Review of Progress in Quantitative Nondestructive Evaluation
Review of Progress in Quantitative Nondestructive Evaluation
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DOI：
10.1007/978-1-4684-5772-8_4
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发表时间：
1982
期刊：
影响因子：
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通讯作者：
D. Thompson;D. Chimenti
中科院分区：
文献类型：
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作者：
D. Thompson;D. Chimenti
这项工作是一项持续努力的一部分，目的是开发一种量化任意形状缺陷对超声波的散射的能力。将均匀各向同性缺陷在均匀各向同性全空间中的弹性动力学行为的一般问题转化为边界积分方程解。在低频或高频近似不合适的情况下，需要一个通用的散射模型来为探测概率(POD)模型和反演方案提供信息。以前，边界元法(BEM)是一种求解边界元问题的方法，适用于无损检测，并研究了孔洞问题[1]。在这里，我们将重点放在包含问题、实验验证和功能的整体扩展上。
This work is part of a continuing effort to develop a capability for quantifying the scattering of ultrasonic waves byarbitrarilyshaped flaws. The general problem of elastodynamic behavior of a homogeneous, isotropic defect in an otherwise homogeneous, isotropic fullspace is cast as a Boundary Integral Equation (BIE). A general scattering model is needed to provide information for probability of detection (POD) models and inversion schemes for cases when low or high frequency approximations are not appropriate. Previously the Boundary Element Method (BEM), a method for solving the BIE, was adapted to NDE and the void problem was investigated [1]. Here we focus on the inclusion problem, experimental verification, and to overall extensions of the capability.