Pseudo-ductility and reduced notch sensitivity in multi-directional all-carbon/epoxy thin-ply hybrid composites

Gergely Czél; Tamas Rev; Meisam Jalalvand; Mohamad Fotouhi; Marco L. Longana; Oliver J. Nixon-Pearson; Michael R. Wisnom

doi:10.1016/j.compositesa.2017.10.028

Pseudo-ductility and reduced notch sensitivity in multi-directional all-carbon/epoxy thin-ply hybrid composites

Gergely Czél
, Tamas Rev
, Meisam Jalalvand
, Mohamad Fotouhi
, Marco L. Longana
, Oliver J. Nixon-Pearson
, Michael R. Wisnom

Mechanical And Aerospace Engineering

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

89 Citations (Scopus)

40 Downloads (Pure)

Abstract

Un-notched and notched tensile response and damage accumulation of quasi-isotropic carbon/epoxy hybrid laminates made of ultra-high modulus and intermediate modulus carbon fibre/epoxy thin-ply prepregs were studied. It was confirmed that the ply fragmentation demonstrated previously in unidirectional hybrids as a successful pseudo-ductility mechanism can be transferred to multi-directional laminates. Furthermore, reduced notch sensitivity was demonstrated in quasi-isotropic specimens for both open holes and sharp notches as a result of local ply fragmentation around the notch.

Original language	English
Pages (from-to)	151-164
Number of pages	14
Journal	Composites Part A: Applied Science and Manufacturing
Volume	104
Early online date	14 Nov 2017
DOIs	https://doi.org/10.1016/j.compositesa.2017.10.028
Publication status	Published - 31 Jan 2018

Keywords

fragmentation
delamination
damage mechanics
mechanical testing

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10.1016/j.compositesa.2017.10.028Licence: CC BY 4.0

Czel-etal-CPA2017-Pseudo-ductility-and-reduced-notch-sensitivity-in-multi-directionalFinal published version, 2.7 MBLicence: CC BY 4.0

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title = "Pseudo-ductility and reduced notch sensitivity in multi-directional all-carbon/epoxy thin-ply hybrid composites",

abstract = "Un-notched and notched tensile response and damage accumulation of quasi-isotropic carbon/epoxy hybrid laminates made of ultra-high modulus and intermediate modulus carbon fibre/epoxy thin-ply prepregs were studied. It was confirmed that the ply fragmentation demonstrated previously in unidirectional hybrids as a successful pseudo-ductility mechanism can be transferred to multi-directional laminates. Furthermore, reduced notch sensitivity was demonstrated in quasi-isotropic specimens for both open holes and sharp notches as a result of local ply fragmentation around the notch.",

keywords = "fragmentation, delamination, damage mechanics, mechanical testing",

author = "Gergely Cz{\'e}l and Tamas Rev and Meisam Jalalvand and Mohamad Fotouhi and Longana, \{Marco L.\} and Nixon-Pearson, \{Oliver J.\} and Wisnom, \{Michael R.\}",

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doi = "10.1016/j.compositesa.2017.10.028",

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pages = "151--164",

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T1 - Pseudo-ductility and reduced notch sensitivity in multi-directional all-carbon/epoxy thin-ply hybrid composites

AU - Czél, Gergely

AU - Rev, Tamas

AU - Jalalvand, Meisam

AU - Fotouhi, Mohamad

AU - Longana, Marco L.

AU - Nixon-Pearson, Oliver J.

AU - Wisnom, Michael R.

PY - 2018/1/31

Y1 - 2018/1/31

N2 - Un-notched and notched tensile response and damage accumulation of quasi-isotropic carbon/epoxy hybrid laminates made of ultra-high modulus and intermediate modulus carbon fibre/epoxy thin-ply prepregs were studied. It was confirmed that the ply fragmentation demonstrated previously in unidirectional hybrids as a successful pseudo-ductility mechanism can be transferred to multi-directional laminates. Furthermore, reduced notch sensitivity was demonstrated in quasi-isotropic specimens for both open holes and sharp notches as a result of local ply fragmentation around the notch.

AB - Un-notched and notched tensile response and damage accumulation of quasi-isotropic carbon/epoxy hybrid laminates made of ultra-high modulus and intermediate modulus carbon fibre/epoxy thin-ply prepregs were studied. It was confirmed that the ply fragmentation demonstrated previously in unidirectional hybrids as a successful pseudo-ductility mechanism can be transferred to multi-directional laminates. Furthermore, reduced notch sensitivity was demonstrated in quasi-isotropic specimens for both open holes and sharp notches as a result of local ply fragmentation around the notch.

KW - fragmentation

KW - delamination

KW - damage mechanics

KW - mechanical testing

UR - http://www.sciencedirect.com/science/journal/1359835X

U2 - 10.1016/j.compositesa.2017.10.028

DO - 10.1016/j.compositesa.2017.10.028

M3 - Article

SN - 1359-835X

VL - 104

SP - 151

EP - 164

JO - Composites Part A: Applied Science and Manufacturing

JF - Composites Part A: Applied Science and Manufacturing

ER -

Pseudo-ductility and reduced notch sensitivity in multi-directional all-carbon/epoxy thin-ply hybrid composites

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Keywords

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