Metal Additive Manufacturing Parts Inspection Using Convolutional Neural Network

Metal additive manufacturing (AM) is gaining increasing attention from academia and industry due to its unique advantages compared to the traditional manufacturing process. Parts quality inspection is playing a crucial role in the AM industry, which can be adopted for product improvement. However, t...

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Main Authors: Wenyuan Cui, Yunlu Zhang, Xinchang Zhang, Lan Li, Frank Liou
Format: Article
Language:English
Published: MDPI AG 2020-01-01
Series:Applied Sciences
Subjects:
Online Access:https://www.mdpi.com/2076-3417/10/2/545
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author Wenyuan Cui
Yunlu Zhang
Xinchang Zhang
Lan Li
Frank Liou
author_facet Wenyuan Cui
Yunlu Zhang
Xinchang Zhang
Lan Li
Frank Liou
author_sort Wenyuan Cui
collection DOAJ
description Metal additive manufacturing (AM) is gaining increasing attention from academia and industry due to its unique advantages compared to the traditional manufacturing process. Parts quality inspection is playing a crucial role in the AM industry, which can be adopted for product improvement. However, the traditional inspection process has relied on manual recognition, which could suffer from low efficiency and potential bias. This study presented a convolutional neural network (CNN) approach toward robust AM quality inspection, such as good quality, crack, gas porosity, and lack of fusion. To obtain the appropriate model, experiments were performed on a series of architectures. Moreover, data augmentation was adopted to deal with data scarcity. L2 regularization (weight decay) and dropout were applied to avoid overfitting. The impact of each strategy was evaluated. The final CNN model achieved an accuracy of 92.1%, and it took 8.01 milliseconds to recognize one image. The CNN model presented here can help in automatic defect recognition in the AM industry.
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spelling doaj.art-cf58af7e759b402fbde178568d642f802022-12-21T22:21:06ZengMDPI AGApplied Sciences2076-34172020-01-0110254510.3390/app10020545app10020545Metal Additive Manufacturing Parts Inspection Using Convolutional Neural NetworkWenyuan Cui0Yunlu Zhang1Xinchang Zhang2Lan Li3Frank Liou4Department of Mechanical and Aerospace Engineering, Missouri University of Science and Technology, Rolla, MO 65409, USADepartment of Mechanical and Aerospace Engineering, Missouri University of Science and Technology, Rolla, MO 65409, USADepartment of Mechanical and Aerospace Engineering, Missouri University of Science and Technology, Rolla, MO 65409, USADepartment of Mechanical and Aerospace Engineering, Missouri University of Science and Technology, Rolla, MO 65409, USADepartment of Mechanical and Aerospace Engineering, Missouri University of Science and Technology, Rolla, MO 65409, USAMetal additive manufacturing (AM) is gaining increasing attention from academia and industry due to its unique advantages compared to the traditional manufacturing process. Parts quality inspection is playing a crucial role in the AM industry, which can be adopted for product improvement. However, the traditional inspection process has relied on manual recognition, which could suffer from low efficiency and potential bias. This study presented a convolutional neural network (CNN) approach toward robust AM quality inspection, such as good quality, crack, gas porosity, and lack of fusion. To obtain the appropriate model, experiments were performed on a series of architectures. Moreover, data augmentation was adopted to deal with data scarcity. L2 regularization (weight decay) and dropout were applied to avoid overfitting. The impact of each strategy was evaluated. The final CNN model achieved an accuracy of 92.1%, and it took 8.01 milliseconds to recognize one image. The CNN model presented here can help in automatic defect recognition in the AM industry.https://www.mdpi.com/2076-3417/10/2/545additive manufacturing (am)metal defectsquality inspectiondeep learningconvolutional neural network (cnn)defect classification
spellingShingle Wenyuan Cui
Yunlu Zhang
Xinchang Zhang
Lan Li
Frank Liou
Metal Additive Manufacturing Parts Inspection Using Convolutional Neural Network
Applied Sciences
additive manufacturing (am)
metal defects
quality inspection
deep learning
convolutional neural network (cnn)
defect classification
title Metal Additive Manufacturing Parts Inspection Using Convolutional Neural Network
title_full Metal Additive Manufacturing Parts Inspection Using Convolutional Neural Network
title_fullStr Metal Additive Manufacturing Parts Inspection Using Convolutional Neural Network
title_full_unstemmed Metal Additive Manufacturing Parts Inspection Using Convolutional Neural Network
title_short Metal Additive Manufacturing Parts Inspection Using Convolutional Neural Network
title_sort metal additive manufacturing parts inspection using convolutional neural network
topic additive manufacturing (am)
metal defects
quality inspection
deep learning
convolutional neural network (cnn)
defect classification
url https://www.mdpi.com/2076-3417/10/2/545
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AT xinchangzhang metaladditivemanufacturingpartsinspectionusingconvolutionalneuralnetwork
AT lanli metaladditivemanufacturingpartsinspectionusingconvolutionalneuralnetwork
AT frankliou metaladditivemanufacturingpartsinspectionusingconvolutionalneuralnetwork