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非均匀介质体中缺陷响应初探

Preliminary Study on Flaw Response in Inhomogeneous Materia
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摘要 该文对非均匀介质固体中缺陷响应的研究,用多高斯光束(MGB)模型来表示入射超声波波束。在对缺陷响应的研究中,由于粗颗粒界面的散射作用,所以考虑到超声波在非均匀介质体中传播时的衰减以及相速度的频散特性。分析了不同尺寸的方形孔缺陷由于压电超声传感器距离其位置的不同对接收到回波信号的影响。 The objective of this paper is to predict the flaw response in an inhomogeneous solid medium.Multi-Gaussian Beam （MGB） model is used to represent the incident ultrasonic beam. The effect of ultrasonic attenuation and phase velocity dispersion due to grain scattering is included in the predictions.The variation of received voltage is analysed against the distance of the flaw from the transducer for different dimensions of a square cylinder void.
作者 郑礼全 郑钢丰
机构地区 安徽理工大学地球与环境学院 安徽理工大学材料科学与工程学院
出处 《压电与声光》 CSCD 北大核心 2009年第6期921-923,共3页 Piezoelectrics & Acoustooptics
基金 国家自然科学基金资助项目(10872001 50874112) 安徽理工大学博士启动基金资助项目(2009yb03)
关键词 无损检测 Born近似 弹性动力学 超声散射 nondestructive examination Born approximation dynamics ultrasonic scattering
分类号 TN78 [电子电信—电路与系统]
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参考文献10

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二级参考文献17

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共引文献16

压电与声光
2009年 第6期

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