Effect of In-Plane Voiding on the Fracture Behavior of Laser Sintered Polyamide

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Date

2011-08-17

Authors

Leigh, David K.
Bourell, David L.
Beaman, Joseph J. Jr

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University of Texas at Austin

Abstract

The primary contributors to poor mechanical properties in polyamide materials used during Selective Laser Sintering® are qualified. Methods to quantify the decreased mechanical properties, including Scanning Electron Microscopy (SEM) of fracture surfaces, are compared against each other and against mechanical properties of components fabricated using multiple process parameters. Of primary interest are Ultimate Tensile Strength (UTS) and Elongation at Break (EOB) of tensile specimens fabricated under conditions that produce varying degrees of ductile and brittle fracture.

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