A Study on the Shot-Peening Effect for Fatigue Life Improvement of Laser Welding Material

J. Ocean Eng. Technol. 2010;24(2):57-61.

Rong HuaWei,Lee Hyun-Jun,Jung Hae-Young,Hur Sun-Chel,Park Won-Jo

Department of Mechanical and Precision Engineering Graduate School Gyeongsang Nat'l. Univ.,Department of Mechanical and Precision Engineering Graduate School Gyeongsang Nat'l. Univ.,Employee of the Doowon Heavy Industrial Company Research Principal

레이저 용접재의 피로수명 향상을 위한 쇼트피닝 영향에 관한 연구

이현준,정해용,허선철,박원조

경상대학교 정밀기계공학과 대학원,경상대학교 정밀기계공학과 대학원,두원중공업(주),경상대학교 정밀기계공학과 해양산업연구소,경상대학교 정밀기계공학과 해양산업연구소

Keywords: Laser welding, Shot-peening, Fatigue life, Residual stress

핵심용어: 레이저 용접, 쇼트피닝, 피로수명, 잔류응력

Abstract

At present, welding technology is not only emphasized in the development of manufacturing technology but its application is also expanding. In these systems, attempts have been made to use SUS as a high-temperature material for special applications, and in improvements in manufacturing technologies bear watching, together with an increase in the use rate. Specifically, three-dimensional wings are often used for fasteners with the purpose of decreasing the weight (