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Optimization of perforated support structures for electron beam additive manufacturing

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Abstract

The current study aims to design optimal support structures for the fabrication of titanium alloy overhangs by electron beam melting such that they are easy to remove and consume less material without affecting the part quality. To achieve this objective, the effect of design and process parameters of the perforated block support structures was evaluated and optimized using response surface methodology and multi-objective genetic algorithm. The results showed that it is possible to reduce the support volume by 19% and support removal time by 45% without any warping deformation using the optimum combinations (tooth height of 2.885 mm, tooth base interval of 1.677 mm, perforation beam of 4.611 mm, beam current of 5.327 mA, and beam scan speed 1347.197 mm/s). In addition the multi-objective optimization results found the optimal perforated supports characterized by 4-mm tooth height, 2-mm tooth base interval, 2-mm perforated beam, 6-mA beam current, and 1600 mm/s beam scan speed. The study also showed that the use of optimum support structures results in substantial reduction of the support volume and post-processing.

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Funding

The authors are grateful to the Raytheon Chair for Systems Engineering for funding.

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Authors and Affiliations

  1. Industrial Engineering Department, College of Engineering and Architecture, Alyamamah University, Riyadh, 11512, Saudi Arabia

    Wadea Ameen & Naveed Ahmed

  2. Industrial Engineering Department, King Saud University, Riyadh, Saudi Arabia

    Abdulrahman Al-Ahmari, Abdulmajeed Dabwan & Husam Kaid

  3. Advanced Manufacturing Institute, Raytheon Chair for Systems Engineering (RCSE Chair), King Saud University, P.O. Box 800, Riyadh, 11421, Saudi Arabia

    Muneer Khan Mohammed & Abdulrahman Al-Ahmari

Authors
  1. Wadea Ameen
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  2. Muneer Khan Mohammed
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  3. Abdulrahman Al-Ahmari
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  4. Naveed Ahmed
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  5. Abdulmajeed Dabwan
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  6. Husam Kaid
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Correspondence to Wadea Ameen.

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Ameen, W., Mohammed, M.K., Al-Ahmari, A. et al. Optimization of perforated support structures for electron beam additive manufacturing. Int J Adv Manuf Technol 120, 7305–7323 (2022). https://doi.org/10.1007/s00170-022-09195-z

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  • DOI: https://doi.org/10.1007/s00170-022-09195-z

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