STUDY ON CHARACTERISTICS EXTRACTION OF BURN THROUGH IN CO2 WELDING BY WAVELET TRANSFORM

Abstract

Abstract: The wavelet transform and discrete dyadic wavelet transform are introduced, and the fast wavelet transform-Mallat algorithm is analyzed. Also, the theory using the wavelet transform modulus maxima to detect the singularity is discussed. A successful practical application in the characteristics extraction of the burn through in CO2 welding of thin workpiece is discussed. This follows that the method can be used in the signals processing of the weld quality monitoring effectively.

Key words: Burn through, Characteristics extraction, Modulus maxima, Wavelet transform

CLC Number:

TG444

Huang Shisheng;Zhang Xiaonan;Lai Yizong;Gao Xiangdong. STUDY ON CHARACTERISTICS EXTRACTION OF BURN THROUGH IN CO2 WELDING BY WAVELET TRANSFORM[J]. , 1999, 35(3): 47-50.

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STUDY ON CHARACTERISTICS EXTRACTION OF BURN THROUGH IN CO2 WELDING BY WAVELET TRANSFORM

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