| 921A钢焊接接头在腐蚀疲劳下表面裂纹扩展规律 |
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| 引用本文： | 张祖枢,晏思聪.921A钢焊接接头在腐蚀疲劳下表面裂纹扩展规律[J].华中科技大学学报(自然科学版),1992(6). |
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| 作者姓名： | 张祖枢 晏思聪 |
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| 作者单位： | 华中理工大学船舶和海洋工程系
(张祖枢),华中理工大学船舶和海洋工程系(晏思聪) |
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| 基金项目： | 国家自然科学基金资助项目 |
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| 摘 要： | 本文对921A钢焊接接头在海水腐蚀环境下受弯曲疲劳载菏作用时表面裂纹扩展规律进行了试验研究.试探了表面半椭圆裂纹的预制方法和在腐蚀环境中的疲劳刻痕技术;拟合了表面裂纹扩展的形状函数a=f(c)和裂纹扩展速率;得出表面裂纹长度与深度之间的关系.
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| 关 键 词： | 焊接接头 腐蚀疲劳 表面裂纹 扩展规律 |
The Propagation of Surface Cracks in Welded Connections Made of Type "921A" Steel in a Corrosive Fatigue |
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| Zhang Zushu Yan Sicong.The Propagation of Surface Cracks in Welded Connections Made of Type "921A" Steel in a Corrosive Fatigue[J].JOURNAL OF HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY.NATURE SCIENCE,1992(6). |
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| Authors: | Zhang Zushu Yan Sicong |
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| Institution: | Zhang Zushu Yan Sicong |
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| Abstract: | The propagation of surface cracks in welded connections made of type "921A" steel has been investigated experimentally under bending fatigue load and in the corrosive environment of seawater. The method of prefabricating surface semi-elliptic cracks and the technique of fatigue trace carving in a corrosive environment have been tackled. The shape function of surface crack propagation and a formula for its rate of propagation are proposed. The relationship verified by test between the length and depth of surface cracks has been obtained. |
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| Keywords: | welded connection corrosive fatigue surface crack crack propagation |
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