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Research on in situ monitoring of selective laser melting: a state of the art review

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Abstract

As an additive manufacturing technology, selective laser melting (SLM) can form any complex metal parts, which has unparalleled advantages compared to traditional processing methods. However, there are still some problems such as accuracy and non-repeatability to overcome to apply SLM to production practice. The high-precision monitoring and degradation feedback technology of SLM equipment is the future development direction. The real-time monitoring machine can repair itself and avoid the tedious detection in the post-processing stage. The researchers mainly monitor the quality of the forming process by molten pool signal, temperature signal, sound signal, and scanning track. The forming process is monitored using coaxial detection or paraxial detection through a high-speed camera, pyrometer, and other equipment. This paper can provide theoretical support for the SLM intelligent monitoring field.

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Acknowledgments

This work was supported by grants 51875010 and 51875005 from the National Natural Science Foundation of China. The authors gratefully acknowledge their financial support.

Funding

This research was funded by the National Natural Science Foundation of China Grant Number 51875010 and 51875005.

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Authors and Affiliations

  1. Mechanical Industry Key Laboratory of Heavy Machine Tool Digital Design and Testing, Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing, 100124, China

    Dongju Chen, Peng Wang, Ri Pan, Chunqing Zha, Jinwei Fan, Shuai Kong, Na Li, Jia Li & Zhiqiang Zeng

  2. Beijing Key Laboratory of Advanced Manufacturing Technology, Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing, 100124, China

    Dongju Chen, Peng Wang, Ri Pan, Chunqing Zha, Jinwei Fan, Shuai Kong, Na Li, Jia Li & Zhiqiang Zeng

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  1. Dongju Chen
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Chen, D., Wang, P., Pan, R. et al. Research on in situ monitoring of selective laser melting: a state of the art review. Int J Adv Manuf Technol 113, 3121–3138 (2021). https://doi.org/10.1007/s00170-020-06432-1

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