What is it about?
Creep involves several phenomena like viscoelasticity and viscoplasticity and damage. This paper provide a three-dimensional model for this. Creep for a polypropylene must include the point where creep changes from ductile to brittle rupture.
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Why is it important?
Polypropylene is one of the most used plastics and in many applications it is placed under a constant load. Here you need accurate models to predict the life time of the component.
Perspectives
Polypropylene is a semi crystalline polymer. there are others that in nature are similar to polypropylene. It will be interesting to study other materials and compare the model to their behavior.
Jesper de Claville Christiansen
Aalborg University
Read the Original
This page is a summary of: Creep failure of polypropylene: experiments and constitutive modeling, International Journal of Fracture, August 2009, Springer Science + Business Media,
DOI: 10.1007/s10704-009-9384-x.
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