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Sensing, modeling and control for laser-based additive manufacturing

热1 zhiqiang.tong 添加于 2010-2-4 15:23 | 3061 次阅读 | 1 个评论

作者
Hu DM, Kovacevic R
摘要
Laser-Based Additive Manufacturing (LBAM) is a promising manufacturing technology that can be widely applied to part preparation, surface modification, and Solid Freeform Fabrication (SFF). A large number of parameters govern the LBAM process. These parameters are sensitive to the environmental variations, and they also influence each other. This paper introduces the research work in RCAM on improving the performance of the LBAM process. Metal powder delivery real-time sensing and control is studied to achieve a controllable powder delivery for fabrication of functionally graded material. A closed-loop control system based on infrared image sensing is built for control of the heat input and size of the molten pool in the LBAM process. The closed-loop control results show a great improvement in the geometrical accuracy of the built features. A three-dimensional finite element model is also established to explore the thermal behavior of the molten pool in the closed-loop controlled LBAM process. (C) 2002 Elsevier Science Ltd. All rights reserved.
详细资料
- 关键词: solid free form fabrication; cladding; image sensing; control; powder delivery; finite element modeling
- 文献种类:期刊
- 期刊名称: INTERNATIONAL JOURNAL OF MACHINE TOOLS & MANUFACTURE
- 期卷页: 2003年第43卷第1期 51-60页
- 出版社: PERGAMON-ELSEVIER SCIENCE LTD, THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
- 地址: 1. So Methodist Univ, Res Ctr Adv Mfg, Richardson, TX 75081 USA
- ISBN: 0890-6955
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