Working Paper Article Version 1 This version is not peer-reviewed

Design and Fabrication of Strong Parts from Biodegradable Polymer with a Desktop 3D Printer

Version 1 : Received: 19 March 2019 / Approved: 20 March 2019 / Online: 20 March 2019 (14:52:37 CET)

A peer-reviewed article of this Preprint also exists.

Kuznetsov, V.E.; Tavitov, A.G.; Urzhumtsev, O.D.; Mikhalin, M.V.; Solonin, A.N. Design and Fabrication of Strong Parts from Poly (Lactic Acid) with a Desktop 3D Printer: A Case with Interrupted Shell. Polymers 2019, 11, 760. Kuznetsov, V.E.; Tavitov, A.G.; Urzhumtsev, O.D.; Mikhalin, M.V.; Solonin, A.N. Design and Fabrication of Strong Parts from Poly (Lactic Acid) with a Desktop 3D Printer: A Case with Interrupted Shell. Polymers 2019, 11, 760.

Journal reference: Polymers 2019, 11, 760
DOI: 10.3390/polym11050760

Abstract

The parts obtained by FFF technology are anisotropic in any direction; while the whole part constitutes out of layers, each of the layers include one or more perimeters of shell and the infill with density from 0 to 100%. Mechanical performance of FFF parts depends on its shape, orientation, constitution and 3D printing parameters. A classification for shapes of parts obtained by FFF and stressed during its operation is provided. For the most questionable class (parts with interrupted shell critically stressed on interlayer boundaries) a representative sample and testing apparatus is developed. Different approaches to the sample shape modification were applied and tested. The part shape optimization resulted in increment of the force, required to fracture the part from 483 to 1096 N.

Subject Areas

Design for additive manufacturing; desktop 3D printing; fused filament fabrication; polylactic acid; mechanical strength

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