Stresses during thermoset cure
- Sandia National Laboratories, Albuquerque, New Mexico87185 (United States)
Production problems attributed to excessive stresses generated during the cure of epoxies led us to develop a formalism to predict these stresses. In our first studies, we developed a fundamental understanding of the complex evolution of viscoelasticity as the cure progresses. We then incorporated these results into a proper tensorial constitutive equation that was integrated into our finite element codes and validated using more complicated geometries, thermal histories, and strain profiles. The formalism was then applied to the original production problem to determine cure schedules that would minimize stress generation during cure. During the pursuit of these activities, several interesting and puzzling phenomena were discovered that have stimulated further investigation. {copyright} {ital 1998 Materials Research Society.}
- Research Organization:
- Sandia National Laboratory
- DOE Contract Number:
- AC04-94AL85000; AC04-76DP00789
- OSTI ID:
- 664855
- Journal Information:
- Journal of Materials Research, Journal Name: Journal of Materials Research Journal Issue: 3 Vol. 13; ISSN JMREEE; ISSN 0884-2914
- Country of Publication:
- United States
- Language:
- English
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