P ITCH-CATCH AIR-COUPLED ULTRASONIC TECHNIQUE FOR DETECTION OF BARELY VISIBLE IMPACT DAMAGES IN COMPOSITE LAMINATES
P ITCH-CATCH AIR-COUPLED ULTRASONIC TECHNIQUE FOR DETECTION OF BARELY VISIBLE IMPACT DAMAGES IN COMPOSITE LAMINATES
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用于检测复合层压板中几乎不可见的冲击损伤的 Pitch-Catch 空气耦合超声波技术
DOI：
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发表时间：
2015
期刊：
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通讯作者：
T. Uhl
中科院分区：
文献类型：
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作者：
L. Ambrozinski;B. Piwakowski;T. Stepinski;L. Pieczonka;T. Uhl
在本文中，我们展示了兰姆波的应用，诱发和使用空气耦合传感器，其目的是检测几乎不可见的冲击损伤（BVID）。实验结果，使用一对空气耦合换能器在pitchcatch设置操作，提出。在这种设置中，通过改变传感器的入射角，可以选择性地激发和接收选定的兰姆波模式。利用S0兰姆波模式对碳纤维增强复合材料（CFRP）板进行了扫描，分析了不同的损伤检测策略对CFRP板冲击损伤的检测效果。
In this paper we demonstrate an application of Lamb waves, evoked and sensed using air-coupled transducers, with the aim to detect barely visible impact damages (BVID). Experimental results, performed using a pair of air-coupled transducers operating in pitchcatch setup, are presented. In this setup, selective excitation and reception of selected Lamb wave modes is possible by changing transducers’ angle of incidence. Results of scanning of a carbon-fiber reinforced polymer (CFRP) panel using S0 Lamb wave mode are presented in the paper, and different damage detection strategies are analyzed to detect impact damages in the panel.