Theoretical analysis and experimental investigation on V-shape deformation by laser peening

Xingquan Zhang; Yongkang Zhang; Jianzhong Zhou; Yongyu Gu; Jufang Cheng

doi:10.1117/12.783112

14 November 2007 Theoretical analysis and experimental investigation on V-shape deformation by laser peening

Xingquan Zhang, Yongkang Zhang, Jianzhong Zhou, Yongyu Gu, Jufang Cheng

Proceedings Volume 6722, 3rd International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies; 672221 (2007) https://doi.org/10.1117/12.783112
Event: 3rd International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes, 2007, Chengdu, China

Abstract

Laser shot peening forming is a novel technique, which employes intense laser to induce residual stress distributed unevenly along the thickness to shape the metal plate. Theoretical analysis and experimental investigation reveal that laser peening forming is a mechanical, not a thermal process. The specimen was peened by laser along the centerline of the specimen, the shape of deformation of specimen is a bulge V-shape, that the plastic deformation centralizes on the narrow laser peening zone, and that other parts of specimen remain at original state but turn around the axis. The stress on both surfaces of deformed plate is compressive residual stress, which indicates that laser peening forming combines plastic deformation with surface improving treatment, and that the workpiece formed by laser peening has longer fatigue life.

Citation Download Citation

Xingquan Zhang, Yongkang Zhang, Jianzhong Zhou, Yongyu Gu, and Jufang Cheng "Theoretical analysis and experimental investigation on V-shape deformation by laser peening", Proc. SPIE 6722, 3rd International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies, 672221 (14 November 2007); https://doi.org/10.1117/12.783112

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