Review of damages prediction in a composite material at low velocity impact

Khathyri, Fatima; Elkihel, Bachir; Delaunois, Fabienne

doi:10.30574/gjeta.2019.1.1.0007

Cited by 4 publications

(4 citation statements)

References 51 publications

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“…Therefore, the behavior of composites under various loads needs to be understood. Therefore, depending on the speed, the impact is generally classified as low impact (˂10 m/s), medium (50-200 m/s) and high speed (200-5000 m/s) (FATIMA, BACHIR and FABIENNE, 2019).…”

Section: Mechanical Properties Of Crnfsmentioning

confidence: 99%

Properties and Applications of Composites Reinforced With Natural Fibers – A Brief Review

Junio,

Silva,

Neuba

et al. 2023

JER

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The current concern on the environmental appeal provides a search for the development of eco-friendly materials that are applied in the most diverse areas of knowledge. In this scenario, natural lignocellulosic fibers (NLFs) are highlighted, because in comparison to conventional synthetic fibers they have several advantages, such as lower density, biodegradability and abundant availability, cause low damage to equipment. Additionally, their wastes do not pollute the environment. These characteristics make them a promising alternative for use as reinforcement in composite materials. There is a growing interest on the part of the academic community in investigating the properties presented by composites reinforced with natural fibers (CRNFs), thus generating a high number of published works related to this topic. Various methodologies are investigated with the aim of causing a significant improvement in the properties presented by the CRNFs, such as fiber surface treatments, manufacturing processes or processing temperatures. The properties presented by these composites are directly dependent on the matrix, the fiber reinforcement and the interface region between these phases. CRNFs are growing in number and degree of applications, being observed in different areas such as civil construction, naval, military, medical, fashion, automobile and several others, where all of them need materials that exhibit exceptional properties allied to low weight. The present work intends to present an up dated brief review on CRNFs, where due emphasis are given to the manufacturing methods, properties and main applications for these materials.

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Section: Mechanical Properties Of Crnfsmentioning

confidence: 99%

Properties and Applications of Composites Reinforced With Natural Fibers – A Brief Review

Junio,

Silva,

Neuba

et al. 2023

JER

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“…In an IT, composite failure initiation and development occur opposite (tension zone) at the impactor and samples contact point (compression zone). The fracture develops towards the impactor [14,17,20,37]. The UD FRP composites possess a low interlaminar fracture toughness due to their fibre arrangement, and, under impact loading, delamination occurs favourably, resulting in higher impact damage [38].…”

Section: Recycled Composite Damage Behaviourmentioning

confidence: 99%

“…Several studies have experimentally and numerically investigated the (tensile and impact) mechanical properties and failure behaviours. These can be found in literature reviews, such as Laffan et al 2012 [18], Wang and Huang 2018 [19], Fatima et al 2019 [20] and Müzel et al 2020 [21]. However, these studies purely focused on virgin composites and recorded no significant studies involving recycled composites.…”

Section: Introductionmentioning

confidence: 99%

A Finite Element Study to Investigate the Mechanical Behaviour of Unidirectional Recycled Carbon Fibre/Glass Fibre–Reinforced Epoxy Composites

Gopalraj

Kärki

2021

Polymers

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Recycled carbon fibre–reinforced epoxy (rCF/EP) composites and recycled glass fibre–reinforced epoxy (rGF/EP) composites were numerically investigated to examine their mechanical properties, such as uniaxial tensile and impact resistance, using finite element (FE) methods. The recycled composites possess unidirectional, long and continuous fibre arrangements. A commercially available Abaqus/CAE software was used to perform an explicit non-linear analysis with a macroscale modelling approach, assuming the recycled composites as both homogenous and isotropic hardening. Five composite types were subjected to a numerical study based on the recycled fibre’s volume fraction (40 and 60%) of rCF/EP and rGF/EP, along with (100%) fibreless cured epoxy samples. The materials were defined as elastoplastic with a continuum ductile damage (DUCTCRT) model. The experimental tensile test results were processed and calibrated as primary input data for the developed FE models. The numerical tensile results, maximum principal stress and logarithmic strain were validated with their respective experimental results. The stress–strain curves of both results possess a high accuracy, supporting the developed FE model. The numerical impact tests examined the von Mises stress distribution and found an exponential decrease in the stiffness of the composite types as their strength decreased, with the 60% rCF/EP sample being the stiffest. The model was sensitive to the mesh size, hammer velocity and simulation time step. Additionally, the total internal energy and plastic dissipation energy were measured, but were higher than the experimentally measured energies, as the FE models eliminated the defects from the recycled process, such as a poor fibre wettability to resin, fibre bundle formation in rCFs and char formation in rGFs. Overall, the developed FE models predicted the results for a defect-free rCF/EP and rGF/EP composite. Hence, the adopted modelling techniques can validate the experimental results of recycled composites with complex mechanical properties and damage behaviours in tensile and impact loading conditions.

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“…Hundreds of articles with the results of such studies have been published to date. Several recent articles containing fairly detailed and structured reviews on this topic should be noted [4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

The Influence of thickness on residual flexural strength of composite with low-velocity impact damages: Experimental study

A¹,

Ignatova²,

A³

2021

PNRPU Mechanics Bulletin

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Assessment of the residual strength of composite structural elements that can be subjected to low-velocity impact during operation is still a vital engineering problem. Its solution requires not only the understanding of the basic mechanisms of energy dissipation in composites but, the study of factors affecting the impact resistance of the material. The thickness is one of the main parameters that affects the mechanical behaviour of the composite at low-velocity impacts and, as a consequence, its residual strength. This paper presents the experimental study of the material thickness and impact energy influence on the residual flexural strength of woven glass fibrereinforced plastic specimens. At the first stage of the study, low-velocity impact tests with different impact energies on GFRP plate specimens with the thickness of 2 mm, 4 mm, and 6 mm were carried out. At the second stage, the beam specimens were cut out from the plate specimens with impact damages, and three-point bending tests were carried out. The dependencies of the residual flexural strength were obtained at various impact energies for all specimen thicknesses. The sensitivity of the Flexure-After-Impact test protocol to the delamination and fibre damages in the composite specimens were assessed.

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Review of damages prediction in a composite material at low velocity impact

Cited by 4 publications

References 51 publications

Properties and Applications of Composites Reinforced With Natural Fibers – A Brief Review

Properties and Applications of Composites Reinforced With Natural Fibers – A Brief Review

A Finite Element Study to Investigate the Mechanical Behaviour of Unidirectional Recycled Carbon Fibre/Glass Fibre–Reinforced Epoxy Composites

The Influence of thickness on residual flexural strength of composite with low-velocity impact damages: Experimental study

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