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Fracture behaviour of isotactic polypropylene under static loading condition
AbstractThe fracture mechanism of isotactic polypropylene has been studied by three- and four-point bending tests. The result of three-point bending test shows that a wide spread damage zone is present in front of the notch. Looking in more detail via cross-polarised light shows the evidence of birefringence in the stress-whitened zone. Increasing the applied load causes it to spread out the stress-whitened zone. Then the craze-like features are nucleated inside the stress-whitened region. The result of four-point bending test shows that craze-like damage appears in front of pre-crack and its propagation is dictated by spherulite microstructure.
Fracture behaviour of isotactic polypropylene under static loading condition
AbstractThe fracture mechanism of isotactic polypropylene has been studied by three- and four-point bending tests. The result of three-point bending test shows that a wide spread damage zone is present in front of the notch. Looking in more detail via cross-polarised light shows the evidence of birefringence in the stress-whitened zone. Increasing the applied load causes it to spread out the stress-whitened zone. Then the craze-like features are nucleated inside the stress-whitened region. The result of four-point bending test shows that craze-like damage appears in front of pre-crack and its propagation is dictated by spherulite microstructure.
Fracture behaviour of isotactic polypropylene under static loading condition
Zebarjad, S.M (author) / Bagheri, R (author) / Lazzeri, A (author) / Serajzadeh, S (author)
2002-11-19
5 pages
Article (Journal)
Electronic Resource
English
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