Mixed-mode fracture toughness of a structural adhesive by the single-leg bending test

Loureiro, Fábio; Campilho, R.D.S.G.; Rocha, R.J.B.

doi:10.1016/j.prostr.2020.04.010

Cited by 1 publication

(2 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This choice is due to the need to take into account two important factors of interfacial fracture: first, the inevitable mixing of load modes in the process zone, which is a consequence of the impossibility of separating symmetric and skew-symmetric stress fields near the tip within the framework of the model of an open interfacial crack (Erdogan 1963;England 1965;Rice and Sih 1965;Rice 1988); secondly, the quasi-brittle mechanism of fracture of the bonding material, which assumes the commensurable contribution of tensile and shear stresses in the zone. The justification for using the Mises-Hill type strength criterion in the form (1) is its validity, demonstrated in studies of models of process zones near the tips of cracks in orthotropic plates under biaxial loading (Kaminskii et al 1995;Kaminsky et al 2011) and in some variants of the theory of interfacial failure of composites (Loureiro et al 2020;Kim and Hong 2018;Greco et al 2012;Turon et al 2006).…”

Section: Problem Statementmentioning

confidence: 99%

See 1 more Smart Citation

Analytical model of interface crack in bonding quasi-brittle material between distinct elastic media

Kaminsky,

Dudyk,

Chornoivan

2023

Preprint

View full text Add to dashboard Cite

The purpose of this work is to build an analytical model of an interfacial crack in piecewise homogeneous elastic bodies to predict the conditions of its initiation. The treatment is based on the concept of the process zone, which takes into account the existence of a local region with a high level of stresses and strains in the bonding material before the crack front. In the process zone, a quadratic strength criterion of the Mises-Hill type is assumed. The use of this criterion provides consideration of the quasi-brittle mechanism of the bonding material fracture. Using the Mellin integral transformation, the problem of calculating the parameters of the process zone in the bonding material at the tip of the interfacial crack within the framework of the proposed model is reduced to a vector functional equation, for which an exact analytical solution was found using the Wiener-Hopf method. From the solution found, a closed system of transcendental equations and relationships is derived for determining the length of the process zone, the phase angle of the load, and the energy release rate in the zone and the opening of the crack at its tip, which form an accessible algorithm for estimating the limit loads that precede propagation of the crack along the interface. Numerical analysis of the developed model is performed, and the possibility of its application in fracture studies of some composite materials is demonstrated.

show abstract

Section: Problem Statementmentioning

confidence: 99%

“…with powers n 1 , n 2 , which in some versions of this model are assumed equal to 1/2, 1 or 2 (Maiti and Geubelle 2005;Loureiro et al 2020;Paggi and Reinoso 2017;Suzuki et al 2013;Katsivalis et al 2020).…”

Section: Determination Of the Process Zone Parametersmentioning

confidence: 99%