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A Study on the Mechanical Properties of Additive Manufactured Polymer Materials

적층조형 폴리머 재료의 기계적 물성 연구

  • Kim, Dongbum (Dept. of Mechanical Engineering, Chungbuk Nat'l Univ.) ;
  • Lee, In Hwan (Dept. of Mechanical Engineering, Chungbuk Nat'l Univ.) ;
  • Cho, Hae Yong (Dept. of Mechanical Engineering, Chungbuk Nat'l Univ.)
  • Received : 2015.02.12
  • Accepted : 2015.05.07
  • Published : 2015.08.01

Abstract

Traditionally, additive manufacturing (AM) technology has been used to fabricate prototypes in the early development phase of a product. This technology is being applied to release manufacturing of a product because of its low cost and fast fabrication. AM technology is a process of joining materials to fabricate a product from the 3D CAD data in a layer-by-layer manner. The orientation of a layer during manufacturing can affect the mechanical properties of the product because of its anisotropy. In this paper, tensile testing of polymer-based specimens were built with a typical AM process (FDM, PolyJet and SLA) to study the mechanical properties of the AM materials. The ASTM D 638 tensile testing standard was followed for building the specimens. The mechanical properties of the specimens were determined on the basis of stress-strain curves formed by tensile tests. In addition, the fracture surfaces of the specimens were observed by SEM to analyze the results.

Keywords

Additive Manufacturing(AM);Rapid Prototyping(RP);3D Printing;Fused Deposition Modeling(FDM);PolyJet;Stereolithography Apparatus(SLA);Tensile Testing

Acknowledgement

Supported by : 산업통상자원부, 한국연구재단

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