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Design and Manufacturing Guidelines for Additive Manufacturing of High Porosity Cellular Structures

Kabbur, Nikhil
http://rave.ohiolink.edu/etdc/view?acc_num=ucin1504878916930908

Abstract Details

2017, MS, University of Cincinnati, Engineering and Applied Science: Mechanical Engineering.
Additive Manufacturing (AM) is a layer by layer manufacturing approach for building parts. Additive manufacturing as a technology provides immense design freedom, especially in the field of medical implant design. Revolutionary technologies such as Direct Metal Laser Sintering (DMLS) and Electron Beam Melting (EBM) have the potential to customize metal implants to an individual patient. To take advantage of this technology it is important to develop rules that can transform concepts to real world designs. There are many applications that can potentially use additively manufactured cellular structures, but there is a need to provide design guidelines for manufacturability of such structures. This thesis explores the opportunities and challenges in manufacturing high porosity cellular structures, and provides a measure of manufacturability of different cellular structures and design guidelines to improve manufacturability. Cellular structures are defined as structures made from repeating a certain unit cell to form a block, and the characteristic length of each cell is in the range of 0.1 mm to 10 mm. The additive manufacturing technique considered in this work is laser powder bed fusion process (DMLS). This research studies and tests the effect of unit cell type, unit cell size, volume fraction, and orientation on the manufacturability of the cellular structures using experimental builds. Based on these parameters the manufacturability of each cellular structure is evaluated and design guidelines are provided to design and manufacture high porosity cellular structures.
Sam Anand, Ph.D. (Committee Chair)
Ashley Pazy Puente, Ph.D. (Committee Member)
Murali Sundaram, Ph.D. (Committee Member)
93 p.
Mechanics
Additive Manufacturing; Lattice Structures; High Porosity Cellular Structures; DMLS; Medical implants; 316L

Recommended Citations

Citations

  • Kabbur, N. (2017). Design and Manufacturing Guidelines for Additive Manufacturing of High Porosity Cellular Structures [Master's thesis, University of Cincinnati]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1504878916930908

    APA Style (7th edition)

  • Kabbur, Nikhil. Design and Manufacturing Guidelines for Additive Manufacturing of High Porosity Cellular Structures. 2017. University of Cincinnati, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=ucin1504878916930908.

    MLA Style (8th edition)

  • Kabbur, Nikhil. "Design and Manufacturing Guidelines for Additive Manufacturing of High Porosity Cellular Structures." Master's thesis, University of Cincinnati, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1504878916930908

    Chicago Manual of Style (17th edition)

ucin1504878916930908
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© 2017, all rights reserved.
This open access ETD is published by University of Cincinnati and OhioLINK.