用于表面缺陷监测的两次反射超声波体波

IF 3.8 2区 物理与天体物理 Q1 ACOUSTICS
Voon-Kean Wong , Xiaotian Li , Yasmin Mohamed Yousry , Marilyne Philibert , Chao Jiang , David Boon Kiang Lim , Percis Teena Christopher Subhodayam , Zheng Fan , Kui Yao
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引用次数: 0

摘要

这项研究提供了一种超声波结构健康监测(SHM)方法,用于评估位于同一表面和压电超声波换能器阵列一侧的缺陷。该方法基于对飞行时间衍射(TOFD)技术的增强型全滑配置所获得的沿厚度方向传播的超声波体波的分析。与只考虑超声换能器和缺陷之间直接路径的现有 TOFD 设置不同,我们的超声监测配置涉及两次反射超声体波(TRBW)。TRBW 的传播路线是从位于缺陷同侧的超声波发射器开始,经过后墙、缺陷尖端、后墙,最后到达同一个或另一个超声波换能器。我们在研究中进行了理论分析和实验验证。我们展示了一种用于有效检测和绘制铝合金块表面缺陷生长图的简化算法,其表面缺陷从 2.80 毫米深度开始递增,其中采用了由原位压电涂层制成的保形直写超声换能器 (DWT)。我们的方法提供了一种有效监测近表面缺陷的超声波方法,超声波换能器可以方便地安装在缺陷的同一表面和同一侧。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Twice reflected ultrasonic bulk wave for surface defect monitoring
This work offers an ultrasonic structural health monitoring (SHM) approach for assessing the defects located on the same surface and at one side of piezoelectric ultrasonic transducer array. It is based on the analysis of ultrasonic bulk wave travelling in the thickness direction obtained from an enhanced full-skip configuration of the time-of-flight diffraction (TOFD) technique. In contrast to existing TOFD setup only considering the direct paths between the ultrasonic transducer and defect, our ultrasound monitoring configuration involves twice reflected ultrasonic bulk wave (TRBW). The TRBW travels following the propagation route from an ultrasonic transmitter located at the same side of the defect initiated, the backwall, the defect tip, the backwall again and finally to the same or another ultrasonic transducer. Both theoretical analyses and experimental validations have been conducted in our study. A simplified algorithm for efficient detection and mapping the growth of a surface defect in an aluminum alloy block has been demonstrated with an incremental surface defect growth starting from 2.80 mm in depth, in which conformable direct-write ultrasonic transducers (DWT) made of in-situ piezoelectric coating are implemented. Our approach provides an ultrasonic method for effective monitoring the near surface defects with the ultrasonic transducers conveniently implemented on the same surface and at the same side of the defects.
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来源期刊
Ultrasonics
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.
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