{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,24]],"date-time":"2026-04-24T16:24:25Z","timestamp":1777047865475,"version":"3.51.4"},"reference-count":22,"publisher":"Emerald","issue":"5","license":[{"start":{"date-parts":[[2013,8,16]],"date-time":"2013-08-16T00:00:00Z","timestamp":1376611200000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.emerald.com\/insight\/site-policies"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2013,8,16]]},"abstract":"<jats:sec><jats:title content-type=\"abstract-heading\">Purpose<\/jats:title><jats:p>Penetration state is one of the most important factors for judging the quality of a gas tungsten arc welding (GTAW) joint. The purpose of this paper is to identify and classify the penetration state and welding quality through the features of arc sound signal during robotic GTAW process.<\/jats:p><\/jats:sec><jats:sec><jats:title content-type=\"abstract-heading\">Design\/methodology\/approach<\/jats:title><jats:p>This paper tried to make a foundation work to achieve on\u2010line monitoring of penetration state to weld pool through arc sound signal. The statistic features of arc sound under different penetration states like partial penetration, full penetration and excessive penetration were extracted and analysed, and wavelet packet analysis was used to extract frequency energy at different frequency bands. The prediction models were established by artificial neural networks based on different features combination.<\/jats:p><\/jats:sec><jats:sec><jats:title content-type=\"abstract-heading\">Findings<\/jats:title><jats:p>The experiment results demonstrated that each feature in time and frequency domain could react the penetration behaviour, arc sound in different frequency band had different performance at different penetration states and the prediction model established by 23 features in time domain and frequency domain got the best prediction effect to recognize different penetration states and welding quality through arc sound signal.<\/jats:p><\/jats:sec><jats:sec><jats:title content-type=\"abstract-heading\">Originality\/value<\/jats:title><jats:p>This paper tried to make a foundation work to achieve identifying penetration state and welding quality through the features of arc sound signal during robotic GTAW process. A total of 23 features in time domain and frequency domain were extracted at different penetration states. And energy at different frequency bands was proved to be an effective factor for identifying different penetration states. Finally, a prediction model built by 23 features was proved to have the best prediction effect of welding quality.<\/jats:p><\/jats:sec>","DOI":"10.1108\/ir-09-2012-417","type":"journal-article","created":{"date-parts":[[2013,8,14]],"date-time":"2013-08-14T11:36:15Z","timestamp":1376480175000},"page":"474-493","source":"Crossref","is-referenced-by-count":32,"title":["Research on detection of welding penetration state during robotic GTAW process based on audible arc sound"],"prefix":"10.1108","volume":"40","author":[{"given":"Na","family":"Lv","sequence":"first","affiliation":[]},{"given":"Yanling","family":"Xu","sequence":"additional","affiliation":[]},{"given":"Jiyong","family":"Zhong","sequence":"additional","affiliation":[]},{"given":"Huabin","family":"Chen","sequence":"additional","affiliation":[]},{"given":"Jifeng","family":"Wang","sequence":"additional","affiliation":[]},{"given":"Shanben","family":"Chen","sequence":"additional","affiliation":[]}],"member":"140","reference":[{"key":"key2022021220135658300_b1","unstructured":"Araia, Y., Inoue, K., Fuiamata, M. and Toh, T. 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