Accurate measurement of highly triaxial residual stresses

Mahmoudi, AH; Pavier, MJ; Truman, CE; Smith, DJ

Abstract

Accurate measurement of residual stress is essential if account is to be taken of residual stress in structural integrity assessments. For thick components many non-destructive residual stress measurement techniques cannot be used since they are unable to measure the stresses deep within the component. Measurement techniques which involve mechanical strain relief through material removal are the only alternative. Recently it has been found that these techniques may fail to measure the stresses correctly when highly triaxial stresses are present because plastic redistribution can occur when the material removal is carried out. In the present investigation a modification of the Deep Hole Drilling (DHD) technique has been developed to deal with highly triaxial stress fields. The new technique was validated for the case of a quenched cylinder where the conventional DHD technique fails to measure the stresses correctly. The results of the simulation were compared with experimental measurements and a very good correlation was observed.

• Presentation Conference Type: Conference Paper (unpublished)
• Conference Name: Experimental Mechanics
• Start Date: Jun 3, 2007
• End Date: Jun 6, 2007
• Deposit Date: Sep 13, 2024
• Peer Reviewed: Peer Reviewed
• Public URL: https://uwe-repository.worktribe.com/output/12888717
• Related Public URLs: https://www.researchgate.net/publication/268430870_Accurate_measurement_of_highly_triaxial_residual_stresses