Wavelet transform-based feature extraction for ultrasonic flaw signal classification

Wavelet transform-based feature extraction for ultrasonic flaw signal classification
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基于小波变换的超声缺陷信号分类特征提取

DOI:
10.1007/s00521-012-1305-7
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发表时间:
2012-12
影响因子:
6
通讯作者:
Li Qiufeng
Li Qiufeng
中科院分区:
计算机科学3区
文献类型:
--
作者:
Yang Peng;Li Qiufeng

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在本文中,我们提出了自动分类模型的超声缺陷信号从碳纤维增强聚合物标本。基于小波变换的不同国家的最先进的策略被用于特征提取。针对现有方法的不足,提出了一种基于小波包变换的局部能量特征提取方法。通过对人工神经网络和支持向量机的训练,验证了不同特征提取方法对缺陷信号分类的有效性。实验结果表明,该方法能够提取可靠的特征,有效地对不同类型的超声缺陷信号进行分类,具有较高的分类精度。
In this paper, we present automatic classification models for ultrasonic flaw signals acquired from carbon-fiber-reinforced polymer specimens. Different state-of-the-art strategies based on wavelet transform are utilized for feature extraction. Furthermore, a wavelet packet transform-based local energy feature extraction method is proposed to solve the deficiencies of the existing methods. Artificial neural networks and support vector machines are trained to validate the effectiveness of different feature extraction methods for flaw signal classification. Experimental results show that the proposed method can extract reliable features to effectively classify the different ultrasonic flaw signals with high accuracy.
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