| 激光超声系统的定标 |
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| 引用本文： | 李宜德,杜英磊,吴柏枚. 激光超声系统的定标[J]. 安徽大学学报(自然科学版), 2005, 29(6): 57-60 |
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| 作者姓名： | 李宜德 杜英磊 吴柏枚 |
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| 作者单位： | 安徽大学,物理与材料科学学院,安徽,合肥,230039;中国科学技术大学,理学院,安徽,合肥,230026 |
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| 摘 要： | 介绍激光超声的发展概况、物理机理、应用、接收以及实验的装置和所用的超声探头的设计;用铜和铝作为系统定标的材料,测定了超声纵波的声速;对所得结果进行了分析讨论.发现用激光超声测定声速的时候,对于特定的材料,一定的厚度和合适的光斑大小对于减小实验误差是非常重要的.
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| 关 键 词： | 激光超声 定标 光斑 |
| 文章编号： | 1000-2162（2005）06-0057-04 |
| 收稿时间： | 2005-03-05 |
| 修稿时间： | 2005-03-05 |
The calibration of laser ultrasonic system |
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| LI Yi-de,DU Ying-lei,WU Bai-mei. The calibration of laser ultrasonic system[J]. Journal of Anhui University(Natural Sciences), 2005, 29(6): 57-60 |
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| Authors: | LI Yi-de DU Ying-lei WU Bai-mei |
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| Affiliation: | 1. School of Physics and Material Science, Anhui University, Hefei 230039,China; 2. Department of Astronomy and Applied Physics, University of Science and Technology of China, Hefei 230026,China |
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| Abstract: | The outline, mechanism, application, reception of laser ultrasonic, as well as the equipment and the design of our ultrasonic transducer, are introduced. By the use of Cu and M, the materials of calibration, we measured the velocity of ultrasonic wave and analyzed the results. As for certain material, we found that corresponding thickness and proper dimension of spot were necessary for accurately determining ultrasonic velocity. |
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| Keywords: | laser ultrasonic calibration spot |
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