Journal of the Society of Naval Architects of Korea (대한조선학회논문집)

The Society of Naval Architects of Korea (대한조선학회)
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Verification of Resistance Welding Quality Based on Deep Learning

딥 러닝 기반의 이미지학습을 통한 저항 용접품질 검증

  • Kang, Ji-Hun (Dept. of Naval Architecture and Ocean Engineering, Dong-Eui University) ;
  • Ku, Namkug (Dept. of Naval Architecture and Ocean Engineering, Dong-Eui University)
  • 강지훈 (동의대학교 조선해양공학과) ;
  • 구남국 (동의대학교 조선해양공학과)
  • Received : 2019.01.07
  • Accepted : 2019.08.23
  • Published : 2019.12.20
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Abstract

Welding is one of the most popular joining methods and most welding quality estimation methods are executed using joined material. This paper propose welding quality estimation methods using dynamic current, voltage and resistance which are obtained during welding in real time. There are many kinds of welding method. Among them, we focused on the projection welding and gathered dynamic characteristics from two different types of projection welding. For image learning, graphs are drawn using obtained current, voltage and resistance, and the graphs are converted to images. The images are labeled with two sub-categories - normal and defect. For deep learning of images obtained from welding, Convolutional Neural Network (CNN) is applied, and Tensorflow was used as a framework for deep learning. With two resistance welding test datasets, we conclude that the Convolutional Neural Network helps in predicting the welding quality.

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References

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