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An Automatic Damage Detection Methodology for Structural Health Monitoring during Fatigue Tests

机译：用于疲劳测试期间结构健康监测的自动损伤检测方法

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In this paper the use of several automatic damage detection techniques will be validated with respect to their use for on-line structural health monitoring during fatigue tests. The overview of techniques considered in the paper contains both low-frequency (1-100Hz), middle-frequency (100Hz-1kHz) and high-frequency (1MHz-10MHz) techniques. Moreover, both linear and nonlinear damage indicators are investigated. From the experimental results in the paper it can be concluded that a combined use of the static stiffness and the transmitted ultrasonic energy leads to the best results. Indeed, in that case both small, medium and large size cracks can be monitored with a simple experimental set up. In addition, valuable information on the size of the crack is available.
机译：本文将就疲劳测试期间在线结构健康监测中使用的几种自动损伤检测技术进行验证。本文所考虑的技术概述包括低频（1-100Hz），中频（100Hz-1kHz）和高频（1MHz-10MHz）技术。此外，还研究了线性和非线性损伤指标。从本文的实验结果可以得出结论，静态刚度和传输的超声能量的组合使用可产生最佳结果。确实，在那种情况下，可以通过简单的实验装置来监视小，中和大尺寸的裂缝。另外，可以获得有关裂纹尺寸的有价值的信息。

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