VALIDATION OF MINIATURISED TENSILE TESTING ON DMLS TI6AL4V (ELI) SPECIMENS

Authors

  • Ian van Zyl Department of Mechanical and Mechatronic Engineering, Central University of Technology
  • M Moletsane Department of Mechanical and Mechatronic Engineering, Central University of Technology
  • Pavel Krakhmalev Department of Engineering and Physics, Karlstad University
  • I Yadroitsava Department of Mechanical and Mechatronic Engineering, Central University of Technology
  • I Yadroitsev Department of Mechanical and Mechatronic Engineering, Central University of Technology

DOI:

https://doi.org/10.7166/27-3-1666

Keywords:

direct metal laser sintering, mechanical properties, miniaturized tensile test samples, Ti6Al4V

Abstract

Direct metal laser sintering (DMLS) is a relatively new technology that is developing rapidly. Since DMLS material is created by melting/solidifying tracks and layers from powder, even building geometry can influence the mechanical properties. To certify a material, the testing specimens must be designed and manufactured according to the appropriate standards. Miniaturised tensile DMLS samples could be a good alternative for express quality control, and could reduce the cost of DMLS-specific testing. In this study, as-built and stress-relieved miniaturised tensile DMLS Ti6Al4V (ELI) specimens with different surface qualities were investigated. The fracture surfaces and mechanical properties of the mini-tensile specimens were analysed and compared with standard full-sized specimens also manufactured by DMLS. The obtained data showed the applicability of mini-tensile tests for the express analysis of DMLS objects if a correction factor is applied for the calculation of the load-bearing cross-section of the specimen. 

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Published

2016-11-11

How to Cite

van Zyl, I., Moletsane, M., Krakhmalev, P., Yadroitsava, I., & Yadroitsev, I. (2016). VALIDATION OF MINIATURISED TENSILE TESTING ON DMLS TI6AL4V (ELI) SPECIMENS. The South African Journal of Industrial Engineering, 27(3), 192–200. https://doi.org/10.7166/27-3-1666

Issue

Vol. 27 No. 3 (2016)

Section

General Articles

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