Calculation of stress intensity factors for an interfacial notch of a bi-material joint using photoelasticity

Abstract

In this paper, the stress intensity factors (SIFs) for an interfacial notch in a bi-material joint have been calculated using the experimental method of photoelasticity. A bi-material Brazilian disc specimen with a central interface notch was employed to determine the SIFs for different mode mixities. In this approach, SIFs were calculated experimentally for an Al/Polycarbonate bi-material Brazilian disc specimen and two different loading angles (i.e. modes I and II dominated loading conditions). The results of experimental approach were then compared with the numerical values of finite element method. Experimental results were in good consistency with the numerical values.

Evaluation of interfacial bond strength between Portland cement concrete and asphalt concrete layers using bi-material SCB test specimen

“…The interface cracks are often subjected to mixed mode loading conditions, because of the asymmetry in material property at the interface, and they may propagate through the interface, or may kink into one of the materials in the strong interfaces (e.g. Arabi et al, 2013;Ayatollahi et al, 2010a,b;Chandra Kishen & Singh, 2001;Dunn et al, 2000;Mirsayar, 2013Mirsayar, , 2014a.…”

Three Dimensional Investigation of Mode I Stress Intensity Factor Variations in Crack Front Using Finite Element Method

“…For these kind of materials, the stress intensity factors and sometimes higher order terms of the Williams (1952) series expansion are considered as the fracture parameters to characterize elastic stress field around crack tip. The coefficients of the Williams series expansion are calculated so far by many researchers to study the effect of each term on the stress distribution adjacent the crack tip at both homogeneous and bi-material media (Ayatollahi et al, 2010;2011;2013;Mirsayar, 2013;2014a;2014b;Mirsayar et al, 2014;Ravichandran and Ramesh, 2005). However, it is well-known that the singular stress field, first and the second term of the stress field, are often more important than higher order terms at the crack tip regions.…”

Factors influencing stresses and movements in continuously reinforced concrete pavements – A review

“…In other words, this movement can be analyzed using an interfacial fracture model. The process of crack initiation and propagation at the interface of two dissimilar materials (He & Hutchinson, 1989;Hurd et al, 1995;Martin et al, 2001;Evans et al, 1990;Ayatollahi et al, 2010a;Mirsayar, 2014a;Campilho et al, 2011;Álvarez et al, 2014; and in different engineering materials (Arabi et al,74 2013; Ayatollahi et al, 2010bAyatollahi et al, , 2013Mirsayar, 2013Mirsayar, , 2014bMirsayar, ,c, 2015aMirsayar, ,b, 2017Mousavi & Aliha 2016;Mohammad Aliha et al 2017;Mirsayar et al, , 2017aMirsayar & Park, 2015Mirsayar & Takabi, 2016;Razmi & Mirsayar, 2017) has widely been studied in the past. Depending on the bond strength, the mechanism of interfacial crack propagation can be classified into two types: strong interfaces, and weak interfaces.…”