Pseudo-ductility by fragmentation of central unidirectional plies in thin CFRP angle-ply laminates

J. D. Fuller, M. Jalalvand, M. R. Wisnom

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

4 Citations (Scopus)

Abstract

Pseudo-ductile metal-like tensile stress-strain responses with 700 MPa "yield stress" plateau and 4.0% failure strain have been achieved experimentally using thin-ply carbon epoxy prepreg and [+26n/0]S (n = 8 and 10) layups. Analysis of tested specimens has been conducted using microscopy and ultrasonic C-scan. These show that periodic fibre breakages in the 0° plies lead to local delaminations that propagate along the 0°/ - 26° interfaces. This gradual failure process of fragmentation and dispersed local delamination allows the demonstrated pseudo-ductile strains.

LanguageEnglish
Title of host publication16th European Conference on Composite Materials, ECCM 2014
Number of pages9
ISBN (Electronic)9780000000002
Publication statusPublished - 2014
Event16th European Conference on Composite Materials, ECCM 2014 - Seville, Spain
Duration: 22 Jun 201426 Jun 2014

Conference

Conference16th European Conference on Composite Materials, ECCM 2014
CountrySpain
CitySeville
Period22/06/1426/06/14

Fingerprint

Carbon fiber reinforced plastics
Laminates
Ductility
Delamination
Tensile stress
Yield stress
Microscopic examination
Carbon
Ultrasonics
Metals
Fibers
carbon fiber reinforced plastic

Keywords

  • carbon fibre
  • delamination
  • pseudo-ductility
  • thin ply
  • strain

Cite this

Fuller, J. D., Jalalvand, M., & Wisnom, M. R. (2014). Pseudo-ductility by fragmentation of central unidirectional plies in thin CFRP angle-ply laminates. In 16th European Conference on Composite Materials, ECCM 2014
Fuller, J. D. ; Jalalvand, M. ; Wisnom, M. R. / Pseudo-ductility by fragmentation of central unidirectional plies in thin CFRP angle-ply laminates. 16th European Conference on Composite Materials, ECCM 2014. 2014.
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Fuller, JD, Jalalvand, M & Wisnom, MR 2014, Pseudo-ductility by fragmentation of central unidirectional plies in thin CFRP angle-ply laminates. in 16th European Conference on Composite Materials, ECCM 2014. 16th European Conference on Composite Materials, ECCM 2014, Seville, Spain, 22/06/14.

Pseudo-ductility by fragmentation of central unidirectional plies in thin CFRP angle-ply laminates. / Fuller, J. D.; Jalalvand, M.; Wisnom, M. R.

16th European Conference on Composite Materials, ECCM 2014. 2014.

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

TY - GEN

T1 - Pseudo-ductility by fragmentation of central unidirectional plies in thin CFRP angle-ply laminates

AU - Fuller, J. D.

AU - Jalalvand, M.

AU - Wisnom, M. R.

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N2 - Pseudo-ductile metal-like tensile stress-strain responses with 700 MPa "yield stress" plateau and 4.0% failure strain have been achieved experimentally using thin-ply carbon epoxy prepreg and [+26n/0]S (n = 8 and 10) layups. Analysis of tested specimens has been conducted using microscopy and ultrasonic C-scan. These show that periodic fibre breakages in the 0° plies lead to local delaminations that propagate along the 0°/ - 26° interfaces. This gradual failure process of fragmentation and dispersed local delamination allows the demonstrated pseudo-ductile strains.

AB - Pseudo-ductile metal-like tensile stress-strain responses with 700 MPa "yield stress" plateau and 4.0% failure strain have been achieved experimentally using thin-ply carbon epoxy prepreg and [+26n/0]S (n = 8 and 10) layups. Analysis of tested specimens has been conducted using microscopy and ultrasonic C-scan. These show that periodic fibre breakages in the 0° plies lead to local delaminations that propagate along the 0°/ - 26° interfaces. This gradual failure process of fragmentation and dispersed local delamination allows the demonstrated pseudo-ductile strains.

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KW - delamination

KW - pseudo-ductility

KW - thin ply

KW - strain

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M3 - Conference contribution book

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Fuller JD, Jalalvand M, Wisnom MR. Pseudo-ductility by fragmentation of central unidirectional plies in thin CFRP angle-ply laminates. In 16th European Conference on Composite Materials, ECCM 2014. 2014