| 基于超声波干涉的峰谷法计算声速值及实验误差探讨 |
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| 引用本文： | 张正康,周天赐,韩杰克,陈水桥.基于超声波干涉的峰谷法计算声速值及实验误差探讨[J].物理实验,2011,31(4):42-45. |
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| 作者姓名： | 张正康 周天赐 韩杰克 陈水桥 |
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| 作者单位： | 1. 浙江大学,求是学院,浙江,杭州,310027
2. 浙江大学,物理学系,浙江,杭州,310027 |
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| 基金项目： | 浙江大学实验教学研究项目 |
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| 摘 要： | 介绍了基于Cassy Lab软件下的超声波干涉实验,提出了利用超声波干涉现象测量声速的方法.根据干涉理论推导了峰谷法测量声速的计算公式.分析和探讨了峰谷法计算声速的误差来源和改进方法.
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| 关 键 词： | 超声波干涉 峰谷法 声速 Cassy Lab |
Calculation of acoustic velocity and error discussion by peak-valley method in ultrasonic wave interference experiment |
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| ZHANG Zheng-kang,ZHOU Tian-ci,HAN Jie-ke,CHEN Shui-qiao.Calculation of acoustic velocity and error discussion by peak-valley method in ultrasonic wave interference experiment[J].Physics Experimentation,2011,31(4):42-45. |
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| Authors: | ZHANG Zheng-kang ZHOU Tian-ci HAN Jie-ke CHEN Shui-qiao |
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| Institution: | ZHANG Zheng-kanga,ZHOU Tian-cia,HAN Jie-kea,CHEN Shui-qiaob(a.Qiushi College,b.Department of Physics,Zhejiang University,Hangzhou 310027,China) |
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| Abstract: | The experiment of ultrasonic wave interference based on Cassy Lab software was introduced,as well as the method of measuring the acoustic velocity was exhibited through the interference phenomenon.A formula for calculating the acoustic velocity was derived on the basis of the peak-valley method of interference.In addition,the error sources and improvement methods of the experiment were analyzed. |
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| Keywords: | ultrasonic wave interference peak-valley method acoustic velocity Cassy Lab |
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