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A novel image feature based self-supervised learning model for effective quality inspection in additive manufacturing

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Abstract

With the rapid development of additive manufacturing (AM) technology, quality inspection has become one of the most crucial research topics in additive manufacturing. Although numerous image-based deep learning methods have been successfully developed to monitor and inspect AM product quality effectively, many require substantial labels in order to achieve satisfactory training, which is often impractical in real-life AM processes. In this article, a novel image feature-based self-supervised learning (IFSSL) model is proposed for effective quality inspection in AM. Through a feature-based image fusion approach based on defect-relevant feature extraction, the IFSSL model is able to guide machine vision to focus on highlighted defect-relevant regions in the AM product image. In addition, the defect-relevant features are used to generate pseudo-labels for self-supervised learning. With self-supervision, the IFSSL model leverages the advantages of supervised learning and unsupervised learning by requiring no sample label while retaining defect-relevant information. The effectiveness of the proposed IFSSL method is demonstrated through a real case study of fused deposition modeling product image dataset. Results show that the IFSSL model can guide machine vision to pay more attention to potential defective regions, enabling it to detect and locate faults effectively and automatically for machine vision guided quality inspection.

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Data availability

The Fused Deposition Modeling (FDM) 3D Printing Specimens Scan dataset used in this study are available to the public under a Creative Commons Attribution (CC-BY) license at https://doi.org/10.5281/zenodo.159676. Description of the dataset can be found in the open access article by Baumann et al. (2017) at https://doi.org/10.3390/data2010003.

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Acknowledgements

This work is supported by National Natural Science Foundation of China (71971181 and 72032005) and by Research Grant Council of Hong Kong (11200621). This research is supported by the International Science and Technology Cooperation Program of Guangdong Province (Project #2022A0505050047) and Hong Kong Innovation and Technology Commission (InnoHK Project CIMDA).

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Correspondence to Chun Fai Lui.

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Lui, C.F., Maged, A. & Xie, M. A novel image feature based self-supervised learning model for effective quality inspection in additive manufacturing. J Intell Manuf (2023). https://doi.org/10.1007/s10845-023-02232-y

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  • DOI: https://doi.org/10.1007/s10845-023-02232-y

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