Micromechanical consideration of interface damage in fiber reinforced Ti-alloy under various combined loading conditions

Explicit modeling the progressive interface damage in fibrous composite: Analytical vs. numerical approach

“…First, the RUC random geometry is generated and the model problem is solved under assumption that all the fibers perfectly bonded with matrix. Next, we evaluate local stress field and look for a point where the interface debonding stress criterion (e.g., [10,21]) K = ( max (r n , 0)/r c ) 2 + (s n /s c ) 2 reaches a maximum.…”

“…In the finite element model of FRC with imperfect bonding [9], an interfacial failure was simulated in terms of normal and tangential brittle-elastic springs. In the work [10], the finite element ''birth/death'' option was used for modeling the damage of the interface elements. The max stress failure criterion and the stiffness degradation technique have been 0266-3538/$ -see front matter Ó 2011 Elsevier Ltd. All rights reserved.…”

Simulation of interface damage in metal matrix composites under off-axis loading using cohesive zone model

“…Several interface models such as fully bonded [3,4], completely debonded [3,[5][6][7], stiff springs elements [8,9] and flexible interface [10,11] have been utilized in the earlier studies. In the present study, a weak interface is implemented by introducing the cohesive zone model along the boundary between the fiber and coating.…”

“…The springs between node pairs are released when the combination of normal and shear stresses at the nodes reaches a predefined criterion. This model is proceeded by similar recent studies to model the damage of the interface under transverse [10], combined [11] and axial shear loadings [12] with the effect of thermal residual stresses and fiber coating. Another model for considering the damage of the interface is the cohesive zone model.…”

Enhanced nonlinear inspection of diffusion bonded interfaces using reflected non-collinear ultrasonic wave mixing

“…Hidden subtle imperfections in diffusion bonds can greatly reduce the service life of fracture-critical components. Numerous studies have been investigating the physical characteristics of imperfect interfaces [1][2][3][4][5]. In partially well bonded components imperfect interfaces behave much like tight kissing bonds [6].…”