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Feasibility study of acoustic sensing for the welding pool mode in variable-polarity plasma arc welding
| Content Provider | Semantic Scholar |
|---|---|
| Author | Kovacevic, Radovan |
| Copyright Year | 2002 |
| Abstract | 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 (melt-in welding process) can be clearly distinguished from the keyhole and the cutting modes. The keyhole size is inversely proportional to the Welch PSD estimate of the acoustic signal. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://www.smu.edu/-/media/Site/Lyle/RCAM/Publications/7-Acoustic-Sensing-of-Welding-Pool-Modes-in-Variable-Polari.ashx?la=en |
| Language | English |
| Access Restriction | Open |
| Subject Keyword | Acoustic cryptanalysis Extraction Image sensor Large Plasma Active Robot welding Spectral density Welch's method Welding Occupations keyhole-limpet hemocyanin polarity |
| Content Type | Text |
| Resource Type | Article |