Modeling & Simulation (Page 3)

EWI has recently developed a new technique to obtain improved accuracy in material flow stress for modeling metal forming processes. The method uses the hydraulic bulge test (HBT) and digital image correlation (DIC) analysis and applies the plastic work equivalency principle to determine an optimal arc length for the for calculation of a biaxial flow...

Common aerospace materials such as high-nickel alloys (such as René 80) or high-strength aluminum alloys (6000 and 7000 series) are not currently manufactured using additive manufacturing (AM) due to hot cracking.  As part of a $5M Department of Energy program, EWI, GE Research, and the University of South Carolina developed a model to predict and...

Integrated computational materials engineering (ICME) can be used effectively to understand thermal excursions and mechanical response in single-shot joining methods such as resistance-spot, flash-butt, friction, hot-gas, and thermite welding. As part of EWI’s ongoing series of papers examining the uses of ICME as a prediction tool in manufacturing, Senior Technology Leader Jerry Gould has written...