A novel cutting strategy for measuring two components of residual stresses using slitting method

Mahmoudi, A. H.; Sheikhpour, M. R.; Heydarian, S.

Abstract

An exact knowledge of residual stresses that exist within the engineering components is essential to maintain the structural integrity. All mechanical strain relief (MSR) techniques to measure residual stresses rely on removing a section of material that contains residual stresses. Therefore, these techniques are destructive as the integrity of the components is compromised. In slitting method, as a MSR technique, a slot with an increasing depth is introduced to the part incrementally that results in deformations. By measuring these deformations the residual stress component normal to the cut can be determined. Two orthogonal components of residual stresses were measured using the slitting method both experimentally and numerically. Different levels of residual stresses were induced into beam shaped specimens using quenching process at different temperatures. The experimental results were then compared with those numerically predicted. It was shown that while the first component of residual stress was being measured, its effect on the second direction that was normal to the first cut was inevitable. Finally, a new cutting configuration was proposed in which two components of residual stresses were measured simultaneously. The results of the proposed method indicated a good agreement with the conventional slitting.

• Journal Article Type: Article
• Acceptance Date: Apr 28, 2014
• Online Publication Date: May 7, 2014
• Publication Date: 2014-09
• Deposit Date: Sep 15, 2024
• Journal: Experimental Mechanics
• Print ISSN: 0014-4851
• Electronic ISSN: 1741-2765
• Publisher: Springer (part of Springer Nature)
• Peer Reviewed: Peer Reviewed
• Volume: 54
• Issue: 7
• Pages: 1237-1246
• DOI: https://doi.org/10.1007/s11340-014-9897-8
• Public URL: https://uwe-repository.worktribe.com/output/12889315