AFRL Challenge

Overview

The Air Force Research Laboratory (AFRL) Additive Manufacturing (AM) Modeling Challenge Series was a series of four challenges put on by the AFRL regarding the modeling of AM materials. Challenge 4 specifically required participants to predict the elastic strain tensors of specific target grains contained within an experimentally characterized Inconel 625 tensile coupon. My team consisting of Drs. Ashley Spear, Anthony Rollett, and Ricardo Lebensohn submitted the most accurate predictions compared to experimental measurements and won the top performer award. We achieved this result by using an elasto-viscoplastic fast Fourier transform (EVPFFT) crystal plasticity model that models the reversible and irreversible deformation processes that internally occur within materials.

Publication

For more detailed information, please see my published paper describing our challenge submission via the following link: https://rdcu.be/ckNhp

C. K. Cocke, A. D. Rollett, R. A. Lebensohn, A. D. Spear, "The AFRL Additive Manufacturing Modeling Challenge: Predicting Micromechanical Fields in AM IN625 Using an FFT-Based Method with Direct Input from a 3D Microstructural Image," Integrating Materials Manufacturing and Innovation, 2021. https://doi.org/10.1007/s40192-021-00211-w

Press releases

Additionally, the following press releases can be referenced for more information about the challenge and our specific problem:
America Makes Press Release
University of Utah Press Release
Carnegie Mellon Press Release

Other Projects

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Heat Sink Design Challenge

My team's competition-winning natural convection heat sink design for the 2021 ASME/IEEE Heat Sink Design Challenge

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Keyboard Design

A personal project where I built a keyboard numpad entirely from the ground up

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