Detection of delamination defects in CFRP materials using ultrasonic signal processing
Detection of delamination defects in CFRP materials using ultrasonic signal processing
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DOI：
10.1016/j.ultras.2008.04.005
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发表时间：
2008-12-01
期刊：
影响因子：
4.2
通讯作者：
Guessoum, Abderrezak
中科院分区：
文献类型：
--
作者：
Benammar, Abdessalem;Drai, Redouane;Guessoum, Abderrezak
在本文中，信号处理技术进行测试，以解决与分层相关的回波在碳纤维增强聚合物多层复合材料（CFRP）检测超声方法的能力。这些方法包括分裂频谱处理（SSP）和期望最大化（EM）算法。进行了缺陷检测的仿真研究，并对飞机上有无分层缺陷的CFRP进行了实验验证。比较了它们分辨回波的能力。(c)2008 Elsevier B.V.保留所有权利。
In this paper, signal processing techniques are tested for their ability to resolve echoes associated with delaminations in carbon fiber-reinforced polymer multi-layered composite materials (CFRP) detected by ultrasonic methods. These methods include split spectrum processing (SSP) and the expectation-maximization (EM) algorithm. A simulation study on defect detection was performed, and results were validated experimentally on CFRP with and without delamination defects taken from aircraft. Comparison of the methods for their ability to resolve echoes are made. (c) 2008 Elsevier B.V. All rights reserved.