Inverse ultrasonic determination of imperfect interfaces and bulk properties of a layer between two solids
Inverse ultrasonic determination of imperfect interfaces and bulk properties of a layer between two solids
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DOI：
10.1121/1.1600723
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发表时间：
2003-09-01
影响因子：
2.4
通讯作者：
Rokhlin, SI
中科院分区：
文献类型：
--
作者：
Baltazar, A;Wang, L;Rokhlin, SI
一套完整的物理，几何和界面特性的各向同性层嵌入两个已知的固体之间的确定方法进行了讨论。这些属性是：层的弹性模量、密度和厚度，以及层和基底之间的复杂的法向和横向界面刚度。的属性相结合的形式，八个无量纲参数，这是确定从实验反射光谱在两个入射角：正常和倾斜。同时确定体层属性和界面正常和横向弹簧的损失和稳定性的反演方法对数据分散的条件进行了讨论。通过对干机械接触条件下两个半空间之间的层和环境退化的粘接接头的法向和角向超声反射率的实验，验证了反演模型的有效性。层的属性进行了独立测量，显示出良好的一致性与重建的结果。(C)2003年，美国声学学会。
A method for determination of the complete set of physical, geometrical, and interfacial properties of an isotropic layer embedded between two known solids is discussed. These properties are: Lame elastic moduli, density and thickness of the layer, and complex normal and transverse interfacial stiffnesses between the layer and the substrates. The properties are combined in the form of eight nondimensional parameters, which are determined from experimental reflection spectra at two incident angles: normal and oblique. The conditions for simultaneous determination of bulk layer properties and the interface normal and transverse springs with losses and the stability of the inversion method against data scatter are addressed. The inversion model is validated by experiment on normal and angular ultrasonic reflectivity from a layer between two semispaces in dry mechanical contact and from an environmentally degraded adhesive joint. The layer properties were measured independently, showing good agreement with the reconstructed results. (C) 2003 Acoustical Society of America.