The incremental contour method using asymmetric stiffness cuts

Achouri, Anas; Hosseinzadeh, Foroogh; Bouchard, P. John; Paddea, Sanjooram and Muransky, Ondrej (2021). The incremental contour method using asymmetric stiffness cuts. Materials and Design, 197, article no. 109268.

DOI: https://doi.org/10.1016/j.matdes.2020.109268

Abstract

An incremental Contour Method (iCM) of residual stress measurement is proposed where residual stresses in the body of interest are sequentially reduced by successive contour cuts and the risk of stress re-distribution plastic- ity is mitigated or eliminated. The cutting-induced plasticity is known to cause significant inaccuracies when try- ing to measure the near-yield residual stresses using a conventional single cut contour method. The iCM procedure implements a new displacement data processing approach for the general case of sectioning at an ar- bitrary plane where the cut parts do not possess mirror-symmetric elastic stiffness. The basis for the new asymmetric stiffness data analysis approach is presented and the accuracy of the new method demonstrated using both numerical and experimental case studies.

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About

• Item ORO ID
• 74832
• Item Type
• Journal Item
• ISSN
• 0264-1275
• Project Funding Details

• Funded Project Name	Project ID	Funding Body
  Advances in the Contour Method of Residual Stress Measurement	Not Set	Rolls-Royce

• Keywords
• Residual; stress; measurement; asymmetric; multi-cut; plasticity; superposition
• Academic Unit or School
• Faculty of Science, Technology, Engineering and Mathematics (STEM) > Engineering and Innovation
  Faculty of Science, Technology, Engineering and Mathematics (STEM)
• Copyright Holders
• © 2020 Anas Achouri, © 2020 Foroogh Hosseinzadeh, © 2020 P. John Bouchard, © 2020 Sanjooram Paddea, © 2020 Ondrej Muransky
• Depositing User
• P. John Bouchard