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Fracture Behavior of Polypropylene under Dynamic Cutting and Shearing Action in Granulators
Author(s) -
Bauer W.,
Wüstenberg D.
Publication year - 2002
Publication title -
chemical engineering and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.403
H-Index - 81
eISSN - 1521-4125
pISSN - 0930-7516
DOI - 10.1002/1521-4125(20021105)25:11<1047::aid-ceat1047>3.0.co;2-6
Subject(s) - polypropylene , shearing (physics) , materials science , composite material , structural engineering , geotechnical engineering , engineering
The fracture behavior of polypropylene has been examined with a granulator‐like cutting test bench at rotor tangential velocities up to 40 m/s and rotor knife wedge angles of 30°, 55° and 80°. Depending on the wedge angle, the failure is either more due to tensile stresses or due to shear stresses. This has a significant influence on the necessary cutting energy. The fracture surface shows different zones of failure, which can be related to the actual cutting energy.