In-situ monitoring of fatigue crack growth using high frequency guided waves
In-situ monitoring of fatigue crack growth using high frequency guided waves
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DOI：
10.1016/j.ndteint.2014.12.007
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发表时间：
2015-04-01
影响因子：
4.2
通讯作者：
Fromme, P.
中科院分区：
文献类型：
--
作者：
Masserey, B.;Fromme, P.
紧固件孔处疲劳裂纹的发展是飞机常见的维修问题。高频引导超声波允许在不直接进入缺陷位置的情况下监测关键区域。在拉伸循环加载过程中，对铝合金试件紧固件孔侧的疲劳裂纹扩展进行了监测。使用标准超声脉冲回波测量设备，从远离的距离监测由于疲劳损伤引起的基线减去反射导波信号的能量比的变化。发现检测和监测疲劳裂纹扩展的良好灵敏度。（C）2015 Elsevier Ltd.保留所有权利。
The development of fatigue cracks at fastener holes represents a common maintenance problem for aircraft. High frequency guided ultrasonic waves allow for the monitoring of critical areas without direct access to the defect location. During cyclic loading of tensile, aluminum specimens fatigue crack growth at the side of a fastener hole was monitored. The changes in the energy ratio of the baseline subtracted reflected guided wave signal due to the fatigue damage were monitored from a stand-off distance using standard ultrasonic pulse-echo measurement equipment Good sensitivity for the detection and monitoring of fatigue crack growth was found. (C) 2015 Elsevier Ltd. All rights reserved.