Fatigue Life of Repaired Welded Tubular Joints
Publish Year: 1391
نوع سند: مقاله ژورنالی
زبان: English
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شناسه ملی سند علمی:
JR_IJE-26-1_008
تاریخ نمایه سازی: 17 خرداد 1393
Abstract:
The subject of this study is to investigate the effect of repair on the fatigue life of tubular joints. Six cracked specimens previously subjected to fatigue loading underwent weld repair. Two of these specimens were shot peened before primary fatigue loading. It is shown that repair for the original specimensincreases the fatigue life by roughly 150%. The increase of fatigue life for shot peened and repaired specimens is around 105%. The in-depth residual stresses are measured on the repaired joints before and after fatigue loading. It can be stated that repair made a remarkable improvement on the fatigue behaviorof tubular joints examined in this investigation. However, where repair is not possible, shot peening can bea good alternative to improve the fatigue life of welded joints. If repair is planned to be carried out then shot peening may not be financially or technically justifiable
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Authors
g.h farrahi
School of Mechanical Engineering, Sharif University of Technology, Tehran, Iran
g.h majzoobi
Department of Mechanical Engineering, Faculty of Engineering, Bu-Ali Sina University, Hamedan, Iran
a.h mahmoudi
Department of Mechanical Engineering, Faculty of Engineering, Bu-Ali Sina University, Hamedan, Iran
n habibi
Department of Mechanical Engineering, Faculty of Engineering, Bu-Ali Sina University, Hamedan, Iran