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

Laribi, Mohamed Amine; Tamboura, Sahbi; Fitoussi, Joseph; Bi, Ruiyang; Tcharkhtchi, Abbas; Dali, H. Ben

doi:10.1016/j.compositesb.2017.11.063

Cited by 25 publications

(47 citation statements)

References 34 publications

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“…However, a sole investigation of only interface fatigue or corrosion fatigue is a material property which can be accelerated by testing at higher frequency in adequate media. There is hence a growing interest in accelerated methodologies for determining a material's lifetime, particularly lifetime limited by corrosion, fatigue, or corrosion fatigue of bulk biomaterials [27]. Among the reasons to use low frequencies in the 1-3 Hz range in an artificial implant simulator test, is to avoid local temperature increase which eventually leads to proteins denaturation [13,28].…”

Section: Introductionmentioning

confidence: 99%

Corrosion fatigue in DLC-coated articulating implants: an accelerated methodology to predict realistic interface lifetime

Pardo

Ilic

Thorwarth

et al. 2019

Science and Technology of Advanced Materials

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We present a methodology to accelerate and estimate the lifetime of an interlayer under dynamic loading in body-like media. It is based on accelerating corrosion fatigue processes taking place at the buried interface of a Si-based adhesion-promoting interlayer in articulating implants on a CoCrMo biomedical alloy; the implants are coated with diamond-like carbon (DLC). The number of interface loading cycles to delamination is determined by reciprocal loading in corrosive fluid. Its dependence on the load is summarized in a Wöhler-like curve of a DLC/DLC-Si/CoCrMo system in body working conditions: cyclic stresses at 37°C in phosphate buffered saline (PBS). The presence of oxygen as a contaminant strongly affects the lifetime of the interface under corrosion fatigue. The main parameters acting on the prediction, with a special emphasis on simulated in vivo conditions, are analyzed and discussed: the media (PBS, Milli-Q water, NaCl, Ringers' solution and bovine calf serum), the load, the frequency and the composition of the interface determined by X-ray photoelectron spectroscopy.

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Section: Introductionmentioning

confidence: 99%

Corrosion fatigue in DLC-coated articulating implants: an accelerated methodology to predict realistic interface lifetime

Pardo

Ilic

Thorwarth

et al. 2019

Science and Technology of Advanced Materials

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“…The last stage is characterized by a drastic decline in stiffness due to rapid crack propagation leading to failure. The Analysis of the stiffness reduction during loading-unloading monotonic tests is used by several authors [7][8][9] to evaluate the macroscopic damage evolutions of SFRC. During the fatigue test, the dynamic modulus (slope of the stress-strain hysteresis) is commonly used as a damage indicator.…”

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confidence: 99%

Multi‐scale analysis of short glass fiber‐reinforced polypropylene under monotonic and fatigue loading

et al. 2020

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Short fiber-reinforced polypropylene is largely used in the automotive industry. Fatigue failure is one of the most failure modes observed in this class of materials. In order to better understand the damage mechanisms and plasticity evolution, this article provides an overall experimental investigation of the mechanical properties of a PPGF40 composite (polypropylene matrix reinforced by a 40% weight content of short glass fibers) including monotonic and cyclic loading. The effect of various parameters such as the loading direction, the strain rate, the temperature, and the fatigue are analyzed. The evolutions of the loss of stiffness and plastic strain during monotonic and fatigue tests are analyzed. Self-heating during cyclic loading is also studied. Moreover, the coupling effect of damage and plasticity is analyzed by plotting the evolution of the relative loss of stiffness vs the plastic strain increment for monotonic and cyclic loadings. For quasi-static loading, the results emphasize an intrinsic curve independent of the loading direction. Moreover, a sharp increase in the damage and plasticity levels due to the local effect occurring during cyclic loading is observed and correlated to SEM fracture surface analysis.

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“…As it is described in Table 2, several interrupted fatigue tests have been performed in order to generate different levels of fatigue damage. Contrary to Table 2, here, the latter is characterized by the macroscopic damage parameter D classically defined by D = 1 -E/E 0 [26]. Therefore, for each reached value of D, the evolution of the threshold stress versus strain rate can be determined experimentally.…”

Section: Analysis Of the Threshold Deviation Parameter Evolutionsmentioning

confidence: 99%

Effect of a Post-Fatigue Damage on the Residual Dynamic Behavior of Advanced-SMC Composites

et al. 2019

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The purpose of this article is to investigate the effect of an initial pre-damage induced by a fatigue loading on the tensile dynamic behavior of Advanced Sheet Molding Compounds (A-SMC). Tension-tension fatigue preloading at a frequency of 30 Hz is performed at various applied stress levels prior to subject the A-SMC specimens to tensile tests at different strain rates, namely: 10 −3 s −1 (quasi-static), 1 s −1 and 60 s −1 . The developed experimental approach provided significant findings in terms of residual behavior and damage accumulation in relation to the applied pre-fatigue loading conditions. Indeed, it has been shown that the overall quasi-static and the dynamic responses are strongly affected by the level of fatigue number of cycles reached prior to applying the high strain loading. The effect of fatigue predamage is found also strongly strain-rate dependent. Experimental results showed that the damage threshold in terms of stress and strain increased with strain rate. However, for a given strain-rate the damage stress threshold depends on the number of cycles applied during the fatigue preloading.

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

Cited by 25 publications

References 34 publications

Corrosion fatigue in DLC-coated articulating implants: an accelerated methodology to predict realistic interface lifetime

Corrosion fatigue in DLC-coated articulating implants: an accelerated methodology to predict realistic interface lifetime

Multi‐scale analysis of short glass fiber‐reinforced polypropylene under monotonic and fatigue loading

Effect of a Post-Fatigue Damage on the Residual Dynamic Behavior of Advanced-SMC Composites

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