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Investigation Of Residual Stress Field In The Curved Surface Of Round Rod Subjected To Multiple Laser Shock Peening

Author

Listed:
  • XINGQUAN ZHANG

    (AnHui Province Key Laboratory of Special Heavy Load Robot, School of Mechanical Engineering, Anhui University of Technology, Ma’anshan, Anhui 243002, P. R. China)

  • WENWU NIU

    (AnHui Province Key Laboratory of Special Heavy Load Robot, School of Mechanical Engineering, Anhui University of Technology, Ma’anshan, Anhui 243002, P. R. China)

  • YUANDE YIN

    (AnHui Province Key Laboratory of Special Heavy Load Robot, School of Mechanical Engineering, Anhui University of Technology, Ma’anshan, Anhui 243002, P. R. China)

  • JINXIU FANG

    (AnHui Province Key Laboratory of Special Heavy Load Robot, School of Mechanical Engineering, Anhui University of Technology, Ma’anshan, Anhui 243002, P. R. China)

  • SYED SOHAIL AHMAD SHAH

    (AnHui Province Key Laboratory of Special Heavy Load Robot, School of Mechanical Engineering, Anhui University of Technology, Ma’anshan, Anhui 243002, P. R. China)

  • YUANCHAO YU

    (AnHui Province Key Laboratory of Special Heavy Load Robot, School of Mechanical Engineering, Anhui University of Technology, Ma’anshan, Anhui 243002, P. R. China)

Abstract

Laser shock peening (LSP) was employed to squeeze compressive residual stress (CRS) into the curved surface of the round rod with diameter of 16mm. The residual stress field was induced by nine laser shots irradiating at different locations along the specified path. The developing process of the residual stress field was investigated with finite element analysis, and the corresponding experiments were also carried out to validate the calculated results. Results demonstrate that multiple LSP with 50% overlapping rate can result in residual stress field with the maximum CRS varying from 155.2MPa to 198.8MPa along the direction of the rod axis. The peened surface appears wavy in shape and the maximum depth of plastic deformation in the curved surface is 13.41μm. The value of surface roughness increases from 3.87μm to 4.65μm.

Suggested Citation

  • Xingquan Zhang & Wenwu Niu & Yuande Yin & Jinxiu Fang & Syed Sohail Ahmad Shah & Yuanchao Yu, 2021. "Investigation Of Residual Stress Field In The Curved Surface Of Round Rod Subjected To Multiple Laser Shock Peening," Surface Review and Letters (SRL), World Scientific Publishing Co. Pte. Ltd., vol. 28(05), pages 1-11, May.
    • Handle: RePEc:wsi:srlxxx:v:28:y:2021:i:05:n:s0218625x21500293
    DOI: 10.1142/S0218625X21500293
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