Low-Power Fully Acoustic Non-Destructive Testing of Glass Fiber-Reinforced Composite Plate Utilizing Local Defect Resonance

IF 0.7 4区材料科学 Q4 MATERIALS SCIENCE, CHARACTERIZATION & TESTING

Strength of Materials Pub Date : 2024-02-29 DOI:10.1007/s11223-024-00613-z

N. S. V. N. Hanuman, T. Bose

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Abstract

In this paper, a low power fully acoustic non-destructive testing (NDT) of glass fiber reinforced composite plate has been presented. Input acoustic power in microwatt range has been used for local defect resonance (LDR) based delamination activation. Both numerical and experimental results are compared here. Numerical simulation has been carried out in ABAQUS platform. An oblique incident wave interaction with 3D composite plate has been created and the sound radiation pattern over the plate has been studied with an air layer over the plate. In experiment, the sound has been generated by a piezo-speaker and a MEMS microphone has been used for reception over the plate. Moreover, a laser Doppler vibrometer has been used for LDR frequency and corresponding mode shape validation. Frequency spectrum, mode shape at LDR frequency, best wave impinging angle, efficiency and sound directivity patterns are studied. θ, ϕ = 10°, 30° has been found to the best direction for sonic excitation. Moreover, fully acoustic system is found to be more efficient than partial acoustic system, i.e., contacts excitation. This method can be used for inspection of large structures due to long distance non-contact excitation.

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利用局部缺陷共振对玻璃纤维增强复合板进行低功耗全声学无损检测

本文介绍了玻璃纤维增强复合板的低功率全声学无损检测（NDT）。输入声功率在微瓦范围内，用于基于局部缺陷共振（LDR）的分层激活。这里对数值结果和实验结果进行了比较。数值模拟是在 ABAQUS 平台上进行的。创建了斜入射波与三维复合板的相互作用，并研究了板上空气层的声辐射模式。在实验中，声音由压电扬声器产生，MEMS 麦克风用于接收板上的声音。此外，还使用激光多普勒测振仪对 LDR 频率和相应的模态进行验证。θ、ϕ = 10°、30° 是声波激励的最佳方向。此外，还发现全声学系统比部分声学系统（即触点激励）更有效。由于长距离非接触式激励，这种方法可用于检测大型结构。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Strength of Materials MATERIALS SCIENCE, CHARACTERIZATION & TESTING-

CiteScore

1.20

自引率

14.30%

发文量

审稿时长

6-12 weeks

期刊介绍： Strength of Materials focuses on the strength of materials and structural components subjected to different types of force and thermal loadings, the limiting strength criteria of structures, and the theory of strength of structures. Consideration is given to actual operating conditions, problems of crack resistance and theories of failure, the theory of oscillations of real mechanical systems, and calculations of the stress-strain state of structural components.