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Identification of Orientation-Specific Damage Using Guided Waves and Diagnostic Imaging

机译：使用引导波和诊断成像识别定向特定的损伤

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摘要

Guided-waves-based diagnostic imaging techniques have been attracting much attention due to their merits including easily interpretable image, high identification accuracy and suitable for online surveillance. In this study, to envisage the difficulty in detecting orientation-specific damage (crack, notch etc.), a novel guided-waves-based diagnostic imaging technique capable of inspecting complicated engineering structures was developed, in terms of the relationship between damage parameters (location, orientation and severity) and extracted guided waves signal features (time-of-flight, signal correlation and signal energy). Experimental studies were performed to verify the developed diagnostic imaging approach, where a through-thickness crack was successfully identified in a metallic plate and a part of real rail structure respectively.
机译：由于其优点包括易于解释的图像，高识别精度，适用于在线监控，导致基于波的诊断成像技术已经吸引了很多关注。 在这项研究中，为了设想检测定向特定损伤（裂缝，凹口等）的难度，在损伤参数之间的关系方面，开发了一种能够检查复杂工程结构的新型引导波的诊断成像技术（ 位置，方向和严重程度）和提取的引导波信号特征（飞行时间，信号相关和信号能量）。 进行实验研究以验证开发的诊断成像方法，其中分别在金属板和一部分真正的轨道结构中成功识别了贯穿厚度裂缝。

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