Modelling and characterisation of dynamic behaviour of short-fibre-reinforced composites

Nciri, Mariem; Notta‐Cuvier, Delphine; Lauro, Franck; Chaari, Fahmi; Maalej, Yamen; Zouari, Bassem

doi:10.1016/j.compstruct.2016.10.083

Cited by 21 publications

(8 citation statements)

References 42 publications

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“…The effects of strain rates on mechanical properties of short GFRT (SGFRT) composite were investigated in several works [11][12][13][14][15]. The previous results indicated that the composite was a strain rate-dependent material, and its tensile strength and stiffness increased with the increasing of the strain rates.…”

Section: Introductionmentioning

confidence: 99%

The Effects of Strain Rates on Mechanical Properties and Failure Behavior of Long Glass Fiber Reinforced Thermoplastic Composites

Cui

Wang

et al. 2019

Polymers

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Long glass fiber reinforced thermoplastic composites have been increasingly used in automotive parts due to their excellent mechanical properties and recyclability. However, the effects of strain rates on the mechanical properties and failure mechanisms of long glass fiber reinforced polypropylene composites (LGFRPPs) have not been studied systematically. In this study, the effects of strain rates (from 0.001 s−1 to 400 s−1) on the mechanical properties and failure mechanism of LGFRPPs were investigated. The results showed that ultimate strength and fracture strain of the LGFRPPs increased obviously, whereas the stiffness remained essentially unchanged with the strain rates from low to high. The micro-failure modes mainly consisted of fibers pulled out, fiber breakage, interfacial debonding, matrix cracking, and ductile to brittle (ductile pulling of fibrils/micro-fibrils) fracture behavior of the matrix. As the strain rates increased, the interfacial bonding properties of LGFRPPs increased, resulting in a gradual increase of fiber breakage at the fracture surface of the specimen and the gradual decrease of pull-out. In this process, more failure energy was absorbed, thus, the ultimate strength and fracture strain of LGFRPPs were improved.

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Section: Introductionmentioning

confidence: 99%

The Effects of Strain Rates on Mechanical Properties and Failure Behavior of Long Glass Fiber Reinforced Thermoplastic Composites

Cui

Wang

et al. 2019

Polymers

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“…There are more complex models for short fiber reinforced composites (SFCs), including matrix viscoelastic-viscoplastic behavior [38], dynamic behavior [39], and progressive fiber/matrix debonding [31] applications that require a complex characterization process and extensive numerical analysis [27,31,39], turning those models as non-industry-friendly.…”

Section: Integral (In-built) Modelmentioning

confidence: 99%

Micromechanical Model for Predicting the Tensile Properties of Guadua angustifolia Fibers Polypropylene-Based Composites

et al. 2022

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In this paper, the one-dimensional tensile behavior of Guadua angustifolia Kunth fibre/polypropylene (PP+GAKS) composites is modeled. The classical model of Kelly–Tyson and its Bowyer–Bader’s solution is not able to reproduce the entire stress—strain curve of the composite. An integral (In-Built) micromechanical model proposed by Isitman and Aykol, initially for synthetic fiber-reinforced composites, was applied to predict micromechanical parameters in short natural fiber composites. The proposed method integrates both the information of the experimental stress-strain curves and the morphology of the fiber bundles within the composite to estimate the interfacial shear strength (IFSS), fiber orientation efficiency factor ηFOD, fiber length efficiency factor ηFLD and critical fiber length lc. It was possible to reproduce the stress-strain curves of the PP+GAKS composite with low residual standard deviation. A methodology was applied using X-ray microtomography and digital image processing techniques for the precise extraction of the micromechanical parameters involved in the model. The results showed good agreement with the experimental data.

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“…Yet, a surprising trend, observed for all test speeds, is the decrease of composite strain at break when increasing the loading angle with respect to IFD. In general, when the preferential orientation of fibers is the IFD, an increase of composite strain at break is observed when the cutting angle between the IFD and the loading direction increases [, e.g., for case of PP‐short glass fibers]. An observation of the microstructure of PP5AB1 using X‐ray microtomography (Fig.…”

Section: Tensile Properties Of Unreinforced Pp/mapp Matrix and Pp/mapmentioning

confidence: 99%

“…However, mechanical tests in these works were limited to quasi-static conditions of loading that is, no tests were performed to investigate the mechanical behavior of PP-alfa fibers composites under high-strain-rate loadings. In addition, shortfiber-reinforced composites are known to have anisotropic behavior, especially if parts are processed by injection molding, because of the complex distributions of fiber orientation in those materials [18][19][20]. However, in the literature tests were always performed using directly injection molded or hot press molded specimens (and not parts), which did not allow to investigate behavior anisotropy.Literature review also evidences a lack of studies dealing with the conjugate influence of alfa fibers chemical treatment(s) and alfa fiber-PP matrix compatibilization on composite behavior.…”

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confidence: 99%

Performance over a wide range of strain rate of polypropylene reinforced by short alfa fibers

et al. 2018

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Thermoplastics reinforced with short vegetal fibers are appealing materials for technical applications, for instance in automotive, thanks to high specific modulus and at least partially biosourced origin, in particular. However, a more widespread use of those materials is still hampered by a lack of knowledge about their mechanical behavior under severe loading conditions (e.g., high‐strain‐rate loadings). In addition, mechanical behavior is generally anisotropic due to complex reinforcement properties (distributions of fiber length and orientation, strong variability of fiber geometrical and mechanical properties…). In this paper, plates of maleic‐anhydride‐grafted polypropylene (PP) reinforced with short alfa fibers are processed by injection molding, for fiber content varying from 5 to 15 wt%. The tensile behavior of the composites is studied over a wide range of strain rate and for different angles of loading with respect to injection flow direction. Results demonstrate the potential of alfa fibers for the reinforcement of PP from quasi‐static to dynamic loading conditions (strain rate up to about 5 s−1), and in different loading directions. As expected, composite behavior is sensitive to strain rate and the degree of anisotropy logically increases when increasing fiber content. In all cases, material behavior shows a remarkable reproducibility. POLYM. COMPOS., 40:2850–2862, 2019. © 2018 Society of Plastics Engineers

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Modelling and characterisation of dynamic behaviour of short-fibre-reinforced composites

Cited by 21 publications

References 42 publications

The Effects of Strain Rates on Mechanical Properties and Failure Behavior of Long Glass Fiber Reinforced Thermoplastic Composites

The Effects of Strain Rates on Mechanical Properties and Failure Behavior of Long Glass Fiber Reinforced Thermoplastic Composites

Micromechanical Model for Predicting the Tensile Properties of Guadua angustifolia Fibers Polypropylene-Based Composites

Performance over a wide range of strain rate of polypropylene reinforced by short alfa fibers

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