Real-Time Detection of Weld Defects for Automated Welding Process Base on Deep Neural Network

In the process of welding zinc-coated steel, zinc vapor causes serious porosity defects. The porosity defect is an important indicator of the quality of welds and degrades the durability and productivity of the weld. Therefore, this study proposes a deep neural network (DNN)-based non-destructive te...

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Main Authors: Seungmin Shin, Chengnan Jin, Jiyoung Yu, Sehun Rhee
Format: Article
Language:English
Published: MDPI AG 2020-03-01
Series:Metals
Subjects:
Online Access:https://www.mdpi.com/2075-4701/10/3/389
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author Seungmin Shin
Chengnan Jin
Jiyoung Yu
Sehun Rhee
author_facet Seungmin Shin
Chengnan Jin
Jiyoung Yu
Sehun Rhee
author_sort Seungmin Shin
collection DOAJ
description In the process of welding zinc-coated steel, zinc vapor causes serious porosity defects. The porosity defect is an important indicator of the quality of welds and degrades the durability and productivity of the weld. Therefore, this study proposes a deep neural network (DNN)-based non-destructive testing method that can detect and predict porosity defects in real-time, based on welding voltage signal, without requiring additional device in gas metal arc welding (GMAW) process. To this end, a galvannealed hot-rolled high-strength steel sheet applied to automotive parts was used to measure process signals in real-time. Then, feature variables were extracted through preprocessing, and correlation between the feature variables and weld porosity was analyzed. The proposed DNN based framework outperformed the artificial neural network (ANN) model by 15% or more. Finally, an experiment was conducted by using the developed porosity detection and prediction system to evaluate its field application.
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spelling doaj.art-8169648da7c54a6d94c95f339642ac9a2022-12-22T01:24:12ZengMDPI AGMetals2075-47012020-03-0110338910.3390/met10030389met10030389Real-Time Detection of Weld Defects for Automated Welding Process Base on Deep Neural NetworkSeungmin Shin0Chengnan Jin1Jiyoung Yu2Sehun Rhee3School of Mechanical Convergence Engineering, Hanyang University, Seoul 04763, KoreaSchool of Mechanical Convergence Engineering, Hanyang University, Seoul 04763, KoreaMonisys co., Ltd, 775, Gyeongin-ro, Seoul 07299, KoreaSchool of Mechanical Convergence Engineering, Hanyang University, Seoul 04763, KoreaIn the process of welding zinc-coated steel, zinc vapor causes serious porosity defects. The porosity defect is an important indicator of the quality of welds and degrades the durability and productivity of the weld. Therefore, this study proposes a deep neural network (DNN)-based non-destructive testing method that can detect and predict porosity defects in real-time, based on welding voltage signal, without requiring additional device in gas metal arc welding (GMAW) process. To this end, a galvannealed hot-rolled high-strength steel sheet applied to automotive parts was used to measure process signals in real-time. Then, feature variables were extracted through preprocessing, and correlation between the feature variables and weld porosity was analyzed. The proposed DNN based framework outperformed the artificial neural network (ANN) model by 15% or more. Finally, an experiment was conducted by using the developed porosity detection and prediction system to evaluate its field application.https://www.mdpi.com/2075-4701/10/3/389gas metal arc weldingporosityweld qualitydetectiondeep neural network
spellingShingle Seungmin Shin
Chengnan Jin
Jiyoung Yu
Sehun Rhee
Real-Time Detection of Weld Defects for Automated Welding Process Base on Deep Neural Network
Metals
gas metal arc welding
porosity
weld quality
detection
deep neural network
title Real-Time Detection of Weld Defects for Automated Welding Process Base on Deep Neural Network
title_full Real-Time Detection of Weld Defects for Automated Welding Process Base on Deep Neural Network
title_fullStr Real-Time Detection of Weld Defects for Automated Welding Process Base on Deep Neural Network
title_full_unstemmed Real-Time Detection of Weld Defects for Automated Welding Process Base on Deep Neural Network
title_short Real-Time Detection of Weld Defects for Automated Welding Process Base on Deep Neural Network
title_sort real time detection of weld defects for automated welding process base on deep neural network
topic gas metal arc welding
porosity
weld quality
detection
deep neural network
url https://www.mdpi.com/2075-4701/10/3/389
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AT jiyoungyu realtimedetectionofwelddefectsforautomatedweldingprocessbaseondeepneuralnetwork
AT sehunrhee realtimedetectionofwelddefectsforautomatedweldingprocessbaseondeepneuralnetwork