Effect of temperature and strain rate on the constitutive behaviour of oriented polypropylene tubes

The lighter weight of thermoplastics compared with metals make these materials an attractive alternative for automotive structural components. In particular, oriented thermoplastic tubes, typically uniaxially or biaxially oriented by an extrusion process, possess increased strength along the orientation directions. In addition to their good strength, the ductility of these materials, when formed at elevated temperatures, is also improved. For …