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Technical Brief

A Test Part for Evaluating the Accuracy and Resolution of a Polymer Powder Bed Fusion Process

[+] Author and Article Information
Jared Allison

Mechanical Engineering Department, The University of Texas at Austin
jared.allison@utexas.edu

Conner Sharpe

Mechanical Engineering Department, The University of Texas at Austin
csharpe93@gmail.com

Carolyn Seepersad

Mechanical Engineering Department, The University of Texas at Austin
ccseepersad@mail.utexas.edu

1Corresponding author.

ASME doi:10.1115/1.4037303 History: Received January 19, 2017; Revised June 13, 2017

Abstract

Additive manufacturing (AM) has many potential industrial applications because highly complex parts can be fabricated with little or no tooling cost. However, one barrier to widespread use of additive manufacturing is that many designers lack detailed information about the capabilities and limitations of each process. A need exists for comprehensive, statistically meaningful metrology studies to be performed on AM technologies. This research focuses on characterizing the process of polymer powder bed fusion (PBF). A test part is designed to evaluate the accuracy and resolution of the polymer selective laser sintering (SLS) process for a wide variety of features. The unique construction of this test part allows it to maximize feature density while maintaining a small build volume so that it can easily fit into most SLS builds. Using this custom test part, a metrology study can be conducted to better understand the process or to evaluate the accuracy of specific machines.

Copyright (c) 2017 by ASME
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