Viscoelastic behavior and lifetime (durability) predictionsA method for lifetime or durability predictions for laminated fiber reinforced plastics is given. The procedure is similar to but not the same as the well known time-temperature-superposition principle for polymers. The method is better described as an analytical adaptation of time-stress-super-position methods. The analytical constitutive modeling is based upon a nonlinear viscoelastic constitutive model developed by Schapery. Time dependent failure models are discussed and are related to the constitutive models. Finally, results of an incremental lamination analysis using the constitutive and failure model are compared to experimental results. Favorable results between theory and predictions are presented using data from creep tests of about two months duration.
Document ID
19860062164
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Brinson, R. F. (Virginia Polytechnic Institute and State University Blacksburg, United States)