of gears is required to operate at high loads or high speeds or both, p...
Balanced Gear-tooth Design 1951 Straub, John C. Machine Design, "Design Abstracts", June, p. 178 When a pair of gears is required to operate at high loads or high speeds or both, particularly where weight and size are at a premium, it becomes important to consider shot peening...
Shot Peening - Designers Guide to the Process, its Applications 1948 Fuchs, H.O. and Hutchinson, E.R. Machine Design, Vol. 30, Feb. 6, '58, pp. 116-125 Developed in the late twenties, shot peening was discovered by accident. a small batch of automobile valve springs behaved much better than expected under test. Investigation rev...
Shotpeening 1948 Landecker, Fred K. #480186, Trans. Vol. 2, No. 2, Apr. '48, p. 191-194 The subject of shot peening belongs in a symposium on "the reduction of mechanical wear" because fatigue failures and breakages caused by repeated use should be included in "wear"....
Aircraft Gearing - Analysis Of Test And Service Data 1948 Almen, J. O. and Straub, J. C. American Gear Manufacturers Assoc., June 4, 1948 Since we rarely know the magnitude of loads that are applied to gears in service or the extent to which the stresses from the applied loads are concentrated by elastic deflections,...
Dimensional Value Of Lubricants In Gear Design 1942 Almen, J. O. SAE Journal, September, 1942 Automotive rear-axle gears present one of the most difficult gear-design and lubrication problems that are known, Mr. Almen emphasizes in this paper. The requirements are exacting...
Durability Of Automobile Gears 1937 Almen, J. O. and Straub, J. C. Automotive Industries, Sept. 25 and Oct. 9, '37 The cause of failure of gears in service varies with the type of gears and with the service they perform but, in general, failure is due to tooth breakage, to the destruction of th...
The Work Hardening Of Steel By Abrasion 1927 Herbert Engineering, Oct. 1927 The present work describes an investigation into the hardness induced by severe abrasion in locomotive tyres and rails, and in hardened steel gears and cams from motor-cars. The h...
The Superhardening Of Steel 1927 Herbert Engineering, Sept. 1927 In a paper entitled "The Work Hardening of Steel Abrasion" presented by Mr. E.G. Herbert of Manchester, at the recent Glasgow meeting of the iron and Steel institute, it was conten...