The influence of interlayer/epoxy adhesion on the mode-I and mode-II fracture response of carbon fibre/epoxy composites interleaved with thermoplastic veils

Deegan, Brian; Alderliesten, R.C.; Dransfeld, Clemens; Murphy, Neal; Ivanković, Alojz; Benedictus, Rinze

doi:10.1016/j.matdes.2020.108781

Cited by 40 publications

(17 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The PA veil was included in the AIR-3R vitrimer composite in order to enhance the interlaminar toughness and impact resistance, as has been demonstrated in several studies addressing interleaving thermoplastic veils [ 75 , 76 , 77 , 78 , 79 , 80 , 81 , 82 , 83 , 84 ]. In view of this microstructure, a new batch of tests was performed on samples without the thermoplastic PA veil; i.e., it was removed and all other conditions were maintained.…”

Section: Resultsmentioning

confidence: 99%

Study into the Mechanical Properties of a New Aeronautic-Grade Epoxy-Based Carbon-Fiber-Reinforced Vitrimer

Cárdenas¹,

Gayraud²,

Rodrı́guez³

et al. 2022

Polymers

View full text Add to dashboard Cite

The current drive for sustainability demands recyclable matrices for composite materials. Vitrimers combine thermoset properties with reprocessability, but their mechanical performance in highly loaded applications, for instance, composites for aeronautics, is still to be demonstrated. This work presents the complete mechanical characterization of a new vitrimer reinforced with carbon fiber. This vitrimer formulation consists of functional epoxy groups and a new dynamic disulfide crosslinks-based hardener. The testing campaign for the vitrimer composites encompassed tension, compression, interlaminar shear strength (ILSS), in-plane shear (IPS), open-hole tension (OHT) and compression (OHC), filled-hole compression (FHC) and interlaminar fracture toughness tests under mode I and II. Test conditions included room temperature and high temperature of 70 °C and 120 °C, respectively, after moisture saturation. Tension and flexural tests also were applied on the neat vitrimer resin. The results compared well with those obtained for current aeronautic materials manufactured by Resin Transfer Molding (RTM). The lower values observed in compression and ILSS derived from the thermoplastic veils included as a toughening material. This work demonstrates that the vitrimer formulation presented meets the requirements of current matrices for aeronautic-grade carbon-reinforced composites.

show abstract

Section: Resultsmentioning

confidence: 99%

Study into the Mechanical Properties of a New Aeronautic-Grade Epoxy-Based Carbon-Fiber-Reinforced Vitrimer

Cárdenas¹,

Gayraud²,

Rodrı́guez³

et al. 2022

Polymers

View full text Add to dashboard Cite

show abstract

“…The majority of studies in literature considering mode-II loading of fibre reinforced laminates interleaved with thermoplastic veils has been on unidirectional laminae, with only a limited number considering satin weaves. The limited studies involving 5HS laminae [6,[22][23][24][25] have configured the parent fibre orientation bias as predominantly 0° orientation [6,19,27,28]. specimens.…”

Section: Discussionmentioning

confidence: 99%

Effect of interfacial fibre orientation and PPS veil density on delamination resistance of 5HS woven CFRP laminates under mode II loading

Ramji

Grasso

et al. 2021

Composites Science and Technology

View full text Add to dashboard Cite

This paper presents an experimental study on the effect of interfacial fibre orientation and interleaved thermoplastic veil on Mode II interlaminar fracture toughness of 5-harness satin woven carbon fibre reinforced polymer composite laminates. Three-point End-Notched Flexure tests were carried out to determine delamination resistance, GIIC of specimens with five fibre orientation biases and two veil densities at the midplane. Results show that delamination resistance of 5-harness satin woven laminates depends on the layup configurations at the midplane with 90/45 fibre orientation bias exhibiting the greatest resistance. The delamination resistance enhancement from polyphenylene sulfide (PPS) veil interleaves is also fibre orientation dependent but a further increase of the veil density from 10gm-2 to 20gm-2 offers little extra benefit. Fracture surface morphologies were examined under SEM to understand the failure mechanism and fracture process of the woven laminate under the combined effects of the interfacial fibre orientation and the veil density. Fibre orientation relative to the delamination path, surface texture misfit, and veil density are the three main contributors identified for the variation of delamination resistance of 5HS woven laminates.

show abstract

“…As is well‐known, correctly estimating the fracture behaviour of FRP composites is complex, involving a high number of variables that have to be properly considered in order to avoid unwanted and dangerous failures. Recent experimental and numerical outcomes explaining the fracture behaviour of FRPs can be found in other studies 13–17 …”

Section: Introductionmentioning

confidence: 95%

“…Recent experimental and numerical outcomes explaining the fracture behaviour of FRPs can be found in other studies. [13][14][15][16][17] Regarding fracture properties of long GFRP composites, to the best knowledge of the present authors, only few studies are available in the literature. Therefore, the aim of this paper is to analyse the fracture behaviour of a unidirectional GFRP composite by means of the modified two-parameter model (MTPM).…”

Section: Introductionmentioning

confidence: 99%

Fracture toughness characterisation of a glass fibre‐reinforced plastic composite

Vantadori

Głowacka

Greco

et al. 2020

Fatigue Fract Eng Mat Struct

View full text Add to dashboard Cite

By examining the state of the art, it can be realised that few research works have been done on the fracture behaviour of plastic composites reinforced with continuous glass fibres. Therefore, the present paper deals with the fracture toughness of a unidirectional glass fibre-reinforced plastic (GFRP), such a parameter being analytically determined by means of the modified twoparameter model (MTPM). The input data of the MTPM are obtained from an experimental campaign related to three-point bending tests on single edgenotched specimens characterised by different sizes. The novelty of this research work is that the MTPM, originally proposed for isotropic materials, is here employed to estimate the fracture toughness of GFRPs characterised by orthotropic mechanical properties.

show abstract

The influence of interlayer/epoxy adhesion on the mode-I and mode-II fracture response of carbon fibre/epoxy composites interleaved with thermoplastic veils

Cited by 40 publications

References 33 publications

Study into the Mechanical Properties of a New Aeronautic-Grade Epoxy-Based Carbon-Fiber-Reinforced Vitrimer

Study into the Mechanical Properties of a New Aeronautic-Grade Epoxy-Based Carbon-Fiber-Reinforced Vitrimer

Effect of interfacial fibre orientation and PPS veil density on delamination resistance of 5HS woven CFRP laminates under mode II loading

Fracture toughness characterisation of a glass fibre‐reinforced plastic composite

Contact Info

Product

Resources

About