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Validation of miniaturised tensile testing on DMLS TI6AL4V (ELI) specimens
Cent Univ Technol, Dept Mech & Mechatron Engn, Bloemfontein, Free State, South Africa.
Cent Univ Technol, Dept Mech & Mechatron Engn, Bloemfontein, Free State, South Africa.
Karlstad University, Faculty of Technology and Science, Department of Mechanical and Materials Engineering. (Materials Engineering, Materials Science)ORCID iD: 0000-0002-9441-2502
Cent Univ Technol, Dept Mech & Mechatron Engn, Bloemfontein, Free State, South Africa.
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2016 (English)In: South African Journal of Industrial Engineering, ISSN 1012-277X, E-ISSN 2224-7890, Vol. 27, no 3, 192-200 p.Article in journal (Refereed) Published
Abstract [en]

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. 

Place, publisher, year, edition, pages
Johannesburg: South African Institute of Industrial Engineers , 2016. Vol. 27, no 3, 192-200 p.
Keyword [en]
direct metal laser sintering, mechanical properties, miniaturized tensile test samples, Ti6Al4V
National Category
Materials Engineering
Research subject
Materials Science
Identifiers
URN: urn:nbn:se:kau:diva-47571DOI: 10.7166/27-3-1666ISI: 000389635100017OAI: oai:DiVA.org:kau-47571DiVA: diva2:1061976
Available from: 2017-01-04 Created: 2017-01-04 Last updated: 2017-08-09Bibliographically approved

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Publisher's full texthttp://sajie.journals.ac.za/pub/article/view/1666

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