中国焊接(英文版)
中國銲接(英文版)
중국한접(영문판)
CHINA WELDING
2003年
1期
39-44
,共6页
徐文立%魏艳红%刘雪松%方洪渊%赵敏%田锡唐
徐文立%魏豔紅%劉雪鬆%方洪淵%趙敏%田錫唐
서문립%위염홍%류설송%방홍연%조민%전석당
tensile stress%welding with trailing peening%moiré analysis%joint strengthening
Using experimental mechanics method of moiré analysis, strain field distributions of 2024 aluminum alloy welded joints under different conditions were investigated. The results show that moiré stripes of welded joint without trailing peening just before fracture are not only few and scattered but also uneven, and the stress mainly concentrates on the poor position-welded toes during the tensioning process with the relatively poor mechanical properties of welded joints; When the method of welding with trailing peening is adopted, moiré stripes of welded joint just before fracture are relatively thick and even due to the strengthening welded toes during the welding process, and fracture position transfers from the welded toes to weld, at the same time the mechanical properties of welded joints are improved greatly than conventional welding which can show that the technology of trailing peening is effective to strengthen welded joints of aluminum alloy with high strength.
