声波的时间逆向建模，用于增强纺织品加固混凝土裂缝声事件的绘图能力

IF 2.6 3区材料科学 Q2 MATERIALS SCIENCE, CHARACTERIZATION & TESTING

Journal of Nondestructive Evaluation Pub Date : 2024-08-26 DOI:10.1007/s10921-024-01110-8

Georg Karl Kocur, Bernd Markert

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引用次数: 0

摘要

时间反向建模（TRM）被成功应用于来自圆形传声器阵列的声学信号，用于绘制突然开裂的声音事件。在使用合成声源进行数值可行性研究后，又对钢板上的钢摆锤撞击进行了实验研究。使用延迟和波束成形技术对数值和实验数据的映射结果进行了比较和验证。根据可行性和实验研究，估算出了映射误差。在主要的实验研究中，使用 TRM 对纺织品加固混凝土试样进行拉伸试验时获得的开裂声事件进行了映射。结果表明，TRM 在绘制沿裂缝路径同时发生的裂缝声事件方面具有更强的能力。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Time Reverse Modeling of Acoustic Waves for Enhanced Mapping of Cracking Sound Events in Textile Reinforced Concrete

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Time Reverse Modeling of Acoustic Waves for Enhanced Mapping of Cracking Sound Events in Textile Reinforced Concrete

Time reverse modeling (TRM) is successfully applied to acoustic signals from a circular microphone array, for mapping of sudden cracking sound events. Numerical feasibility using synthetic acoustic sources followed by an experimental study with steel pendulum impacts on a steel plate is carried out. The mapping results from the numerical and experimental data are compared and verified using a delay-and-sum beamforming technique. Based on the feasibility and experimental study, a mapping error is estimated. In the main experimental study, cracking sound events obtained during a tensile test on a textile-reinforced concrete specimen are mapped with the TRM. The enhanced capability of the TRM to map simultaneously occurring cracking sound events along crack paths is demonstrated.

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来源期刊

Journal of Nondestructive Evaluation 工程技术-材料科学：表征与测试

CiteScore

4.90

自引率

7.10%

发文量

审稿时长

9 months

期刊介绍： Journal of Nondestructive Evaluation provides a forum for the broad range of scientific and engineering activities involved in developing a quantitative nondestructive evaluation (NDE) capability. This interdisciplinary journal publishes papers on the development of new equipment, analyses, and approaches to nondestructive measurements.