| 确定裂纹尖端形状及张开位移的焦散线—伪焦散线法实验研究 |
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| 引用本文： | 段自力. 确定裂纹尖端形状及张开位移的焦散线—伪焦散线法实验研究[J]. 实验力学, 1995, 10(2): 145-149 |
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| 作者姓名： | 段自力 |
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| 作者单位： | 华中理工大学 |
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| 摘 要： | 本文根据反射式焦散线－伪焦散线法和弹塑性断裂力学的基本原理，推导出裂纹尖端形状方程，为测量裂纹尖端的张开位移，提供一种全新的实验方法，本文还引用实例来进行验证．
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| 关 键 词： | 裂纹尖端 焦散线 伪焦散线法 裂纹张开位移 |
A New Method for Measuring Crack-tip Opening Displacement by Means of Caustics and Pseudocaustics |
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| Duan Zili. A New Method for Measuring Crack-tip Opening Displacement by Means of Caustics and Pseudocaustics[J]. Journal of Experimental Mechanics, 1995, 10(2): 145-149 |
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| Authors: | Duan Zili |
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| Affiliation: | Huazhong University of Science and Technology |
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| Abstract: | In this paper,three kinds of experimental method used to measure crack-tip opening displcement by means of caustics method are analysed.A new method is proposed to deterpoine the shape'of crack tip on the basis of caustics-pseudocaustics method and elasto plastic fracture mechanics.Experimental example is also presented. |
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| Keywords: | rack-tip opening displacement causitcs-pseudocaustics method. |
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