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Stresses during thermoset cure

Published online by Cambridge University Press:  31 January 2011

Douglas B. Adolf ,
James E. Martin ,
Robert S. Chambers ,
Steven N. Burchett  and
Thomas R. Guess
Douglas B. Adolf
Affiliation:
Sandia National Laboratories, Albuquerque, New Mexico 87185
James E. Martin
Affiliation:
Sandia National Laboratories, Albuquerque, New Mexico 87185
Robert S. Chambers
Affiliation:
Sandia National Laboratories, Albuquerque, New Mexico 87185
Steven N. Burchett
Affiliation:
Sandia National Laboratories, Albuquerque, New Mexico 87185
Thomas R. Guess
Affiliation:
Sandia National Laboratories, Albuquerque, New Mexico 87185
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Abstract

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.

Type
Articles
Information
Journal of Materials Research , Volume 13 , Issue 3 , March 1998 , pp. 530 - 550
Copyright
Copyright © Materials Research Society 1998

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References

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