Fatigue Properties of Spot Welded and Spot Weld-Bonded Joints of Steel Sheet

被引：13

作者：

Fujii, Tomoyuki ^{[1
]}

Tohgo, Keiichiro ^{[1
]}

Suzuki, Yukinori ^{[2
]}

Yamamoto, Takahiro ^{[3
,4
]}

Shimamura, Yoshinobu ^{[1
]}

Ojima, Yoshifumi

机构：

[1] Shizuoka Univ, Dept Mech Engn, Naka Ku, 3-5-1 Johoku, Hamamatsu, Shizuoka 4328561, Japan

[2] Shizuoka Univ, Grad Sch, Naka Ku, 3-5-1 Johoku, Hamamatsu, Shizuoka 4328561, Japan

[3] Nisshinbo Holdings Inc, Chuou Ku, Tokyo 1038650, Japan

[4] Mitsubishi Motors Corp, Mat Engn Dept, Okazaki, Aichi 4440908, Japan

来源：

11TH INTERNATIONAL CONFERENCE ON THE MECHANICAL BEHAVIOR OF MATERIALS (ICM11) | 2011年 / 10卷

关键词：

Spot welded joints; Spot weld-bonded joints; Ultra-high strength steels; Fatigue strength; Fracture behavior; Fracture mechanics;

D O I：

10.1016/j.proeng.2011.04.177

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this paper, fatigue tests are carried out on spot welded and spot weld-bonded joints of mild steel and ultra-high strength steel plates. The fatigue strength of the spot weld-bonded joints is higher than that of the spot welded joints. On the spot weld-bonded specimens, the strain distribution around the bonded area during fatigue tests is measured by using strain gauges to investigate the interfacial debonding behavior of adhesive bonding. According to the strain distribution measurement, the debonding initiates from the edge of the adhesive bonding, and propagates to the spot weld nugget. The fatigue strength is improved because the stress concentration of the nugget edge is considerably reduced in large part of fatigue life. (C) 2011 Published by Elsevier Ltd. Selection and peer-review under responsibility of ICM11

引用

页码：1075 / 1080

页数：6

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