Comparative Evaluation of Additive Manufacturing Processes

Joshi, Mukund and Shetty, Nagaraj and Bharath, N L S and Surapaneni, Chanakya Varma (2016) Comparative Evaluation of Additive Manufacturing Processes. Indian Journal of Advances in Chemical Science, S1 (1). pp. 22-26. ISSN 2320-0898

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Rapid prototyping (RP) is an additive manufacturing process used for creating objects that are inconvenient or expensive to manufacture by conventional machining processes. Considering its growing popularity in today’s world, it becomes necessary to quantify this technology to give its users a clear picture about how beneficial RP could be if it were made commonly available at cheaper rates. One of the most useful manufacturing technologies existing today, RP helps in the creation of miniature prototypes of large machines and structures, medical equipment, and even art forms. There are several different forms of this technology which employs different methods and different materials to print three-dimensional solid objects. This creates a dilemma to the user, as he has to make a choice between these forms of RP to use it for his needs. This paper emphasizes on the qualitative testing of identical specimens created by two of the most popular RP processes available today, namely, stereolithography apparatus (SLA) and selective laser sintering (SLS). The specimens will be evaluated on the parameters of dimensional accuracy, tensile strength, water absorption, shore hardness, surface roughness, density, and microscopic defect structure. The outcome of this study aims at helping people to understand SLS and SLA better in terms of the products they create so that it becomes easier for users to make a choice between the two. It also aims at highlighting the above-mentioned statistical information about SLA and SLS so that they may be improvised and enhanced in the future.

Item Type: Article
Uncontrolled Keywords: Stereolithography, Selective laser sintering, Rapid prototyping, Additive manufacturing, Mechanical properties.
Subjects: Engineering > MIT Manipal > Mechanical and Manufacturing
Depositing User: MIT Library
Date Deposited: 13 Jul 2016 15:02
Last Modified: 13 Jul 2016 15:02

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