Effect of the Characteristics of Nylon Microparticles on Mode-I Interlaminar Fracture Toughness of Carbon-Fibre/Epoxy Composites

Wei-Ting Wang; HaNa Yu; Kevin Potter; Byung Chul Kim

doi:10.1016/j.compositesa.2020.106073

Effect of the Characteristics of Nylon Microparticles on Mode-I Interlaminar Fracture Toughness of Carbon-Fibre/Epoxy Composites

Wei-Ting Wang, HaNa Yu, Kevin Potter, Byung Chul Kim^*

^*Corresponding author for this work

Research output: Contribution to journal › Article (Academic Journal) › peer-review

13 Citations (Scopus)

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Abstract

Interleaving a laminated composite with thermoplastic particles is known as an effective method to improve the interlaminar fracture toughness. In this work, to provide useful insight into what particle characteristics are the most critical to the toughening effect, the interlaminar fracture behaviours of carbon fibre/epoxy composites interleaved with different types of nylon 6 and 12
particles were investigated in the same range of particle areal weights. The results showed the particle size affects the toughness only when the particle-matrix interfacial bonding is well established, which is related to the curing temperature relative to the melting temperature of the particle. High interfacial bonding strength allowed the particles to be plastically deformed while bridging the crack, and smaller particles were more effective due to the increased density of particle bridging. It was also found that both the particle size and shape
affect thickening of the interlayer, which can cause a knockdown of in-plane laminate properties due to the reduced fibre volume fraction.

Original language	English
Article number	106073
Number of pages	9
Journal	Composites Part A: Applied Science and Manufacturing
Volume	138
Early online date	17 Aug 2020
DOIs	https://doi.org/10.1016/j.compositesa.2020.106073
Publication status	Published - 1 Nov 2020

Keywords

A. Laminates
B. Fracture toughness
Delamination
D. Mechanical testing

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Accepted author manuscript, 3.98 MBLicence: CC BY-NC-ND

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title = "Effect of the Characteristics of Nylon Microparticles on Mode-I Interlaminar Fracture Toughness of Carbon-Fibre/Epoxy Composites",

abstract = "Interleaving a laminated composite with thermoplastic particles is known as an effective method to improve the interlaminar fracture toughness. In this work, to provide useful insight into what particle characteristics are the most critical to the toughening effect, the interlaminar fracture behaviours of carbon fibre/epoxy composites interleaved with different types of nylon 6 and 12 particles were investigated in the same range of particle areal weights. The results showed the particle size affects the toughness only when the particle-matrix interfacial bonding is well established, which is related to the curing temperature relative to the melting temperature of the particle. High interfacial bonding strength allowed the particles to be plastically deformed while bridging the crack, and smaller particles were more effective due to the increased density of particle bridging. It was also found that both the particle size and shape affect thickening of the interlayer, which can cause a knockdown of in-plane laminate properties due to the reduced fibre volume fraction.",

keywords = "A. Laminates, B. Fracture toughness, Delamination, D. Mechanical testing",

author = "Wei-Ting Wang and HaNa Yu and Kevin Potter and Kim, {Byung Chul}",

year = "2020",

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doi = "10.1016/j.compositesa.2020.106073",

language = "English",

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journal = "Composites Part A: Applied Science and Manufacturing",

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TY - JOUR

T1 - Effect of the Characteristics of Nylon Microparticles on Mode-I Interlaminar Fracture Toughness of Carbon-Fibre/Epoxy Composites

AU - Wang, Wei-Ting

AU - Yu, HaNa

AU - Potter, Kevin

AU - Kim, Byung Chul

PY - 2020/11/1

Y1 - 2020/11/1

N2 - Interleaving a laminated composite with thermoplastic particles is known as an effective method to improve the interlaminar fracture toughness. In this work, to provide useful insight into what particle characteristics are the most critical to the toughening effect, the interlaminar fracture behaviours of carbon fibre/epoxy composites interleaved with different types of nylon 6 and 12 particles were investigated in the same range of particle areal weights. The results showed the particle size affects the toughness only when the particle-matrix interfacial bonding is well established, which is related to the curing temperature relative to the melting temperature of the particle. High interfacial bonding strength allowed the particles to be plastically deformed while bridging the crack, and smaller particles were more effective due to the increased density of particle bridging. It was also found that both the particle size and shape affect thickening of the interlayer, which can cause a knockdown of in-plane laminate properties due to the reduced fibre volume fraction.

AB - Interleaving a laminated composite with thermoplastic particles is known as an effective method to improve the interlaminar fracture toughness. In this work, to provide useful insight into what particle characteristics are the most critical to the toughening effect, the interlaminar fracture behaviours of carbon fibre/epoxy composites interleaved with different types of nylon 6 and 12 particles were investigated in the same range of particle areal weights. The results showed the particle size affects the toughness only when the particle-matrix interfacial bonding is well established, which is related to the curing temperature relative to the melting temperature of the particle. High interfacial bonding strength allowed the particles to be plastically deformed while bridging the crack, and smaller particles were more effective due to the increased density of particle bridging. It was also found that both the particle size and shape affect thickening of the interlayer, which can cause a knockdown of in-plane laminate properties due to the reduced fibre volume fraction.

KW - A. Laminates

KW - B. Fracture toughness

KW - Delamination

KW - D. Mechanical testing

U2 - 10.1016/j.compositesa.2020.106073

DO - 10.1016/j.compositesa.2020.106073

M3 - Article (Academic Journal)

SN - 1359-835X

VL - 138

JO - Composites Part A: Applied Science and Manufacturing

JF - Composites Part A: Applied Science and Manufacturing

M1 - 106073

ER -

Effect of the Characteristics of Nylon Microparticles on Mode-I Interlaminar Fracture Toughness of Carbon-Fibre/Epoxy Composites

Abstract

Keywords

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