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Damage Detection In Repairs Using Frequency Response Techniques

机译：使用频率响应技术的维修中的损坏检测

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Structural health monitoring (SHM) technology may be applied to composite bonded repairs to enable the continuous through-life assessment of the repair's efficacy. Adhesively bonded joints are an ideal starting point for real-time, in situ monitoring due to known mechanisms and locations of failure. Similarly, the ability to accurately monitor the health of a joint has potential to aid acceptance of adhesive bonding. This paper describes the development of an SHM technique for the detection of debonding in composite bonded patches based on frequency response. Two commonly used repair schemes, the external doubler repair and the scarf repair, are examined. The paper outlines an experimental investigation on the frequency response of the repairs with and without defects under different boundary conditions. It was found that damage could be readily detected through changes in frequency response for both types of repair. The results are discussed with implications for the development of a technology to monitor the integrity of composite bonded repairs.
机译：结构健康监测（SHM）技术可应用于复合粘结修复，以实现对修复功效的持续终生评估。由于已知的机制和故障位置，胶接接头是实时，原位监控的理想起点。类似地，准确监视关节健康的能力有可能有助于接受粘合剂粘结。本文介绍了一种基于频率响应的SHM技术的开发，该技术可用于检测复合粘结面片中的脱粘现象。研究了两种常用的修复方案，即外部倍增器修复和围巾修复。本文概述了在不同边界条件下有无缺陷修复的频率响应的实验研究。已经发现，通过两种类型的修理的频率响应变化可以容易地发现损坏。对结果进行了讨论，对监控复合粘结修复完整性的技术的发展具有启示意义。

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