Thin-plate stress monitoring using S1-ZGV mode based on a PVDF comb transducer

IF 3.6 2区物理与天体物理 Q2 PHYSICS, APPLIED

Applied Physics Letters Pub Date : 2025-09-29 DOI:10.1063/5.0297746

Xiangdi Meng, Caibin Xu, Weibin Li, Shuai Guo, Jiaxiang Wang, Mingxi Deng

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引用次数: 0

Abstract

This Letter proposes an ultrasonic stress monitoring method utilizing the S1 zero group velocity (S1-ZGV) mode based on a PVDF comb transducer. Experimental investigations have revealed that under varying uniaxial stress conditions, both the measured S1-ZGV frequency and its corresponding amplitude exhibit appreciable variations. By adopting the relative change rate of the amplitude corresponding to the S1-ZGV frequency (denoted by RCA) as the characteristic parameter, it is evident that RCA demonstrates a monotonic and highly sensitive response to the applied uniaxial stress. Notably, RCA exhibits a significant increase as the applied uniaxial stress rises. This characteristic enables the use of RCA to predict the stress state, facilitating real-time stress monitoring. Experimental validation indicates that the predicted stress values align closely with the actual applied stress values, demonstrating a high level of accuracy in stress prediction. This method enables real-time and in situ monitoring of the stress state in thin plates subjected to uniaxial stresses, which holds paramount importance for a wide array of industrial applications in structural health monitoring.

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基于PVDF梳状传感器的S1-ZGV模式薄板应力监测

本文提出了一种基于PVDF梳状换能器的S1零群速度（S1- zgv）模式的超声应力监测方法。实验研究表明，在不同的单轴应力条件下，测量到的S1-ZGV频率和相应的振幅都有明显的变化。采用S1-ZGV频率对应的幅值相对变化率（用RCA表示）作为特征参数，可以看出RCA对施加的单轴应力表现出单调且高度敏感的响应。值得注意的是，RCA随着施加的单轴应力的增加而显著增加。这一特性使RCA能够预测应力状态，便于实时应力监测。实验验证表明，预测应力值与实际应用应力值吻合较好，表明应力预测具有较高的准确性。这种方法能够实时和原位监测受单轴应力作用的薄板的应力状态，这对于结构健康监测中的广泛工业应用具有至关重要的意义。

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

Applied Physics Letters 物理-物理：应用

CiteScore

6.40

自引率

10.00%

发文量

1821

审稿时长

1.6 months

期刊介绍： Applied Physics Letters (APL) features concise, up-to-date reports on significant new findings in applied physics. Emphasizing rapid dissemination of key data and new physical insights, APL offers prompt publication of new experimental and theoretical papers reporting applications of physics phenomena to all branches of science, engineering, and modern technology. In addition to regular articles, the journal also publishes invited Fast Track, Perspectives, and in-depth Editorials which report on cutting-edge areas in applied physics. APL Perspectives are forward-looking invited letters which highlight recent developments or discoveries. Emphasis is placed on very recent developments, potentially disruptive technologies, open questions and possible solutions. They also include a mini-roadmap detailing where the community should direct efforts in order for the phenomena to be viable for application and the challenges associated with meeting that performance threshold. Perspectives are characterized by personal viewpoints and opinions of recognized experts in the field. Fast Track articles are invited original research articles that report results that are particularly novel and important or provide a significant advancement in an emerging field. Because of the urgency and scientific importance of the work, the peer review process is accelerated. If, during the review process, it becomes apparent that the paper does not meet the Fast Track criterion, it is returned to a normal track.