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Vol.7 No.1previous AASP14 (87-88-89-90-91-92-93-94-95-96-97-
98-99-100-101-102-103-104-105)-NT69-70
Academic Articles
Regular Paper Vol.7 No.1 (2015) p.14 - p.19
 

Semi-nondestructive Measurement of Weld Residual Stress Distribution in Austenitic Stainless Steel using Indentation Technique without Reference Load under Non-stress State
 
Daisuke KANAMARU1, Shigetaka OKANO1, Masahito MOCHIZUKI1
 

1 Graduate School of Engineering, Osaka University, 2-1 Yamada-oka, Suita, Osaka 565-0871, Japan

 
Abstract
In this study, semi-nondestructive measurement of non-equibiaxial stress using the indentation technique without a reference load under the non-stress state has been applied to low-carbon austenitic stainless steel welds. In order to clarify the material dependency of the applied procedure, two constants (the load ratio and the conversion factor) for stress determination were experimentally quantified and compared with those of high-strength structural steel. The accuracy of stress measurement by the procedure applied to low-carbon austenitic stainless steel welds was verified through a comparison with the X-ray diffraction and stress relief methods. Based on the results, the applied procedure had less dependency on the material properties of these steels and was in good agreement with the conventional techniques in the overall distribution of residual stress.
 
Keywords
Semi-nondestructive stress measurement, Weld residual stress, Indentation technique, Austenitic stainless steel, Knoop indenter, Vickers indenter
 
Full Paper: PDF EJAM Vol.7No.1 pp.14-19 "Semi-nondestructive Measurement of Weld Residual Stress Distribution in Austenitic Stainless Steel using Indentation Technique without Reference Load under Non-stress State"
Article Information
Article history:
Received 1 November 2014
Accepted 21 January 2015