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Micromechanical analysis of a model for particulate composite materials with composite particles—survey of craze initiation
Author(s) -
Riccò T.,
Pavan A.,
Danusso F.
Publication year - 1978
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.760181007
Subject(s) - materials science , composite material , particle (ecology) , composite number , core (optical fiber) , polar , phase (matter) , shell (structure) , concentric , matrix (chemical analysis) , polymer , particle size , geometry , chemical engineering , physics , oceanography , mathematics , quantum mechanics , astronomy , geology , engineering
Abstract Particulate‐filled materials consisting of a continuous matrix phase and a discontinuous filler phase made up of discrete heterogeneous particles are simulated by an elementary model consisting of a single spherical particle embedded in an infinite matrix, the particle being constituted by a spherical core within a concentric spherical shell. The specific case studied is one in which the particle core and matrix are of the same glassy polymer, and particle shell is a rubbery material. The distributions of six suggested craze initiation factors in the region surrounding the single particle are calculated when the material is subjected to a uniform uniaxial tension at infinity. Results indicate that the critical regions for craze formation are located either at the pole or at the equator of the particle (the polar axis being parallel to the applied tension), depending on the criterion considered and on the relative size of the glassy core in the particle.