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Experimental characterization of the mechanical properties of 3D-printed ABS and polycarbonate parts

Rapid prototyping journal, 2017-01, Vol.23 (4), p.811-824 [Peer Reviewed Journal]

Emerald Publishing Limited ;Emerald Publishing Limited 2017 ;ISSN: 1355-2546 ;EISSN: 1758-7670 ;DOI: 10.1108/RPJ-03-2016-0042

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Title:
Experimental characterization of the mechanical properties of 3D-printed ABS and polycarbonate parts
Author: Cantrell, Jason T ; Rohde, Sean ; Damiani, David ; Gurnani, Rishi ; DiSandro, Luke ; Anton, Josh ; Young, Andie ; Jerez, Alex ; Steinbach, Douglas ; Kroese, Calvin ; Ifju, Peter G
Subjects: 3-D printers ; ABS resins ; Acrylonitrile butadiene styrene ; Additive manufacturing ; Aerospace engineering ; Anisotropy ; Composite materials ; Construction ; Design ; Digital imaging ; Dimensional measurement ; Elongation ; Failure analysis ; Flux density ; Lasers ; Materials science ; Mechanical properties ; Modulus of elasticity ; Orientation ; Plastics ; Poisson's ratio ; Polycarbonate resins ; Polymers ; Printed materials ; Radiation ; Rapid prototyping ; Raster ; Roads & highways ; Shear modulus ; Shear properties ; Shear strain ; Shear strength ; Shear stress ; Shear tests ; Strain ; Stress-strain curves ; Studies ; Tensile properties ; Tensile strength ; Tensile stress ; Tension tests ; Test methods ; Three dimensional printing ; Titanium alloys ; Yield strength ; Yield stress
Is Part Of: Rapid prototyping journal, 2017-01, Vol.23 (4), p.811-824
Description: Purpose This paper aims to present the methodology and results of the experimental characterization of three-dimensional (3D) printed acrylonitrile butadiene styrene (ABS) and polycarbonate (PC) parts utilizing digital image correlation (DIC). Design/methodology/approach Tensile and shear characterizations of ABS and PC 3D-printed parts were performed to determine the extent of anisotropy present in 3D-printed materials. Specimens were printed with varying raster ([+45/−45], [+30/−60], [+15/−75] and [0/90]) and build orientations (flat, on-edge and up-right) to determine the directional properties of the materials. Tensile and Iosipescu shear specimens were printed and loaded in a universal testing machine utilizing two-dimensional (2D) DIC to measure strain. The Poisson’s ratio, Young’s modulus, offset yield strength, tensile strength at yield, elongation at break, tensile stress at break and strain energy density were gathered for each tensile orientation combination. Shear modulus, offset yield strength and shear strength at yield values were collected for each shear combination. Findings Results indicated that raster and build orientations had negligible effects on the Young’s modulus or Poisson’s ratio in ABS tensile specimens. Shear modulus and shear offset yield strength varied by up to 33 per cent in ABS specimens, signifying that tensile properties are not indicative of shear properties. Raster orientation in the flat build samples reveals anisotropic behavior in PC specimens as the moduli and strengths varied by up to 20 per cent. Similar variations were observed in shear for PC. Changing the build orientation of PC specimens appeared to reveal a similar magnitude of variation in material properties. Originality/value This article tests tensile and shear specimens utilizing DIC, which has not been employed previously with 3D-printed specimens. The extensive shear testing conducted in this paper has not been previously attempted, and the results indicate the need for shear testing to understand the 3D-printed material behavior fully.
Publisher: Bradford: Emerald Publishing Limited
Language: English
Identifier: ISSN: 1355-2546
EISSN: 1758-7670
DOI: 10.1108/RPJ-03-2016-0042
Source: ProQuest Central

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Experimental characterization of the mechanical properties of 3D-printed ABS and polycarbonate parts

Emerald Publishing Limited ;Emerald Publishing Limited 2017 ;ISSN: 1355-2546 ;EISSN: 1758-7670 ;DOI: 10.1108/RPJ-03-2016-0042

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