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자동차용 강판의 스폿용접 전극수명예측 알고리즘 개발

Development of Algorithm for Predicting the Electrode Life of Spot Welding on Automotive Steel Plate

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주제분류기계공학

초록

Spot welding is a representative process in automotive welding and the application of intelligent systems is accelerating. In particular, in the case of welding electrode management, the timing of electrode wear and dressing was determined by continuous spot welding evaluation, however there is concerned that errors in welding equipment or processes may work in a complex manner. In this study, a dynamic resistance waveform sensing and image measurement system that greatly affects the nugget formation, which is important to the quality of spot welding, was fabricated and used. Based on the experimental data of the galvanized steel sheet, an electrode life prediction algorithm for electrode wear was derived through CNN(Convolutional Neural Network) model of machine learning training.

Abstract

Spot welding is a representative process in automotive welding and the application of intelligent systems is accelerating. In particular, in the case of welding electrode management, the timing of electrode wear and dressing was determined by continuous spot welding evaluation, however there is concerned that errors in welding equipment or processes may work in a complex manner. In this study, a dynamic resistance waveform sensing and image measurement system that greatly affects the nugget formation, which is important to the quality of spot welding, was fabricated and used. Based on the experimental data of the galvanized steel sheet, an electrode life prediction algorithm for electrode wear was derived through CNN(Convolutional Neural Network) model of machine learning training.

참고문헌 (10)

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  2. 김지선, "파이버 레이저를 이용한 알루미늄 합금과 고강도강판의 이종용접에 관한 연구", 한국기계기술학회지, 16(4), pp.1659~1664 (2014), 한국기계기술학회[DOI]
  3. 손영산, "Al7075를 이용한 GTAW공정의 용가재에 따른 용접 건전성 평가", 한국기계기술학회지, 18(6), pp.961~966 (2016), 한국기계기술학회[DOI]
  4. 강성관, "동저항 특성을 이용한 저항 스폿 용접기의 정전력과 정전류의 혼합모드 제어", 전기학회논문지, 64(11), pp.1571~1577 (2015), 대한전기학회[DOI]
  5. W. J. Zang, "Electrode life of aluminium resistance spot welding in automotive applications : a survey", Science and Technology of Welding and Joining, 22(1), pp.22~40 (2017)
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  10. 박제강, "Convolutional neural network based surface inspection system for non-patterned welding defects", International Journal of Precision Engineering and Manufacturing, 20(3), pp.363~374 (2019), 한국정밀공학회[DOI]

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