[KSCI] Korea Science Citation Index Service

http://dx.doi.org/10.14775/ksmpe.2018.17.5.117

Investigation of Temperature-Dependent Microscopic Morphological Variation of PEEK Powder for a 3D Printer using Dissipative Particle and Molecular Dynamics Simulations

Kim, Namwon (Ingram School of Engineering, Texas State University)
Yi, Taeil (Department of Mechanical Engineering, Kyungnam University)

Publication Information

Journal of the Korean Society of Manufacturing Process Engineers / v.17, no.5, 2018 , pp. 117-122 More about this Journal

Abstract

3D printing technology and its applications have grown rapidly in academia and industry. We consider a 3D printing system designed for the selective laser sintering (SLS) method, which is one of the powder bed fusion (PBF) techniques to build up the final product by layering sintered powder slices. Thermal distortion of printing products is a critical challenge in 3D printing. This study investigates temperature-dependent conformational behaviors of 3D printed samples of sintered poly-ether-ether-ketone (PEEK) powders using molecular dynamics simulations. The wear and chemical resistance properties of PEEK are understood, as it is a well-known biocompatible material used for implants. However, studies on physical phenomena at nanoscale in PEEK are rarely published in public. We simulate dissipative particle dynamics to elucidate how a cavity regime forms in PEEK at different system temperatures. We demonstrate how PEEK structures deform subject to the system temperature distribution.

Keywords

SLS Method; PEEK Molecule; Coarse-Grained Model; Dissipative Particle Dynamics; Molecular Dynamics; Radial Pair Distribution Function; Cavity Generation;

Citations & Related Records

Times Cited By KSCI : 1 (Citation Analysis)

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