Mixed-mode delamination fracture in laminated composites

Chatterjee, Saikat; Dick, William A.; Pipes, R. Byron

doi:10.1016/0266-3538(86)90020-5

Cited by 35 publications

(12 citation statements)

References 11 publications

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“…In the sub-laminate models available in the literature, the first-order shear deformable beam/plate theory is used, in which the effects of interface peel and shear stresses on the crack tip deformation of the beam are ignored (Chatterjee et al, 1986). As a matter of fact, there exists severely concentrated peel and shear stresses along the interface near the crack tip due to the edge effect (Wang and Qiao, 2004b).…”

Section: Novel Interface Deformable Bi-layer Beam Theorymentioning

confidence: 99%

“…Better accuracy can be achieved by modeling each sub-beam (or sub-laminate) with a higher order beam theory or with more sub-layers. The later approach is referred as multi-sub-layer model since more than two sub-layers are considered, such as proposed by Chatterjee et al (1986) and Chatterjee and Ramnath (1988) in their study on the mixed mode delamination in composite materials. Improved results could be obtained by this method on interlaminar stress and energy release rate of delamination in composites if more sub-layers were used in the model.…”

Section: Introductionmentioning

confidence: 99%

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Mechanics and fracture of crack tip deformable bi-material interface

Qiao

Wang

2004

International Journal of Solids and Structures

101

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Section: Novel Interface Deformable Bi-layer Beam Theorymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Mechanics and fracture of crack tip deformable bi-material interface

Qiao

Wang

2004

International Journal of Solids and Structures

101

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“…The above equations (3)(4)(5)(6)(7)(8) are applicable only in the delaminated region (0 ~< x ~< a). In the bonded region (a < x ~< 2L), the governing equations may be written as follows for the whole laminate: For equilibrium…”

Section: (Lo)mentioning

confidence: 99%

“…In some instances, the delamination alone may be the strength limiting factor. For this reason, various studies reported in the literature have dealt with the determination of material properties, such as delamination fracture toughness, crack growth resistance curves and crack growth laws under cyclic loading [1][2][3][4][5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Analysis of stitched laminated ENF specimens for interlaminar mode II fracture toughness

Jain¹,

Mai

1994

Int J Fract

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Two simple micromechanics based models are proposed to predict the effect of through-thickness reinforcement (stitching) on the improvement of delamination crack growth resistance in end-notched flexure (ENF) specimens. In the first model, it is assumed that stitches stretch elastically and then rupture when the load carried approaches the failure load. In the second model, it is assumed that stitches are discontinuous and that the stitch thread-matrix interface is completely frictional. Approximate closed form solutions for energy release rates are obtained, and the effects of stitch density, matrix-stitch thread interfacial shear stress, stitch thread diameter, volume fraction of stitches, critical energy release rate and Young's modulus are then examined. A simple design study for sizing the ENF specimen to minimise geometric nonlinear response is presented. The influences of interlaminar shear deformation and friction between the crack surfaces on the strain energy release rate are examined.

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“…Williams, et al [2] and Chatterjee, et al [3] have analysed the delamination behaviour using the energy release rate approach. Williams, et al [2] and Chatterjee, et al [3] have analysed the delamination behaviour using the energy release rate approach.…”

Section: Introductionmentioning

confidence: 99%

Optimum Design of Composite Laminates against Delamination by Ranking

Issac

Rao

1992

Journal of Reinforced Plastics and Composites

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In this paper, we describe a method for the optimum design of fibre reinforced composite laminates against delamination. The software developed based on this method designs laminates so that they are not susceptible to delamination when subjected to a bi-cubic distribution of inplane and/or bending loads. The laminated plate which is made of repeated sublaminates is assumed to be thin and of symmetric construction. Various layup schemes are evaluated based on the classical plate theory and quadratic delamination criterion for the interlaminar stresses developed in the laminate under loading conditions. The optimum layup sequence which exhibits the least propensity to delaminate and the number of sublaminates required are obtained Further, a ply-drop round-off scheme is adopted to arrive at an optimum laminate thickness. As an example, a family of 0/90/45/—45 bi-directional lamination schemes are examined for different types of loads and the gains in optimising the ply orientations in a sublaminate are demonstrated.

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Mixed-mode delamination fracture in laminated composites

Cited by 35 publications

References 11 publications

Mechanics and fracture of crack tip deformable bi-material interface

Mechanics and fracture of crack tip deformable bi-material interface

Analysis of stitched laminated ENF specimens for interlaminar mode II fracture toughness

Optimum Design of Composite Laminates against Delamination by Ranking

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