Schrader, PeerPeerSchraderSchmidt, AlexanderAlexanderSchmidtSchlenz, Maximiliane A.Maximiliane A.SchlenzKolling, StefanStefanKollingWöstmann, BerndBerndWöstmannBerlinger, MarcelMarcelBerlinger2023-11-142023-11-142023https://jlupub.ub.uni-giessen.de/handle/jlupub/18621http://dx.doi.org/10.22029/jlupub-17985An insight into the fracture behavior of dental polymer-based biomaterials is important to reduce safety hazards for patients. The crack-driven fracture process of polymers is largely stochastic and often dependent on the loading rate. Therefore, in this study, a statistical model was developed based on three-point bending tests on dental polymethyl methacrylate at different loading rates. The fracture strains were investigated (two-parameter Weibull distribution (2PW)) and the rate-dependency of the 2PW parameters were examined (Cramér-von Mises test (CvM)), arriving at the conclusion that there could be a limiting distribution for both quasi-static and dynamic failure. Based on these findings, a phenomenological model based on exponential functions was developed, which would further facilitate the determination of the failure probability of the material at a certain strain with a given strain rate. The model can be integrated into finite element solvers to consider the stochastic fracture behavior in simulations.enIn CopyrightBiocompatible materialsWeibull statisticsDental materialsFracture strainStatistical modelsddc:610