Classification of molten pool modes in variable polarity plasma arc welding based on acoustic signature
نویسندگان
چکیده
The relationships between the acoustic signal and the modes of the welding pool such as no-keyhole (melt-in), keyhole and cutting in variable polarity plasma arc welding (VPPAW) are investigated. Welch power spectral density (PSD) estimate is used for preprocessing the sound data. A neural network (NN) is used to distinguish the keyhole mode from the cutting mode. The results show that the keyhole mode can be distinguished from the cutting mode under the experiment conditions in this paper. © 2005 Elsevier B.V. All rights reserved.
منابع مشابه
Feasibility study of acoustic sensing for the welding pool mode in variable-polarity plasma arc welding
The relationships between the acoustic signal and the modes of the welding pool, such as no-keyhole (melt-in), keyhole and cutting, in variable-polarity plasma arc welding are investigated. The Welch power spectral density (PSD) estimate and short-time Fourier transformation are implemented to analyse and identify the diVerent modes of the welding pool. The results show that the no-keyhole mode...
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