Generating Bone-Like Internal Structure in Arbitrary 3-D Models

Author(s):

Charles Epple, Aidan Fleischer, Ella Willetts, Sophia Knap, W. David Hairston, and Christopher G. Sinks

Abstract:

Operational environments continue to increase in complexity, increasing the breadth of Soldier exposure to novel risk. To understand and mitigate these risks, we require higher-complexity physical models. One area where current models fail to meet nascent requirements is correctly modeling trabecular bone. Here, we develop an algorithm to generate anatomically similar bone porosity toward these models. Through use of Blender software, we are able to create a Voroni matrix and apply it to arbitrary shapes with specific porosity gradients. We also calibrate the developed algorithm to account for errors encountered when 3-D printing these matrices, so the expected porosity aligns with the final part. Going forward, these models will allow us to create bone-like structures to examine physical and electromagnetic effects of battlefield conditions on tissue without putting Soldiers at risk.