Experimental and numerical investigation of the effects of stacking sequence and stress ratio on fatigue damage of glass/epoxy composites

Roundi, Walid; Mahi, Abderrahim El; Gharad, Abdellah El; Rebière, Jean-Luc

doi:10.1016/j.compositesb.2016.10.044

Cited by 51 publications

(27 citation statements)

References 20 publications

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“…where τ and σ are the shear and normal stresses derived from equation (5). σ 0 and τ 0 are interfacial strengths under normal and shear stress at the interface respectively.…”

Section: E0mentioning

confidence: 99%

“…Moreover, because of their heterogeneous architecture, anisotropic behavior and damage development, short fiber reinforcement composites SFRC structure design is very complex compared to homogeneous materials such as metals. Indeed, the mechanical properties of these materials were found to be greatly affected by their composition [1]: matrix type (thermoplastic or thermoset), volume fraction of reinforcing phase and their geometry and spatial distribution [2][3][4][5]. The diversity of composite material architectures and their complexity has for each application its own specificity.…”

Section: Introductionmentioning

confidence: 99%

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Fast fatigue life prediction of short fiber reinforced composites using a new hybrid damage approach: Application to SMC

Laribi

Tamboura

Fitoussi

et al. 2018

Composites Part B: Engineering

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Industrial design of Short Fiber Reinforced Composites (SFRC) structures is subject to several compounding and processing steps of optimization. Moreover, these structures are often submitted to fatigue loading. Therefore, SN curves have to be established for each new composite formulation and for several type of microstructure involved in the real component due to processing. While these preliminary characterizations are time and money consuming, this paper propose a new hybrid methodology for fast fatigue life prediction. Moreover, both monotonic and fatigue behavior of SMC composites is essentially determined by local damage propagation. Therefore, the key idea of the proposed approach is to use a Mori and Tanaka based micromechanical model in order to establish an equation of state relating local damage rate to macroscopic residual stiffness rate. The generalization of this relation to fatigue damage multi-scale description leads to the SN curve fast determination of each considered microstructure. Very limited experimental characterization is required in such a way that SN curve could be established in just one day. Comparison between experimental and simulated Whöler curves highlights a very good agreement for several microstructure configurations in the case of a SMC composite material.

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“…where τ and σ are the shear and normal stresses derived from equation (5). σ 0 and τ 0 are interfacial strengths under normal and shear stress at the interface respectively.…”

Section: E0mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Fast fatigue life prediction of short fiber reinforced composites using a new hybrid damage approach: Application to SMC

Laribi

Tamboura

Fitoussi

et al. 2018

Composites Part B: Engineering

View full text Add to dashboard Cite

show abstract

“…The importance of studying the effect of stress ratio R on the fatigue life of composite materials was highlighted by authors such as Huh et al 50 and Roundi et al 51 Most of the studies have focused either on Figure 19. (a) Loading, (b) equivalent von Mises stress, and (c) maximum principal stress for static analysis.…”

Section: Effect Of Stress Ratiomentioning

confidence: 99%

Statistical wind prediction and fatigue analysis for horizontal-axis wind turbine composite material blade under dynamic loads

Kulkarni

Dhoble

et al. 2017

Advances in Mechanical Engineering

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The purpose of this article is to analyze various wind speed-forecasting methods, select the appropriate method for developing synthetic wind speed for 1-year period at Salem in Tamilnadu state in India, and use it for the structural and fatigue analysis of a small horizontal-axis wind turbine blade made of composite material. Various forecasting models such as Markov chain, Kalman filter, and autoregressive integrated moving average are evaluated, and a long-term wind speed pattern at Salem is developed using Markov chain. This wind pattern is used to create time-varying loads using the blade element momentum on blade sections. Then, the fatigue analysis of the blade is carried out using the stress life approach. The blade is found to have available life of about 20 years and the critical area for fatigue is found on the skin near the root of the blade. Various blade skin materials are also compared for fatigue performance. A cohesive zone model of the adhesively joined root joint is also developed and analyzed for fatigue at the metal-composite joint. Thus, an integrated methodology involving high-fidelity modeling of the blade, wind forecasting, and static and fatigue analysis is developed for horizontal-axis wind turbine blade for locations where historically wind speed measurements are available for short time.

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“…They present a complicated behavior compared to homogeneous materials such as metals. Many parameters can affect the fatigue properties of composites [1]; fiber length and fiber orientation distribution [2], the reinforcement structure [3], loading and environmental conditions like temperature [4], cycling frequency [5], stress ratio [6], …).…”

Section: Introductionmentioning

confidence: 99%

Damage and fatigue life prediction of short fiber reinforced composites submitted to variable temperature loading: Application to Sheet Molding Compound composites

Tamboura

Laribi

Fitoussi

et al. 2020

International Journal of Fatigue

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The majority of fatigue life prediction models which have been proposed for the Short Fiber Reinforced Composite (SFRC) materials have been developed for constant temperature. However, in real situations, SFRC structures are subjected to variable temperature. This study focus on the response of SFRC composites subjected to different sequences (or blocks) under variable temperature conditions. Experientially, this kind of study requires a lot of investment from the point of view of cost and time. In this paper, the results coming from modelling the fatigue life and residual stiffness of short fiber reinforced composites subjected to thermomechanical loadings are reported. In fact, we propose to use a hybrid micromechanical-phenomenological model to quantify the evolution of the local damage rate during each loading block. Indeed, damage accumulation is calculated and cumulated step by step through the calculation of the evolution of a local damage ratio which describes the evolution of micro-cracks density until failure. Life prediction for specimens submitted to a variable temperature loading found to give acceptable results compared to experiments.

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Experimental and numerical investigation of the effects of stacking sequence and stress ratio on fatigue damage of glass/epoxy composites

Cited by 51 publications

References 20 publications

Fast fatigue life prediction of short fiber reinforced composites using a new hybrid damage approach: Application to SMC

Fast fatigue life prediction of short fiber reinforced composites using a new hybrid damage approach: Application to SMC

Statistical wind prediction and fatigue analysis for horizontal-axis wind turbine composite material blade under dynamic loads

Damage and fatigue life prediction of short fiber reinforced composites submitted to variable temperature loading: Application to Sheet Molding Compound composites

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