20 April 2012 Fatigue damage monitoring for basalt fiber reinforced polymer composites using acoustic emission technique
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Abstract
Basalt fiber reinforced polymer (BFRP) is a structural material with superior mechanical properties. In this study, unidirectional BFRP laminates with 14 layers are made with the hand lay-up method. Then, the acoustic emission technique (AE) combined with the scanning electronic microscope (SEM) technique is employed to monitor the fatigue damage evolution of the BFRP plates in the fatigue loading tests. Time-frequency analysis using the wavelet transform technique is proposed to analyze the received AE signal instead of the peak frequency method. A comparison between AE signals and SEM images indicates that the multi-frequency peaks picked from the time-frequency curves of AE signals reflect the accumulated fatigue damage evolution and fatigue damage patterns. Furthermore, seven damage patterns, that is, matrix cracking, delamination, fiber fracture and their combinations, are identified from the time-frequency curves of the AE signals.
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Wentao Wang, Hui Li, and Zhi Qu "Fatigue damage monitoring for basalt fiber reinforced polymer composites using acoustic emission technique", Proc. SPIE 8348, Health Monitoring of Structural and Biological Systems 2012, 83482S (20 April 2012); doi: 10.1117/12.914628; https://doi.org/10.1117/12.914628
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