文档介绍：毕业设计(论文)
题目: 碳化硅陶瓷材料的声学特性研究
系别: 测控技术与仪器
专业名称: 测控技术与仪器
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二O一三年六月
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碳化硅陶瓷材料的声学特性研究
摘要:陶瓷材料在耐高温、强度高、熔点高、热稳定性好、价格低廉等方面都表现出优异的性能,尤其在对材料耐磨性、耐腐蚀性、耐高温性有更高要求的今天,,,无损检测在陶瓷材料的检验工作中变得越来越重要.
首先从陶瓷材料的声学特性入手,用底波法测量陶瓷材料的纵波声速,再用掠入射与波形转换两种方法测量横波声速,其次用表面波探头测量了表面波声速,然后测量了陶瓷材料的声衰减,最后在人工缺陷板上,用合适的探头和方法检测出了所有缺陷.
本课题研究得出了陶瓷材料的纵波,横波,表面波的声速以及其衰减特性,并在人工缺陷板上测出缺陷,从而得出陶瓷材料声学检测实践的启发和理论依据.
关键词:碳化硅陶瓷材料,声学特性,超声检测
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The acoustic characteristics of silicon carbide ceramic material
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Abstract : Ceramic materials in high temperature, high strength, high melting point, good thermal stability, low cost and other aspects have shown excellent performance, especially people have higher expectations in the material wear resistance, corrosion resistance, heat resistance today, ceramics have broader space for can be said that modern life is inseparable from the progress of ceramic, what ceramic has brought to mankind is the ever-changing the development of non-destructive testing technology, non-destructive testing inspection of ceramic materials is ing increasingly important.
First,beginning with the acoustic properties of ceramic materials,we use the end of wave to measure longitudinal wave velocity of ceramic material, and we use then glancing incidence and waveform into two kinds of methods to measure shear wave velocity, followed by measurement of the surface wave velocity by wave probe, and then we measure the ceramic material the sound attenuation, and finally artificial defect board, with