| 几何不对称试件启裂前应力变化的激光实验研究 |
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| 引用本文： | 郎福元,周爱细,黄建龙.几何不对称试件启裂前应力变化的激光实验研究[J].兰州理工大学学报,2001,27(3):107-109. |
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| 作者姓名： | 郎福元 周爱细 黄建龙 |
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| 作者单位： | 甘肃工业大学机电工程学院, |
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| 基金项目： | 甘肃省科技攻关项目 ( 85 6 1 0 4) |
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| 摘 要： | 从裂纹技术的需要出发 ,对几何不对称试件进行了启裂前应力状态变化的激光实验力学研究 ,观察有切口试件的应力场变化情况 .结果表明 ,试件在启裂前的应力状态基本上是对称的 ,应力无大的变化 .
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| 关 键 词： | 裂纹技术 规则断裂 激光散斑法 切口 应力变化 |
| 文章编号： | 1000-5889(2001)03-0107-03 |
| 修稿时间： | 2000年11月23 |
Laser-experimental investigation of stress variation within geometrically unsymmetric samples before cracked |
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| LANG Fu yuan,ZHOU Ai xi,HUANG Jian long.Laser-experimental investigation of stress variation within geometrically unsymmetric samples before cracked[J].Journal of Lanzhou University of Technology,2001,27(3):107-109. |
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| Authors: | LANG Fu yuan ZHOU Ai xi HUANG Jian long |
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| Abstract: | Considering the requirement of crack technique, the stress condition of geometrically unsymmetric samples before crack initiation os investigated by means of experimental mechanics with laser in order to observe the variation of stress field of notched samples. The result shows that the stress condition within the samples after load applying and crack initiating is basically symmetric without large variation of stress. |
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| Keywords: | crack technique regular fracture laser speckle method V notch stress variation |
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