Articles by Dr. David Kirk

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Total articles (91)

Page 1 of 7

  • Hardness Matters
  • Year: 2019, Source: The Shot Peener magazine, Vol 33, Issue 3, Summer 2019
  • INTRODUCTION Hardness, for shot peeners, is resistance to localized plastic deformation induced by impacting shot particles. We therefore have two areas of interest: the hardness of the compone...

  • The Solver Story An Autobiography
  • Year: 2019, Source: The Shot Peener magazine, Vol 33, Issue 2, Spring 2019
  • INTRODUCTION: Many years ago Jack Champaigne asked me if I could write a computer program that would determine peening intensity quantitatively. This was to be an alternative to the subjective m...

  • Metals are Alive!
  • Year: 2019, Source: The Shot Peener magazine, Vol 33, Issue 1, Winter 2019
  • INTRODUCTION Metallic objects abound in shot peening—steel shot, Almen strips, nozzles, wheels, etc. The metals used are alive! Essentially metals are made up of a regular framework of vibrati...

  • The Curvature of Peened Almen Strips and Its Applications
  • Year: 2018, Source: The Shot Peener magazine, Vol 32, Issue 4, Fall 2018
  • This article embraces an analysis of why peened Almen strips have this parabolic shape together with experimental evidence and a consideration of its practical significance. Understanding the cause...

  • Almen Strip Quality
  • Year: 2018, Source: The Shot Peener magazine, Vol 32, Issue 3, Summer 2018
  • INTRODUCTION: Shot peeners are required to declare values of peening intensity derived at prescribed intervals. These values depend, to a significant extent, on the quality of the Almen strips th...

  • Component Distortion An Overview
  • Year: 2018, Source: The Shot Peener magazine, Vol 32, Issue 2, Spring 2018
  • INTRODUCTION: Every shot peener distorts components—if only in the form of Almen strips. They would be useless if they didn’t distort! Distortion is caused by a combination of plastic deformati...

  • Decarburization: The Silent Enemy
  • Year: 2018, Source: The Shot Peener magazine, Vol 32, Issue 1, Winter 2018
  • INTRODUCTION: A large proportion of metallic engineering components are made from carbon steels. These components may encounter high temperatures during furnace heat treatment and/or hot working...

  • Variations on the Almen Technique
  • Year: 2017, Source: The Shot Peener magazine, Vol 31, Issue 4, Fall 2017
  • INTRODUCTION: First instigated in 1942 with a patent submission, the Almen technique has now provided a reliable and universally accepted method of measuring peening intensity based on the defle...

  • Work-Hardening During Peening
  • Year: 2017, Source: The Shot Peener magazine, Vol 31, Issue 3, Summer 2017
  • INTRODUCTION Shot peening is normally applied in order to improve the fatigue properties of components. This improvement is due to two factors: (1) Work-hardening of the surface layer and (2) Compr...

  • The Importance of Work
  • Year: 2017, Source: The Shot Peener magazine, Vol 31, Issue 2, Spring 2017
  • INTRODUCTION: Work and rate of doing work are, arguably, the most important parameters in the Universe. No event can happen unless some work is done at a measurable rate. Even blinking an eye require...

  • Coverage Variability
  • Year: 2017, Source: The Shot Peener magazine, Vol 31, Issue 1, Winter 2017
  • INTRODUCTION Coverage is one of the most important parameters in shot peening. It is specified in J2277 to be the “Percentage of a surface that has been impacted at least once by the peening med...

  • Shot Stream Generation
  • Year: 2016, Source: The Shot Peener magazine, Vol 30, Issue 4, Fall 2016
  • Introduction: Air-blast shot streams consist of a mixture of fast-flowing air and entrained shot particles carried along by the flow of air. Generating an air-blast shot stream embraces two main prob...

  • Peening Intensity True Meaning and Measurement Strategy
  • Year: 2016, Source: The Shot Peener magazine, Vol 30, Issue 3, Summer 2016
  • INTRODUCTION The two most important quantitative terms for shot peeners are “Coverage” and “Peening Intensity.” “Coverage” has a single, unambiguous, definition: The percentage of the p...

  • Optimization of Shot Peening Coverage
  • Year: 2016, Source: The Shot Peener magazine, Vol 30, Issue 2, Spring 2016
  • INTRODUCTION Shot peening coverage of components is, of course, very important. The importance of coverage optimization is emphasized in SAE J2277 with its: “Effectiveness of shot peening is dire...


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David Kirk

Born into a multi-generational steelworking family — his grandfather was a Head Roller and his father was an Open-Hearth steelmaker and also a part-time lecturer at Rotherham Technical College — David won a scholarship to a local grammar school. Grammar school success secured three scholarships that took him to Birmingham University to read Industrial Metallurgy. He was the first member of his family to attend university. After graduation, a Department of Science scholarship allowed research that finished with a doctorate for a thesis entitled "The Hot Working of Metals."

First employment as a Research Fellow at Birmingham University was followed by a short period as a Senior Research Metallurgist at the International Nickel Company's Research Laboratory in Birmingham. David then joined Coventry University as a Senior Lecturer in Metallurgy. At Coventry University, he was promoted to Principal Lecturer in Metallurgy and then Chairman of the School of Materials. Initial research activity centered on X-ray residual stress measurement which prompted him to establish Coventry Science Consultants Ltd. This was followed by his installation of a shot-peening research laboratory at the University with active encouragement and advice by the late Jack Plaster.

Upon retirement, David was first appointed as a Visiting Research Fellow and is now Visiting Professor of Materials at Coventry University. David has, after retirement, published some 70 research papers and articles on shot peening and residual stresses. Following his organization of the International Conference on Shot Peening in Oxford, he was elected Chairman of the International Scientific Committee for Shot Peening and he was subsequently elected to be a Life member. David was awarded The Shot Peener of the Year award in 2001 for his significant contributions to the advancement of shot peening.

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