Experimental study on the interlaminar fracture properties of carbon fibre reinforced polymer composites with a single embedded toughened film

Eva Pappa; James Quinn; James Murray; James Davidson; Conchúr M. Ó Brádaigh; Eddie McCarthy

doi:10.3390/polym13234103

Experimental study on the interlaminar fracture properties of carbon fibre reinforced polymer composites with a single embedded toughened film

Eva Pappa, James Quinn, James Murray, James Davidson, Conchúr M. Ó Brádaigh, Eddie McCarthy

School of Engineering

Research output: Contribution to journal › Article › peer-review

Abstract

In this study, two types of single polymer films have been inserted in a composite laminate to examine their toughening effects on mechanical properties. The first is a thermoplastic polyurethane (PU) film and the second is an adhesive epoxy film, featuring a polyester net. The laminates were manufactured in a co-curing (CC) process, with an extra secondary bonding (SB) process used for the epoxy film. Mode I and mode II interlaminar fracture toughness were measured for laminates manufactured by both processes and compared with the corresponding reference laminate toughness. A significant increase in both mode I and mode II toughness resulted when introducing a single PU film, approximately 290% and 30%, respectively. Similarly, the epoxy film improved the interlaminar fracture properties; the CC process produced an increase of 175% for mode II toughness, while the SB adhesive film showed an increase of 75% for mode II toughness

Original language	English
Article number	4103
Journal	Polymers
Volume	13
Issue number	23
Early online date	25 Nov 2021
DOIs	https://doi.org/10.3390/polym13234103
Publication status	E-pub ahead of print - 25 Nov 2021

Keywords

Mode I fracture
Mode II fracture
films
interlaminar toughness
secondary bonding
co-curing
carbon fibre

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title = "Experimental study on the interlaminar fracture properties of carbon fibre reinforced polymer composites with a single embedded toughened film",

abstract = "In this study, two types of single polymer films have been inserted in a composite laminate to examine their toughening effects on mechanical properties. The first is a thermoplastic polyurethane (PU) film and the second is an adhesive epoxy film, featuring a polyester net. The laminates were manufactured in a co-curing (CC) process, with an extra secondary bonding (SB) process used for the epoxy film. Mode I and mode II interlaminar fracture toughness were measured for laminates manufactured by both processes and compared with the corresponding reference laminate toughness. A significant increase in both mode I and mode II toughness resulted when introducing a single PU film, approximately 290% and 30%, respectively. Similarly, the epoxy film improved the interlaminar fracture properties; the CC process produced an increase of 175% for mode II toughness, while the SB adhesive film showed an increase of 75% for mode II toughness",

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T1 - Experimental study on the interlaminar fracture properties of carbon fibre reinforced polymer composites with a single embedded toughened film

AU - Pappa, Eva

AU - Quinn, James

AU - Murray, James

AU - Davidson, James

AU - Ó Brádaigh, Conchúr M.

AU - McCarthy, Eddie

PY - 2021/11/25

Y1 - 2021/11/25

N2 - In this study, two types of single polymer films have been inserted in a composite laminate to examine their toughening effects on mechanical properties. The first is a thermoplastic polyurethane (PU) film and the second is an adhesive epoxy film, featuring a polyester net. The laminates were manufactured in a co-curing (CC) process, with an extra secondary bonding (SB) process used for the epoxy film. Mode I and mode II interlaminar fracture toughness were measured for laminates manufactured by both processes and compared with the corresponding reference laminate toughness. A significant increase in both mode I and mode II toughness resulted when introducing a single PU film, approximately 290% and 30%, respectively. Similarly, the epoxy film improved the interlaminar fracture properties; the CC process produced an increase of 175% for mode II toughness, while the SB adhesive film showed an increase of 75% for mode II toughness

AB - In this study, two types of single polymer films have been inserted in a composite laminate to examine their toughening effects on mechanical properties. The first is a thermoplastic polyurethane (PU) film and the second is an adhesive epoxy film, featuring a polyester net. The laminates were manufactured in a co-curing (CC) process, with an extra secondary bonding (SB) process used for the epoxy film. Mode I and mode II interlaminar fracture toughness were measured for laminates manufactured by both processes and compared with the corresponding reference laminate toughness. A significant increase in both mode I and mode II toughness resulted when introducing a single PU film, approximately 290% and 30%, respectively. Similarly, the epoxy film improved the interlaminar fracture properties; the CC process produced an increase of 175% for mode II toughness, while the SB adhesive film showed an increase of 75% for mode II toughness

KW - Mode I fracture

KW - Mode II fracture

KW - films

KW - interlaminar toughness

KW - secondary bonding

KW - co-curing

KW - carbon fibre

U2 - 10.3390/polym13234103

DO - 10.3390/polym13234103

M3 - Article

VL - 13

JO - Polymers

JF - Polymers

SN - 2073-4360

IS - 23

M1 - 4103

ER -

Experimental study on the interlaminar fracture properties of carbon fibre reinforced polymer composites with a single embedded toughened film

Abstract

Keywords

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