A probabilistic approach for transverse crack evolution in a composite laminate under variable amplitude cyclic loading

Ogi, Keiji; Yashiro, Shigeki; Niimi, Koji

doi:10.1016/j.compositesa.2009.11.005

Cited by 22 publications

(9 citation statements)

References 43 publications

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“…In this section, we employed the probabilistic SCG model of matrix cracking in a cross‐ply laminate established in the previous work [16–18]. It is assumed that the laminate consists of unit elements (length L e and volume V e ) that contain only one initial edge crack in the transverse ply, according to the concept of a characteristic damage state [27].…”

Section: Application Of Scg Models To Matrix Crackingmentioning

confidence: 99%

“…This equation leads to the conclusion that the crack propagation exponent n is independent of SCG model. The maximum stress in the transverse ply includes residual thermal stress σ

_{2}^{italicT}

[16–18].…”

Section: Application Of Scg Models To Matrix Crackingmentioning

confidence: 99%

“…Their model can predict matrix crack density for an arbitrary maximum stress. The authors have recently developed probabilistic models to predict matrix crack density in cross‐ply laminates with thick transverse plies under constant loading [16] and cyclic loading [17, 18] based on the probabilistic SCG concept. In their models, the stress intensity factor of a matrix crack depends on not only the applied stress but also the crack length, since they assumed SCG on a micron‐meter scale.…”

Section: Introductionmentioning

confidence: 99%

“…As a result, the effect of R on crack propagation is quite different between the two models. Model II was adopted in our previous study [16–18] because matrix cracking was expected to be a brittle failure mode. For mode I delamination propagation in CFRP laminates, Hojo et al [19, 20] employed the third model (Model III), which was originally proposed for aluminum alloy [21].…”

Section: Introductionmentioning

confidence: 99%

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Empirical models for matrix cracking in a CFRP cross‐ply laminate under static‐ and cyclic‐fatigue loadings

2011

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This paper presents empirical models for predicting matrix crack density in a carbon fiber reinforced plastic (CFRP) cross‐ply laminate under static‐fatigue and cyclic‐fatigue loadings. First, a modified slow crack growth (SCG) law, that covers the whole range of stress ratio R of tension‐tension fatigue (0 ≤ R ≤ 1), was proposed. The modified SCG law and three conventional SCG laws were then combined with Weibull's probabilistic failure concept for predicting fatigue matrix crack density in a cross‐ply laminate. Matrix crack density was expressed as a function of R, the maximum stress in the transverse ply and the number of cycles. Next, fatigue tests were performed for R of 0, 0.2, 0.4, 0.6, and 1 to determine the applicability of these four models. Finally, constant fatigue life (CFL) diagrams were investigated based on the modified model. POLYM. COMPOS., 2011. © 2011 Society of Plastics Engineers

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Section: Application Of Scg Models To Matrix Crackingmentioning

confidence: 99%

“…This equation leads to the conclusion that the crack propagation exponent n is independent of SCG model. The maximum stress in the transverse ply includes residual thermal stress σ

_{2}^{italicT}

[16–18].…”

Section: Application Of Scg Models To Matrix Crackingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Empirical models for matrix cracking in a CFRP cross‐ply laminate under static‐ and cyclic‐fatigue loadings

2011

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“…[30][31][32], where [32] measures the crack density indirectly by measuring the stiffness degradation. The key finding of the VA block loading study is that the crack density in GFRP is a suitable damage measurement variable for defining load-history dependent effects for a low-high sequence of VA block loading.…”

Section: Crack Density Evolution and Stiffness Degradationmentioning

confidence: 99%

Fatigue damage evolution in GFRP laminates with constrained off-axis plies

Glud¹,

Dulieu-Barton²,

Thomsen³

et al. 2017

Composites Part A: Applied Science and Manufacturing

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., "Fatigue damage evolution in GFRP laminates with constrained off-axis plies", Composites Part A, http://dx.doi. org/10.1016/j.compositesa.2017. method with a data mining approach and applying these to large data sets obtained during fatigue tests. It is shown that for a constant stress level, the stochastic nature of off-axis crack initiation and crack growth is accurately modelled by the Weibull distribution, with the distribution parameters being efficiently derived using the developed approach. The data-rich characterisation provides new insight in the crack density evolution process for VA and C-T loading, as well as derived Weibull distribution parameters in combination with the classical S-N curves and Paris' Law relationship.Hence, providing an improved approach that includes the stochastic and deterministic information for physically based modelling of crack density evolution for fatigue loading.Glud, J.A., Dulieu-Barton, J.M., Thomsen, O.T. and Overgaard, L.C.T., "Fatigue damage evolution in GFRP laminates with constrained off-axis plies", Composites Part A, http://dx

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Experimental Methods to Quantify Microdamage and Microstructure Anomalies in Fiber-Reinforced Polymer Composites: Overview

Saponara¹,

Elhajjar²

2014

Handbook of Damage Mechanics

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A probabilistic approach for transverse crack evolution in a composite laminate under variable amplitude cyclic loading

Cited by 22 publications

References 43 publications

Empirical models for matrix cracking in a CFRP cross‐ply laminate under static‐ and cyclic‐fatigue loadings

Empirical models for matrix cracking in a CFRP cross‐ply laminate under static‐ and cyclic‐fatigue loadings

Fatigue damage evolution in GFRP laminates with constrained off-axis plies

Experimental Methods to Quantify Microdamage and Microstructure Anomalies in Fiber-Reinforced Polymer Composites: Overview

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