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Conference Paper

Fracture behaviors of the rolled isotactic polypropylene


Raabe,  Dierk
Microstructure Physics and Alloy Design, Max-Planck-Institut für Eisenforschung GmbH, Max Planck Society;

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Jia, J., Liu, S., & Raabe, D. (2014). Fracture behaviors of the rolled isotactic polypropylene. In Applied Mechanics and Materials (pp. 237-241). Zürich, Switzerland: Trans Tech Publications Ltd.

Cite as: https://hdl.handle.net/21.11116/0000-0001-C143-9
The mechanical properties of the rolled isotactic polypropylene and the morphology of fracture surfaces were measured and observed by tensile tests and the scanning electron microscopy. And then the tensile fracture behaviors along the rolling and transvers directions of the rolled samples were analyzed. After rolling, strong anisotropy mechanical properties occurred along the rolling and transverse directions: high tensile strength with low total elongation along the rolling direction and low tensile strength with high total elongation along the transverse direction. After tensile test, three characteristic structures were found on the fracture surfaces. The tensile fracture behavior of the rolled samples is: stress concentration happens on the edge of tensile sample and then fracture develops to the center part of the tensile sample. When the fracture is big enough, the tensile sample will be failed very quickly. © (2014) Trans Tech Publications, Switzerland.