Stability of residual stress induced by laser peening under cyclic mechanical loading

Yuji Sano (Power and Industrial Systems Research and Development Center, Toshiba Corporation, Yokohama, Japan)
Koichi Akita (Department of Mechanical Systems Engineering, Tokyo City University, Tokyo, Japan)
Kazuya Takeda (Tokyo City University, Tokyo, Japan)
Rie Sumiya (Power and Industrial Systems Research and Development Center, Toshiba Corporation, Yokohama, Japan)
and
Toshiyuki Tazawa (Power and Industrial Systems Research and Development Center, Toshiba Corporation, Yokohama, Japan)
Toshiyuki Saito (Mechanical Technology & Design Department, Toshiba Corporation, Yokohama, Japan)
Chihiro Narazaki (Mechanical Technology & Design Department, Toshiba Corporation, Yokohama, Japan)

International Journal of Structural Integrity

ISSN: 1757-9864

Publication date: 8 March 2011

Abstract

Purpose

The purpose of this paper is to investigate the behavior of compressive residual stress induced by laser peening under external loading on an age‐hardened high‐strength aluminum alloy A2024‐T3, a low‐carbon austenitic stainless steel SUS316L (Type 316L) and a nickel‐based alloy NCF600 (Alloy 600).

Design/methodology/approach

The surface residual stress was measured intermittently by X‐ray diffraction during cyclic uniaxial loading.

Findings

The compressive residual stress due to laser peening significantly decreased during the first few cycles at stress ratio of 0.1 with the maximum loading stress exceeding the 0.2 per cent yield stress. No remarkable decrease was observed afterward until the end of the loading cycles.

Originality/value

Under symmetric loading at the stress ratio of −1 to A2024‐T3, a major decrease took place in the compression side of the first loading cycle. The surface residual stresses remained in compression within all the extent of the present experiments, even if the maximum loading stress exceeded the yield stress of the materials.

Keywords

Citation

Sano, Y., Akita, K., Takeda, K., Sumiya, R., Tazawa, T., Saito, T. and Narazaki, C. (2011), "Stability of residual stress induced by laser peening under cyclic mechanical loading", International Journal of Structural Integrity, Vol. 2 No. 1, pp. 42-50. https://doi.org/10.1108/17579861111108608

Download as .RIS

Publisher

:

Emerald Group Publishing Limited

Copyright © 2011, Emerald Group Publishing Limited

Please note you might not have access to this content

You may be able to access this content by login via Shibboleth, Open Athens or with your Emerald account.
If you would like to contact us about accessing this content, click the button and fill out the form.
To rent this content from Deepdyve, please click the button.