B. Lauke et al., Calculation of adhesion strength at the interface of a coated particle embedded within matrix under multiaxial load, COMP MAT SC, 18(3-4), 2000, pp. 362-380
Analytical and finite element solutions of the stress fields around a parti
cle under multiaxial thermomechanical load are derived as functions of the
properties of the particle, the matrix and an interphase. The motivation fo
r these calculations is to answer the question of how to load a sample cont
aining a particle to measure the adhesion strength at the interfaces. The c
alculations provide the stress field and show that an interphase with a You
ng's modulus lower than that of the matrix reduces stress concentration in
the neighbourhood of the particle. The superposition of loads in different
directions results in the creation of a more or less uniform distribution o
f tensile stresses (hydrostatic tension) around the particle, a stress situ
ation that allows the determination of adhesion strength. The ratio of the
applied stresses in different directions determines the extension of the ar
ea which is under high tensile loads. This provides the basis to develop a
test technique for the examination of statistical effects which in addition
to the bonding quality may influence adhesion strength at interfaces. (C)
2000 Elsevier Science B.V. All rights reserved.