Stress Relaxation and Creep of a Polymer-Aluminum Composite Produced through Selective Laser Sintering

Jerzy Bochnia; Slawomir Blasiak

doi:10.3390/polym12040830

Stress Relaxation and Creep of a Polymer-Aluminum Composite Produced through Selective Laser Sintering

Polymers (Basel). 2020 Apr 5;12(4):830. doi: 10.3390/polym12040830.

Authors

Jerzy Bochnia¹, Slawomir Blasiak¹

Affiliation

¹ Department of Manufacturing Engineering and Metrology, Faculty of Mechatronics and Mechanical Engineering, Kielce University of Technology, 25-314 Kielce, Poland.

Abstract

This article discusses the rheological properties (stress relaxation and creep) of polymer-aluminum composite specimens fabricated through the selective laser sintering (SLS) from a commercially available powder called Alumide. The rheological data predicted using the Maxwell-Wiechert and the Kelvin-Voigt models for stress relaxation and creep, respectively, were in agreement with the experimental results. The elastic moduli and dynamic viscosities were determined with high accuracy for both models. The findings of this study can be useful to designers and users of SLS prints made from the material tested.

Keywords: additive technology; creep; polymer materials; stress relaxation.