Title: THERMAL AND MECHANICAL COUPLINGS IN PLAIN AND WOOD FIBRE REINFORCED POLYPROPYLENE DURING TENSILE AND FRACTURE TESTS
Page Range: p.453-462
Author(s): Dupre J-C; Lagattu F
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Journal: Polymers and Polymer Composites
Issue Year: ppc
Volume: 15
Issue No: No.6
Abstract
Spruce fibres were incorporated into a PP homopolymer in a twin-screw extruder and the effect of the fibres on the PP investigated using a thermomechanical approach. Simultaneous measurements were made of the strain field and thermal field and mechanical damage studied in both tensile and fracture tests. Whole-field strain measurements were obtained using the digital image correlation method and the thermal field obtained with the aid of an infrared camera. The heat equation established in the context of classical thermodynamics of irreversible processes was used to evaluate the heat sources and fracture behaviour before crack propagation and crack propagation in the composites discussed. 26 refs.
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