| 声频法测定材料弹性模量的研究 |
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| 引用本文： | 吕红明,余卓平,李鹏飞,张英.声频法测定材料弹性模量的研究[J].工程塑料应用,2010,38(10). |
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| 作者姓名： | 吕红明 余卓平 李鹏飞 张英 |
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| 作者单位： | 同济大学汽车学院;盐城工学院车辆工程系; |
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| 基金项目： | 江苏省重点建设学科项目，江苏省大学生实践创新计划 |
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| 摘 要： | 针对悬臂粱结构,采用麦克风、声卡、计算机及Adobe Audition 3.0软件构成的非接触式声学测试分析系统,通过瞬态冲击使试件产生振动,经计算机声卡和信号处理软件测试声压信号,然后根据悬臂梁固有频率理论公式,计算得到尼龙棒的弹性模量,并进行了有限元逆分析验证.该系统具有结构简单、操作方便、价格低廉、测试精度高等优点.
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| 关 键 词： | 弹性模量 声频法 悬臂梁 测试 |
STUDY ON MEASUREMENT OF MATERIAL ELASTIC MODULE THROUGH ACOUSTIC-FRQUENCY METHOD |
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| Lü Hongming,Yu Zhuoping,Li Pengfei,Zhang Yin.STUDY ON MEASUREMENT OF MATERIAL ELASTIC MODULE THROUGH ACOUSTIC-FRQUENCY METHOD[J].Engineering Plastics Application,2010,38(10). |
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| Authors: | Lü Hongming Yu Zhuoping Li Pengfei Zhang Yin |
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| Affiliation: | Lü Hongming1,2,Yu Zhuoping1,Li Pengfei2,Zhang Yin2(1.School of Automotive Engineering of Tongji University,Shanghai 201804,China,2.Department of Vehicle Engineering,Yancheng Institute of Technology,Yancheng 224051,China) |
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| Abstract: | A elastic module measurement system composed of microphone,sound card,computer and Adobe Audition 3.0 is proposed for the cantilever beam. The beam vibration characteristics caused by the instantaneous impact are tested and analyzed by the measurement system. Then the elastic module of PA6 is computed according to the cantilever natural frequency formulas. The result is verified by finite element inverse analysis. The measurement system has the advantages of simple structure,easy operation,low cost and high... |
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| Keywords: | elastic module acoustic-frequency method cantilever beam measurement |
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