Stiffness degradation resulting from 90° ply cracking in angle-ply composite laminates

B. Pradhan; N. Venu Kumar; N. S. Rao

doi:10.1016/S0266-3538(99)00021-4

Stiffness degradation resulting from 90° ply cracking in angle-ply composite laminates

B. Pradhan, N. Venu Kumar, N. S. Rao

Research output: Contribution to journal › Article › peer-review

26 Scopus citations

Abstract

Stiffness degradation resulting from 90° ply cracking in [±θ_n/90_m]s angle-ply composite laminates has been evaluated by a 3D finite-element method. A control volume having a single simulated transverse crack in 90° ply/plies and intact ±θ outer layers is used for the analysis. The stiffness degradation as a transverse crack extends in the width direction for glass/epoxy angle-ply laminates is calculated for different crack lengths and different fibre orientation angles θ of the outer layers. Effects of the number of 90° layers and number of ±θ layers on the laminate stiffness have also been studied. It has been observed that the available stiffness of the cracked angle-ply laminate largely depends on the fibre orientation angle of the outer layers, the number of cracked cross-ply layers and the number of uncracked outer ±θ layers in the laminate.

Original language	English
Pages (from-to)	1543-1552
Number of pages	10
Journal	Composites Science and Technology
Volume	59
Issue number	10
DOIs	https://doi.org/10.1016/S0266-3538(99)00021-4
State	Published - Aug 1999
Externally published	Yes

Keywords

Angle-ply laminates
C. Transversing cracks
Fibre angle
Finite element method
Stiffness degradation

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10.1016/S0266-3538(99)00021-4

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title = "Stiffness degradation resulting from 90° ply cracking in angle-ply composite laminates",

abstract = "Stiffness degradation resulting from 90° ply cracking in [±θn/90m]s angle-ply composite laminates has been evaluated by a 3D finite-element method. A control volume having a single simulated transverse crack in 90° ply/plies and intact ±θ outer layers is used for the analysis. The stiffness degradation as a transverse crack extends in the width direction for glass/epoxy angle-ply laminates is calculated for different crack lengths and different fibre orientation angles θ of the outer layers. Effects of the number of 90° layers and number of ±θ layers on the laminate stiffness have also been studied. It has been observed that the available stiffness of the cracked angle-ply laminate largely depends on the fibre orientation angle of the outer layers, the number of cracked cross-ply layers and the number of uncracked outer ±θ layers in the laminate.",

keywords = "Angle-ply laminates, C. Transversing cracks, Fibre angle, Finite element method, Stiffness degradation",

author = "B. Pradhan and {Venu Kumar}, N. and Rao, {N. S.}",

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T1 - Stiffness degradation resulting from 90° ply cracking in angle-ply composite laminates

AU - Pradhan, B.

AU - Venu Kumar, N.

AU - Rao, N. S.

PY - 1999/8

Y1 - 1999/8

N2 - Stiffness degradation resulting from 90° ply cracking in [±θn/90m]s angle-ply composite laminates has been evaluated by a 3D finite-element method. A control volume having a single simulated transverse crack in 90° ply/plies and intact ±θ outer layers is used for the analysis. The stiffness degradation as a transverse crack extends in the width direction for glass/epoxy angle-ply laminates is calculated for different crack lengths and different fibre orientation angles θ of the outer layers. Effects of the number of 90° layers and number of ±θ layers on the laminate stiffness have also been studied. It has been observed that the available stiffness of the cracked angle-ply laminate largely depends on the fibre orientation angle of the outer layers, the number of cracked cross-ply layers and the number of uncracked outer ±θ layers in the laminate.

AB - Stiffness degradation resulting from 90° ply cracking in [±θn/90m]s angle-ply composite laminates has been evaluated by a 3D finite-element method. A control volume having a single simulated transverse crack in 90° ply/plies and intact ±θ outer layers is used for the analysis. The stiffness degradation as a transverse crack extends in the width direction for glass/epoxy angle-ply laminates is calculated for different crack lengths and different fibre orientation angles θ of the outer layers. Effects of the number of 90° layers and number of ±θ layers on the laminate stiffness have also been studied. It has been observed that the available stiffness of the cracked angle-ply laminate largely depends on the fibre orientation angle of the outer layers, the number of cracked cross-ply layers and the number of uncracked outer ±θ layers in the laminate.

KW - Angle-ply laminates

KW - C. Transversing cracks

KW - Fibre angle

KW - Finite element method

KW - Stiffness degradation

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DO - 10.1016/S0266-3538(99)00021-4

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JF - Composites Science and Technology

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ER -

Stiffness degradation resulting from 90° ply cracking in angle-ply composite laminates

Abstract

Keywords

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