Coupled effect of loading frequency and amplitude on the fatigue behavior of advanced sheet molding compound (A-SMC)

Shirinbayan, Mohammadali; Fitoussi, Joseph; Meraghni, Fodil; Surowiec, Benjamin; Laribi, Mohamed Amine; Tcharkhtchi, Abbas

doi:10.1177/0731684416682853

Cited by 24 publications

(55 citation statements)

References 24 publications

(47 reference statements)

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“…A previous study has emphasized the influence of amplitude and frequency on self-heating phenomenon developed by A-SMC composites during fatigue [25]. In order to reproduce the real conditions of use in automobile structures, fatigue tests were carried out at a frequency of 30 Hz.…”

Section: Thermal and Damage Effectsmentioning

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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Section: Thermal and Damage Effectsmentioning

confidence: 99%

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

et al. 2019

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“…On the other hand, high strength to weight ratio for materials used in the automotive industry is an essential factor. [1][2][3] Sheet molding compounds (SMCs) have wide application fields in aerospace, agricultural, rail and marine, and building and construction, but SMCs fabrication has been motivated mostly by the automotive industry. 2,4 Moreover, among the advantages of SMCs, the ability to adjust their formulations is very interesting.…”

Section: Introductionmentioning

confidence: 99%

“…[1][2][3] Sheet molding compounds (SMCs) have wide application fields in aerospace, agricultural, rail and marine, and building and construction, but SMCs fabrication has been motivated mostly by the automotive industry. 2,4 Moreover, among the advantages of SMCs, the ability to adjust their formulations is very interesting. [5][6][7] The composite matrix of SMCs is a combination of polyester, vinylester or epoxy as a thermosetting resin, fillers such as alumina, calcium carbonate, and thickeners, referred to as additives.…”

Section: Introductionmentioning

confidence: 99%

“…[5][6][7] The composite matrix of SMCs is a combination of polyester, vinylester or epoxy as a thermosetting resin, fillers such as alumina, calcium carbonate, and thickeners, referred to as additives. [1][2][3][4][5][6][7][8] A variety of fiber reinforcement can be used including glass or carbon fibers with a volume fraction between 10% and 65%.…”

Section: Introductionmentioning

confidence: 99%

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Multiscale damage analysis of the tension‐tension fatigue behavior of a low‐density sheet molding compound

Shirinbayan

2020

J of Applied Polymer Sci

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This article presents the experimental findings of tension-tension stresscontrolled fatigue tests performed on low-density sheet molding compound (LD-SMC). LD-SMC composite is a type of SMC including a polyester resin reinforced with chopped glass fibers bundles and hollow glass spheres. The coupled frequency-amplitude affects the nature of the overall fatigue response, which can be controlled by the damage mechanisms accumulation and/or by the self-heating. In fact, the self-heating produced a material softening and decreased the fatigue lifetime. For fatigue loading at 80 Hz, self-heating has been observed and yielded to a temperature rise to 65 C, which is more than a glass transition temperature of polyester. Thus, the polyester matrix is subjected to remarkable thermally activated modifications of its physical state. Multiscale damage analysis of the randomly-oriented sample in fatigue showed that the first observed damage phenomenon corresponds to the debonding of the hollow glass microspheres occurring in the fiber depleted zones.

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“…Sheet molding compounds (SMC) are fiber-reinforced thermoset polymer matrix semi-finished products obtained by a thermocompression process (Whelan and Goff, 1990;Mallick, 2007;Orgéas and Dumont, 2012;Lamanna and Ceparano, 2014;Schladitz et al, 2017;Shirinbayan et al, 2017). Since the last two decades, these composites represent an ideal choice for large structural automotive components due to their high strength-to-weight ratio.…”

Section: Introductionmentioning

confidence: 99%

Hierarchical micromechanical modeling of the viscoelastic behavior coupled to damage in SMC and SMC-hybrid composites

Anagnostou

Chatzigeorgiou

Chemisky

et al. 2018

Composites Part B: Engineering

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is an open access repository that collects the work of Arts et Métiers ParisTech researchers and makes it freely available over the web where possible. AbstractThe aim of this paper is to study, through a multiscale analysis, the viscoelastic behavior of glass reinforced sheet molding compound (SMC) composites and SMC-hybrid composites mixing two types of bundle reinforcement: glass and carbon fibers. SMC exhibit more than two distinct characteristic length scales, so that a sequence of scale transitions is required to obtain the overall behavior of the composite. An analytical procedure is used consisting of properly selected well-established micromechanical methods like the Mori-Tanaka (MTM) and the composite cylinders (CCM) accounting for each scale transition. After selecting a representative volume element (RVE) for each scale, the material response of any given length scale is described on the basis of the homogenized behavior of the next finer one. This hierarchical approach is appropriately extended to the viscoelastic domain to account for the time dependent overall response of the SMC composite material. The anisotropic damage has been introduced through a micromechanical model considering matrix penny-shape microcrack density inside bundles. The capabilities of the hierarchical modeling are illustrated with various parametric studies and simulation of experimental data for glass-based SMC composites.

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Coupled effect of loading frequency and amplitude on the fatigue behavior of advanced sheet molding compound (A-SMC)

Cited by 24 publications

References 24 publications

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

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

Multiscale damage analysis of the tension‐tension fatigue behavior of a low‐density sheet molding compound

Hierarchical micromechanical modeling of the viscoelastic behavior coupled to damage in SMC and SMC-hybrid composites

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