Research development on the test methods of residual stress

WANG Qingming1, SUN Yuan2
(1. College of Mechanical and Power Engineering, East China University of Science and Technology, Shanghai
200237, China; 2. College of Mechanical Engineering, Shanghai Dianji University, Shanghai 200240, China)

Abstract: According to the research development on the ordinary test methods of residual stress, it was pointed out that the more suitable test methods were blindhole and Xray method. But the blindhole drilling method may hurt specimen, Xray method request strict test environment, and the other test methods cant fulfill industrial demand on effectiveness, accuracy and operation convenience. The residual stress measuring based on indentation has been considered noteworthy. The indentation response is related to residual stress existing in components. So the values from indentation response are in good agreement with that from the blindhole method, meanwhile specimen hurt may be avoided, the residual stress measuring technology based on indentation response will definitely display its engineering application prospects.
Key words: local load; indentation response; residual stress