Effects of Thickness,Deformation Rate and Energy Partitioning on the Work of Fracture Parameters of uPVC Films |
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Authors: | M Ll Maspoch J Gámez-Pérez J Karger-Kocsis |
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Affiliation: | 1.Centre Català del Plàstic. Universitat Politécnica de Catalunya (UPC).C/Colon 114, 08222 Terrassa, Spain,ES;2.Institut für Verbundwerkstoffe GmbH, Universit?t Kaiserslautern, PF 3049, 67653 Kaiserslautern, Germany,DE |
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Abstract: | Summary
Unplasticised poly(vinyl chloride) (uPVC) films have been tested using the essential work of fracture (EWF) method. Influence
of loading rate and film thickness on the tensile properties and work of fracture parameters was evaluated. In addition, energy
partition analyses were carried out applying two different approaches (“yielding” and “initiation”), which differ in the treatment
of the stored elastic energy. Results showed less effect of the film thickness and deformation rate (<l00 mm/min) on the EWF
terms. On the other hand, the specific essential work of fracture (w
e) at high load rate (1.2 m/s) approached the yielding-related term (w
e,y) obtained at static loading rates (<l00 mm/min).
Received: 16 July 2002/Revised version: 31 March 2003/Accepted: 29 April 2003
Correspondence to M. Ll. Maspoch |
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Keywords: | |
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