黑色PDMS材料激光超声的有限元建模

2015 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications (SPAWDA) Pub Date : 2015-10-01 DOI:10.1109/SPAWDA.2015.7364502

Kun-lun Deng, Hong-lang Li, W. Luo, Yabing Ke, S. He

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引用次数: 0

摘要

炭黑复合PDMS是一种很有前途的激光超声检测材料，但其产生的超声场特性尚未得到研究。为了获得激光在高分子材料中产生的波场，采用热弹性模型，建立二维轴对称有限元模型，并根据超声波产生的实际情况设置物理和参数。计算了产生的声波模态和瞬态波场。得到了多模波场和超声的指向性和强度。理论计算结果表明，聚合物复合炭黑材料在无损检测领域具有广阔的应用前景。

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Finite element modeling of laser generated ultrasound in black PDMS materials

Carbon black combined PDMS is a promising material for laser ultrasonic inspection but the generated ultrasound field characteristics have not been studied. To obtain the wave field generated by laser in the polymer material, thermo-elasticity model was adopted, a 2D axial symmetry finite element model is built and the physics and parameters are set as actual situation for ultrasonic wave generation. The generated acoustic wave modes and the transient wave field are calculated. The multi-mode wave field and the directivity and intensity of generated ultrasonic are obtained. Theoretical calculation results show that the polymer combined carbon black material has a great prospect in nondestructive detecting applications.

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2015 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications (SPAWDA)

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