Premium
Essential work of fracture of rubber‐modified polyamide 6 in impact
Author(s) -
Lievana Emiliano,
Bernal Celina,
Frontini Patricia
Publication year - 2004
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.20171
Subject(s) - materials science , charpy impact test , polyamide , composite material , fracture (geology) , natural rubber , fracture toughness , fracture mechanics , work (physics) , toughness , engineering , mechanical engineering
In this paper the impact fracture behavior of two commercial, 10% and 25%, rubber‐modified polyamide 6 grades is investigated by the Essential Work of Fracture methodology, which implies the testing of a series of samples of different ligament lengths and the determination of the total fracture energy. The study is based on data obtained from specimens made either from thick injected plates or bars. Tests were carried out under Charpy and Izod configuration. Two modes of fracture were displayed by the blends: ductile fracture or mixed mode depending on rubber content, processing conditions and ligament lengths of the samples. When samples displayed completely stable crack propagation behavior and geometric similarity of load‐displacements diagrams, an essential work of fracture value w Ie , independent of specimen thickness and testing configuration, could be extrapolated. Polym. Eng. Sci. 44:1707–1715, 2004. © 2004 Society of Plastics Engineers.