多颗粒增强复合材料中超声波传播的实验与模拟。

Experiment and simulation for ultrasonic wave propagation in multiple-particle reinforced composites.

机构信息

State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, People's Republic of China.

出版信息

Ultrasonics. 2023 Jul;132:106971. doi: 10.1016/j.ultras.2023.106971. Epub 2023 Feb 27.

DOI:10.1016/j.ultras.2023.106971

PMID:36870124

Abstract

The study of ultrasonic wave propagation is a crucial foundation for the application of ultrasonic testing in particle-reinforced composites. However, in the presence of the complex interaction among multiple particles, the wave characteristics are difficult to be analyzed and used for parametric inversion. Here we combine the finite element analysis and experimental measurement to investigate the ultrasonic wave propagation in Cu-W/SiC particle-reinforced composites. The experimental and simulation results are in good agreement and quantitatively correlate longitudinal wave velocity and attenuation coefficient with SiC content and ultrasonic frequency. The results show that the attenuation coefficient of ternary composites (Cu-W/SiC) is significantly larger than that of binary composites (Cu-W, Cu-SiC). This is explained by numerical simulation analysis via extracting the individual attenuation components and visualizing the interaction among multiple particles in a model of energy propagation. The interaction among particles competes with the particle independent scattering in particle-reinforced composites. SiC particles serve as energy transfer channels partially compensating for the loss of scattering attenuation caused by interaction among W particles, which further blocks the transmission of incident energy. The present work provides insight into the theoretical basis for ultrasonic testing in multiple-particle reinforced composites.

摘要

超声波传播的研究是超声检测在颗粒增强复合材料中应用的重要基础。然而，在多种颗粒复杂相互作用的情况下，很难分析和利用波特性进行参数反演。在这里，我们结合有限元分析和实验测量研究了 Cu-W/SiC 颗粒增强复合材料中的超声波传播。实验和模拟结果吻合较好，定量关联了纵波波速和衰减系数与 SiC 含量和超声波频率的关系。结果表明，三元复合材料（Cu-W/SiC）的衰减系数明显大于二元复合材料（Cu-W、Cu-SiC）。通过数值模拟分析提取各向异性衰减分量，并可视化模型中能量传播过程中的多颗粒相互作用，对这一现象进行了解释。颗粒间的相互作用与颗粒增强复合材料中颗粒独立散射竞争。SiC 颗粒作为能量传递通道，部分补偿了由于 W 颗粒间相互作用导致的散射衰减损失，从而进一步阻碍了入射能量的传输。本工作为多颗粒增强复合材料超声检测提供了理论基础。