ABSTRACT
Data obtained from an archived 9-year aging study on S5370 foam were used to develop a stress–strain aging model using a strategy that first fits separate stress–strain curve data based on a form from polymer science. Then, exploratory data analysis of the model coefficients from these separate fits was used to develop a full model. This article illustrates this strategy and demonstrates how the full model can be fit and subsequent predictions can be made.
ACKNOWLEDGMENTS
We thank C. C. Essix for her support and encouragement of this work. This work was funded by the National Nuclear Security Administration through the Enhanced Surveillance Campaign at Los Alamos National Laboratory. We thank an anonymous referee for helpful comments that improved the exposition of this article.