| 含裂纹的受力试件对超声波传播路径的影响 |
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| 引用本文： | 张忠平,孙中禹,孙强.含裂纹的受力试件对超声波传播路径的影响[J].力学与实践,2000,22(2):26-29. |
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| 作者姓名： | 张忠平 孙中禹 孙强 |
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| 作者单位： | 空军工程大学,西安,710038 |
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| 摘 要： | 本从弹性理论及断裂力学理论出发，通过含裂纹试件受力前后形状及折射率的变化，研究了超声波试件受力试件后传播路径的变化，并与光波的变化进行了比较，得到含裂纹的受力试件对于光波来说相当于一“凹”透镜的作用，而对于超声波来说却相当于“凸”透镜的结论。
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| 关 键 词： | 裂纹 受力试件 超声波 焦散线法 传播路径 |
EFFECTS OF A LOADED SPECIMEN WITH CRACK ON THETRAVELLING PATHS OF ULTRASONIC WAVES |
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| ZHANG Zhongping,SUN Zhongyu,SUN Qiang.EFFECTS OF A LOADED SPECIMEN WITH CRACK ON THETRAVELLING PATHS OF ULTRASONIC WAVES[J].Mechanics and Engineering,2000,22(2):26-29. |
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| Authors: | ZHANG Zhongping SUN Zhongyu SUN Qiang |
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| Abstract: | Based the theory of elasticity and that of fracture mechanics, the effect of a loaded specimen with crack on the travelling path of ultrasonic wave is studied. By comparing the result of light and ultrasonic waves, it is found that a loaded specimen with crack can be considered as a concave lens (mirror) for light wave and as a convex lens (mirror) for ultrasonic wave. |
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| Keywords: | loaded specimen with crack ultrasonic wave travelling path |
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