Augmenting wire arc additive manufacturing with laser forming for generative realization of complex geometries

Gudur, S. and Simhambhatla, S (2022) Augmenting wire arc additive manufacturing with laser forming for generative realization of complex geometries. Optik, 262. pp. 1-9. ISSN 0030-4026

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Due to its advantages like higher deposition rates and lower costs, Wire Arc Additive Manufacturing (WAAM) is increasingly used to fabricate metal AM parts, particularly big-sized components. However, realization of complex geometrical features, like overhangs, remains one of the major challenges. The present work describes a hybrid approach of intervention of fiber laser intermittently during part fabrication to enhance the geometrical complexity possible. In this two-step process, a component deposited in first stage is subjected to multiple laser passes in second stage to obtain a desired angle/shape. This cycle of deposition and laser forming continues till the final desired geometry is realized. The study includes preliminary trials on deposited specimens to understand dominant laser bending mechanism and decide optimum laser process parameters. Subsequently, a few illustrative components are manufactured using current hybrid process, establishing the effectiveness of this approach in realizing complex shapes, thus laying a foundation for a potential metal 4D printing technology. © 2022 Elsevier GmbH

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IITH Creators:
IITH CreatorsORCiD
Simhambhatla, S
Item Type: Article
Additional Information: This work is supported by Advanced Manufacturing Technology (AMT), Department of Science and Technology, New Delhi, India (Sanction No. AMT/2017/082).
Uncontrolled Keywords: Generative Manufacturing, Laser forming, Overhanging features, Wire Arc Additive Manufacturing (WAAM), Yb-YAG fiber laser
Subjects: Physics > Mechanical and aerospace
Divisions: Department of Mechanical & Aerospace Engineering
Depositing User: . LibTrainee 2021
Date Deposited: 22 Jun 2022 05:13
Last Modified: 22 Jun 2022 09:11
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