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Research of on-line monitoring technology and control strategy for laser-directed energy deposition: a review

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Abstract

As an advanced metal additive manufacturing technology, laser-directed energy deposition (DED-LB) has attracted a lot of attention in recent years, and is increasingly used in aerospace, automotive, marine, and biomedical applications. However, as industry application standards continue to improve, the challenges of part quality, process stability, and molding efficiency faced by DED-LB are becoming more and more prominent. On-line monitoring and real-time quality regulation can effectively avoid quality defects in processing, which is an effective measure to solve the problem. This paper summarizes the current research status of on-line monitoring means and closed-loop quality regulation technology for DED-LB. The on-line monitoring signals and related sensing devices mainly based on image signals, temperature signals, spectral signals, acoustic emission signals, and X-ray imaging, as well as the closed-loop control strategies and intelligent optimization methods in the process are discussed. Finally, a view on the future direction of on-line monitoring-control system for DED-LB is presented.

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Funding

This research work was supported by the National Key Research and Development Program of China (Grant No. 2023YFB4606002), National Natural Science Foundation of China (Grant No. 52175455), University-Industry Collaborative Education Program of China (Grant No. 230800676014006), Liaoning Provincial Natural Science Foundation of China (Grant No. 2023-MSBA-006), and the Guangdong Provincial University Innovation Team Project (Grant No. 2020KCXTD012).

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  1. School of Mechanical Engineering, Dalian University of Technology, Dalian, 116024, China

    Weiwei Liu, Tandong Wang, Bingjun Liu, Wanyang Li, Guangda Hu &  Zhenxin Lyu

  2. State Key Laboratory of High-Performance Precision Manufacturing, Dalian University of Technology, Dalian, 116024, China

    Weiwei Liu, Tandong Wang, Bingjun Liu, Wanyang Li, Guangda Hu &  Zhenxin Lyu

  3. Ningbo Institute of Dalian University of Technology, Ningbo, 315000, China

    Weiwei Liu

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Liu, W., Wang, T., Liu, B. et al. Research of on-line monitoring technology and control strategy for laser-directed energy deposition: a review. Int J Adv Manuf Technol (2024). https://doi.org/10.1007/s00170-024-13893-1

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