RESIDUAL STRESS MEASUREMENTS AND STRUCTURAL INTEGRITY IMPLICATIONS FOR SELECTIVE LASER MELTED TI-6AL-4V

Authors

  • CR Knowles Department of Mechanical Engineering, University of Cape Town, South Africa
  • TH Becker Department of Mechanical Engineering, University of Cape Town, South Africa
  • RB Tait Department of Mechanical Engineering, University of Cape Town, South Africa

DOI:

https://doi.org/10.7166/23-3-515

Abstract

Selective laser melting (SLM) of Ti-6Al-4V has significant potential in the aerospace and biotechnology industries. SLM employs a focused laser beam to melt successive layers of metallic powder into complex components. This process can result in the generation of high thermally-induced residual stresses. These residual stresses, together with micro-flaws/ pores from the inherent fabrication process, may lead to premature fatigue crack initiation and propagation at relatively low cyclic stresses. The hole-drilling strain gauge method was used to evaluate residual stresses within SLM Ti-6Al-4V specimens, with the intention of understanding the associated mechanisms for the successful application of SLM Ti-6Al-4V in industry.

Author Biography

CR Knowles, Department of Mechanical Engineering, University of Cape Town, South Africa

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Published

2012-12-03

How to Cite

Knowles, C., Becker, T., & Tait, R. (2012). RESIDUAL STRESS MEASUREMENTS AND STRUCTURAL INTEGRITY IMPLICATIONS FOR SELECTIVE LASER MELTED TI-6AL-4V. The South African Journal of Industrial Engineering, 23(3), 119–129. https://doi.org/10.7166/23-3-515

Issue

Vol. 23 No. 3 (2012)

Section

General Articles

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