Numerical and experimental investigation on debonding detection in honeycomb sandwich using air-coupled local defect resonance and coda wave analysis

IF 3.8 2区物理与天体物理 Q1 ACOUSTICS

Ultrasonics Pub Date : 2024-08-27 DOI:10.1016/j.ultras.2024.107440

Zhiqiang Li , Jingpin Jiao , Li Li , Cunfu He , Bin Wu

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引用次数: 0

Abstract

Non-contact ultrasonic testing of debonding in honeycomb sandwich structure has been a major challenge in industry. In this study, the air-coupled local defect resonance (LDR) technique with coda wave analysis is proposed for nondestructive testing (NDT) of debonding in honeycomb sandwich structure. Numerical simulations have been conducted to visualize the LDR behavior of debonding in honeycomb sandwich structure by air-coupled excitations, and a decorrelation analysis method is proposed for determining the interval of coda wave from received signals. Results indicate that the start moment of coda wave should be determined as the time corresponding to decorrelation coefficient exceed to 0.2 and the duration is 2.5 ms. Air-coupled LDR scanning experiments were conducted on the honeycomb sandwich specimens with different deboning. Experimental results indicate that the proposed technique is effective for NDT of the debonding in honeycomb sandwich structures. The research provides an efficiency non-contact ultrasonic NDT method for honeycomb sandwich structure.

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利用空气耦合局部缺陷共振和尾波分析对蜂窝夹层脱胶检测的数值和实验研究

蜂窝夹层结构脱胶的非接触超声波检测一直是工业领域的一大难题。本研究提出了空气耦合局部缺陷共振（LDR）技术和尾波分析方法，用于蜂窝夹层结构脱胶的无损检测（NDT）。通过空气耦合激励对蜂窝夹层结构脱粘的 LDR 行为进行了可视化数值模拟，并提出了从接收信号中确定尾波间隔的相关分析方法。结果表明，当相关系数超过 0.2 且持续时间为 2.5 毫秒时，应确定尾波的起始时刻。对不同去骨的蜂窝夹层试样进行了空气耦合 LDR 扫描实验。实验结果表明，所提出的技术能有效地对蜂窝夹层结构中的脱胶现象进行无损检测。该研究为蜂窝夹层结构提供了一种高效的非接触超声无损检测方法。

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

Ultrasonics 医学-核医学

CiteScore

7.60

自引率

19.00%

发文量

186

审稿时长

3.9 months

期刊介绍： Ultrasonics is the only internationally established journal which covers the entire field of ultrasound research and technology and all its many applications. Ultrasonics contains a variety of sections to keep readers fully informed and up-to-date on the whole spectrum of research and development throughout the world. Ultrasonics publishes papers of exceptional quality and of relevance to both academia and industry. Manuscripts in which ultrasonics is a central issue and not simply an incidental tool or minor issue, are welcomed. As well as top quality original research papers and review articles by world renowned experts, Ultrasonics also regularly features short communications, a calendar of forthcoming events and special issues dedicated to topical subjects.