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Application of wavelet transform and adaptive noise canceling in ultrasonic closed-crack detection
Author(s): 
Pages: 97-102
Year: Issue:  2
Journal: ACTA ACUSTICA

Abstract: 在闭合裂纹超声检测中,裂纹散射回波信号非常微弱,难以检测,本文分别用小波变换和自适应噪声抵消方法来抑制应电压背景噪声和随机电噪声,提高了信噪比,增强了裂纹检测率.
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