Fracture Toughness of Additively Manufactured ULTEM 1010

Abstract

One of the polymer additive manufacturing processes commonly used today is fused deposition modelling (FDM). FDM is the process of manufacturing three-dimensional structure through the use of a layer-by-layer printing of the polymer filament. Due to the anisotropic nature of FDM parts, the orientation of the rasters and the build orientation have an effect on the mechanical properties of a part. This study evaluates the fracture toughness of FDM solid-build specimens manufactured from Ultem 1010. The effects of build orientation and raster orientation were investigated through the use of a full-factorial design of experiments. The fracture toughness was obtained using single-edge notch bend test for a range of build orientations and rasters typically used in the FDM process. The design of experiments uses the results of the single-edge notch bend test to determine the significance the factors, build orientation and raster angle, have on the response variable, conditional critical stress intensity factor. Ultem 1010 parts were also microscopically examined to understand the primary failure mode around the rasters. The primary results of this study include the relationship of the build parameters to each other and to the fracture toughness of Ultem 1010.

Department(s)

Mechanical and Aerospace Engineering

Research Center/Lab(s)

Intelligent Systems Center

Second Research Center/Lab

Center for High Performance Computing Research

Keywords and Phrases

3D printers; Additives; Design of experiments; Mechanical properties; Build orientation; Build Parameters; Critical stress intensity factor; Full factorial design; Fused deposition modelling; Polymer filaments; Single edge notch bends; Three-dimensional structure; Fracture toughness

International Standard Serial Number (ISSN)

1745-2759; 1745-2767

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2018 Taylor & Francis, All rights reserved.

Publication Date

01 Mar 2019

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