Predicting yield stress of additively manufactured materials using composite theory

Abstract

Additive manufacturing has grown explosively in the past ten years, especially the use of Fused Filament Fabrication or Fused Deposition Modeling. These technologies have matured from being used for demonstration pieces to end use components. Combined with a significant increase in the variety of materials available, new possibilities have been opened with respect to its use. It has been shown through many studies that the material properties of Fused Filament Fabrication or Fused Deposition Modeling components vary highly with the parameters and settings used to produce them. There has been a growing effort to attempt to predict material properties from the parameters used to produce the material. In this work, a modified version of the Tsai-Hill criterion has been developed based on composite theory. The equations outlined in this work have been demonstrated through physical experimentation to be capable of predicting the yield stress of these materials to suitable accuracy.