| 摘要: |
| 以天然气输送管道和桥梁为典型构造,对其对接接头进行疲劳裂纹扩展速率的实测,并按国内外标准进行断裂寿命估算,绘测出应力幅与寿命的关系曲线,从而给出了焊接结构寿命估算的完整方法。 |
| 关键词: 断裂 疲劳裂纹扩展速率 标准 寿命 |
| DOI： |
| 分类号: |
| 基金项目: |
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| Experiment and study on estimation of fracture life of welded structures |
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Zhang Baochang1, Bai Fupin1, Jiao Wei1, Meng Fanrong2
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1.Harbin Research Institute of Welding;2.Heilongjiang Investigation and Design Institute for Water Resources
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| Abstract: |
| The fatigue crack propagation rates of butt welded joints have been actually measured with using natural gas pipeline and bridge as the typical structures.The fracture life have been estimated according to the standards both domestic and abroad,and a curve of stress amplitude vs.life was obtained.A complete method for estimation of service life of welded structure is given in this paper. |
| Key words: fracture propagation rate of fatigue crack standard service life |
