Paper Title:

Characterization of the Fracture and Fatigue Behavior of Thermoplastic Elastomer Materials

Periodical Key Engineering Materials (Volumes 417 - 418)
Main Theme Advances in Fracture and Damage Mechanics VIII
Edited by M.H Aliabadi, S. Abela, S. Baragetti, M. Guagliano and Han-Seung Lee
Pages 789-792
DOI 10.4028/www.scientific.net/KEM.417-418.789
Citation Zoltan Major et al., 2009, Key Engineering Materials, 417-418, 789
Online since October, 2009
Authors Zoltan Major, Mikel Isasi, Thomas Schwarz
Keywords Crack Tip Blunting, Fatigue Behaviour, Fracture Behaviour, Influence of the Test Frequency, Tearing Energy, Thermoplastic Elastomer
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Abstract

Thermoplastic elastomers are a relatively new group of engineering materials and are increasingly used in various technical applications (i.e., seals, gaskets, damping elements, and membranes) where the fatigue resistance plays an important role. The fracture behavior of elastomers is often characterized using the tearing energy concept, T. However, hardly any data are available for these types of materials. Hence, an unfilled and a filled thermoplastic polyurethane (TPU) type were investigated under cyclic loading conditions. The pure shear specimen configuration was used in the experimental part of this study. Crack growth kinetics curves were determined and the cycle number and the tests frequency dependence of these curves investigated. While a stable crack growth process was observed at 2 Hz the crack growth became unstable above specific test amplitude at 10 Hz.