Statistical Life Time Prediction Under Tension Loading for Unidirectional CFRP with Thermoplastics as Matrices

Abstract

We have proposed the life prediction method for the statistical creep failure time under the tension loading along the longitudinal direction of unidirectional CFRP from the statistical static strengths of unidirectional CFRP measured at various temperatures. First, a method of predicting the statistical creep failure time of CFRP is explained briefly based on Christensen’s model of viscoelastic crack kinetics. Second, two types of unidirectional CFRP which consist of carbon fiber T300–3000 with thermosetting resin and thermoplastics as matrices, respectively. Third, the static strengths of these unidirectional CFRPs are experimentally and statistically measured at various temperatures. Then the creep failure times of these unidirectional CFRPs are predicted statistically using the statistical static strengths at various temperatures. Finally, the creep failure times of these unidirectional CFRPs are measured experimentally using these unidirectional CFRPs for comparison with the predicted ones.