Fatigue delamination initiation in L-bend CFRP coupons

J. P. Blanchfield; G. Allegri

Fatigue delamination initiation in L-bend CFRP coupons

J. P. Blanchfield^*
, G. Allegri

^*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceeding › Conference Contribution (Conference Proceeding)

2 Citations (Scopus)

Abstract

Accurate modelling of the delamination of composites due to cyclic loading is important to reduce the costs associated with fatigue testing of structures. This work aims to identify the point of damage initiation in a carbon-fibre laminate subject to pure interlaminar tensile cyclic loading for a range of severities and stress ratios, in order to generate full SN-curves for an aerospace-grade carbon-fibre epoxy composite. Curved beams have been used in 4-point bend tests roughly in line with the ASTM D 6415 test standard to generate the required failure conditions. The tests were monitored in-situ using an Acoustic Emissions system and post-test CT (X-Ray) Scans were employed to identify failure conditions in the specimens.

Original language	English
Title of host publication	16th European Conference on Composite Materials, ECCM 2014
Publisher	European Conference on Composite Materials, ECCM
ISBN (Print)	9780000000002
Publication status	Published - 2014
Event	16th European Conference on Composite Materials, ECCM 2014 - Seville, Spain Duration: 22 Jun 2014 → 26 Jun 2014

Conference

Conference	16th European Conference on Composite Materials, ECCM 2014
Country/Territory	Spain
City	Seville
Period	22/06/14 → 26/06/14

Research Groups and Themes

Composites UTC

Keywords

Composites
Curved beams
Initiation
SN-curves

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@inproceedings{843de301d05c42f0b4ab777030def161,

title = "Fatigue delamination initiation in L-bend CFRP coupons",

abstract = "Accurate modelling of the delamination of composites due to cyclic loading is important to reduce the costs associated with fatigue testing of structures. This work aims to identify the point of damage initiation in a carbon-fibre laminate subject to pure interlaminar tensile cyclic loading for a range of severities and stress ratios, in order to generate full SN-curves for an aerospace-grade carbon-fibre epoxy composite. Curved beams have been used in 4-point bend tests roughly in line with the ASTM D 6415 test standard to generate the required failure conditions. The tests were monitored in-situ using an Acoustic Emissions system and post-test CT (X-Ray) Scans were employed to identify failure conditions in the specimens.",

keywords = "Composites, Curved beams, Initiation, SN-curves",

author = "Blanchfield, \{J. P.\} and G. Allegri",

year = "2014",

language = "English",

isbn = "9780000000002",

booktitle = "16th European Conference on Composite Materials, ECCM 2014",

publisher = "European Conference on Composite Materials, ECCM",

note = "16th European Conference on Composite Materials, ECCM 2014 ; Conference date: 22-06-2014 Through 26-06-2014",

}

TY - GEN

T1 - Fatigue delamination initiation in L-bend CFRP coupons

AU - Blanchfield, J. P.

AU - Allegri, G.

PY - 2014

Y1 - 2014

N2 - Accurate modelling of the delamination of composites due to cyclic loading is important to reduce the costs associated with fatigue testing of structures. This work aims to identify the point of damage initiation in a carbon-fibre laminate subject to pure interlaminar tensile cyclic loading for a range of severities and stress ratios, in order to generate full SN-curves for an aerospace-grade carbon-fibre epoxy composite. Curved beams have been used in 4-point bend tests roughly in line with the ASTM D 6415 test standard to generate the required failure conditions. The tests were monitored in-situ using an Acoustic Emissions system and post-test CT (X-Ray) Scans were employed to identify failure conditions in the specimens.

AB - Accurate modelling of the delamination of composites due to cyclic loading is important to reduce the costs associated with fatigue testing of structures. This work aims to identify the point of damage initiation in a carbon-fibre laminate subject to pure interlaminar tensile cyclic loading for a range of severities and stress ratios, in order to generate full SN-curves for an aerospace-grade carbon-fibre epoxy composite. Curved beams have been used in 4-point bend tests roughly in line with the ASTM D 6415 test standard to generate the required failure conditions. The tests were monitored in-situ using an Acoustic Emissions system and post-test CT (X-Ray) Scans were employed to identify failure conditions in the specimens.

KW - Composites

KW - Curved beams

KW - Initiation

KW - SN-curves

UR - https://www.scopus.com/pages/publications/84915745664

M3 - Conference Contribution (Conference Proceeding)

AN - SCOPUS:84915745664

SN - 9780000000002

BT - 16th European Conference on Composite Materials, ECCM 2014

PB - European Conference on Composite Materials, ECCM

T2 - 16th European Conference on Composite Materials, ECCM 2014

Y2 - 22 June 2014 through 26 June 2014

ER -

Fatigue delamination initiation in L-bend CFRP coupons

Abstract

Conference

Research Groups and Themes

Keywords

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