Essential work of fracture and viscoplastic response of a carbon black-filled thermoplastic elastomer |
| |
Authors: | A.D. Drozdov S. Clyens J. Christiansen |
| |
Affiliation: | Danish Technological Institute, Gregersensvej 1, DK-2630 Taastrup, Denmark |
| |
Abstract: | Observations are reported on a carbon black-filled thermoplastic elastomer in uniaxial cyclic tensile tests with various maximum strains and double-edge-notched-tensile (DENT) tests with various ligament widths at ambient temperature. It is shown that the stress-strain diagrams in DENT tests measured relatively far away from the ligament coincide with those in tensile cyclic tests on un-notched samples. To describe the viscoplastic response of un-notched specimens, constitutive equations are derived, and adjustable parameters are found by fitting the experimental data. It is demonstrated how the energy stored in a DENT sample under tension can be accounted for in calculations of the specific essential work of fracture. |
| |
Keywords: | Polymer matrix composites Constitutive modelling EWF concept Viscoplasticity Strain rate effects |
本文献已被 ScienceDirect 等数据库收录! |