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

Rong, HuaWei (Department of Mechanical and Precision Engineering, Graduate School, Gyeongsang Nat'l. Univ.)
Lee, Hyun-Jun (Department of Mechanical and Precision Engineering, Graduate School, Gyeongsang Nat'l. Univ.)
Jung, Hae-Young (Employee of the Doowon Heavy Industrial Company, Research, Principal Researcher to make Aircraft Structure)
Hur, Sun-Chel (Department of Mechanical and Precision Engineering, Institute of Marine Industry, Gyeongsang Nat'l. Univ.)
Park, Won-Jo (Department of Mechanical and Precision Engineering, Institute of Marine Industry, Gyeongsang Nat'l. Univ.)
Publication Information
Journal of Ocean Engineering and Technology / v.24, no.2, 2010 , pp. 57-61 More about this Journal
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 (정해용, 2007). However, due to developments in welding technology, there has been a recent tendency to replace existing assembly methods with welding. Specifically, if laser welding techniques are applied, the heat-affected zone can be minimized compared toother welding techniques. However, in the case of these special welding techniques, there is an increase in residual stress, which fatally affects the fatigue life. In order to remove the residual stress and its effect on fatigue life, shot-peening is executed. The intention of this study was to obtain the optimal conditions for shot-peening.
Keywords
Laser welding; Shot-peening; Fatigue life; Residual stress;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
연도 인용수 순위
1 정해용 (2007). ”유도 무기 날개의 레이저 용접기술”, 한국 군사과학 기술 학회지, 제10권, 제3호, pp 109-113.   과학기술학회마을
2 Torres, M.A.S. and Voorwald, H.J.C. (2002). ”An Evaluation of Shot Peening Residual Stress and Stress Relaxation on the Fatigue Life of AISI 4340 Steel”, International Journal of Fatigue, Vol 24, pp 877-886.   DOI   ScienceOn
3 Park, W.J., Huh, S.C., Jeong, H.Y. and Yang, H.S. (2006). ”Numerical and Experimental Evaluation on the Residual Stresses of Welded Joints”, International Journal of Modern Physics B, Vol 20, No 25, 26 & 27, pp 4451-4456.   DOI   ScienceOn
4 Jung, W.S., Lee, B.W., Kim, S.H., Choi, Y., Lee, Y.H., Kim, K.H. and Kwon, D.I. (2005). “Mechanical Behavior; Non-Destructive Evaluation of Residual Stress in Welded Partial Zone Using Continuous Indentation Test”, Journal of the Korean Institute of Metals and Materials, Vol 43, No 7, pp 469-474.   과학기술학회마을
5 안석환, 최문오, 김성광, 손창석, 남기우 (2007). “용접열사이클 재현에 의한 SS400강 및 STS304강의 특성 평가 - 제2보: 부식특성”, 한국해양공학회지, 제21권, 제5호, pp 33-38   과학기술학회마을
6 이세환, 김종성, 진태은 (2004). “기계적 이완 방법에 의한 용접부의 잔류응력 재분포”, 대한용접학회지, 제22권, 제2호, pp 149-156.
7 이환우, 박영수 (2004). ”항공기 구조용 재료의 쇼트피닝에 의한 압축 잔류응력 분포 특성“, 한국정밀공학회지, 제21권, 제5 호, pp 149-157.   과학기술학회마을