Innovative Fatigue Test Procedures and Equipment for Shot Peened Specimens and Components

Author:  T.Bahn,J.Hug
Source:  Conf Proc 2014: ICSP-12 Goslar, Germany (pgs.570-575)
Doc ID:  2014139
Year of Publication:  2014
Abstract:  
Shot peening is one of the most successful, efficient and universal applicable technologies to increase the fatigue strength of material specimens and components. To investigate the effect of different parameters of the process of shot peening, destructive fatigue tests are most favorable. The tests must be fast, accurate and energy efficient to get best and durable test results. This paper presents a big range of test equipment and also the test procedures how to do these tests with high frequency, high precision and energy efficient test machines in the high cycle fatigue HCF area. The latest development of very high frequency material and component test machines up to 300, 500 and 1100 Hz will be presented. Various test procedures and gripping devices for different loading like tension-compression, rotating bending, pure bending, torsion and multiaxial loading will be introduced. The currently most applicable and used procedure of stair case method will be explained and shown with an example. Various component test machines for typical components for the shot peening process will be visualized.