The influence of fibre angle on the compressive strength of delaminated surface plies

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  • 2 Citations

Abstract

An extremely efficient Strip Model which predicts
the applied strain below which initial local buckledriven
propagation of a delamination will not occur
is applied to a ±o surface sublaminate. The Strip
Model is shown to perform well, compared to
experiments and Finite Element Analysis, when the
mismatch between the Poisson’s ratio of the full
laminate and surface sublaminate is less than 0.5.
Laminates with larger mismatches which induce
lateral compression in the sub-laminate propagate
earlier than predicted. Mismatches that put the
delaminated sublaminate into transverse tension are
shown to improve resistance to delamination
propagation. The most favourable surface plies, both
in terms of strength following delamination and
buckling capacity of the full laminate are confirmed
to be ±45o.
LanguageEnglish
Number of pages10
StatusPublished - 21 Aug 2011

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Compressive strength
Laminates
Delamination
Fibers
Poisson ratio
Buckling
Crack propagation
Compaction
Finite element method
Experiments

Keywords

  • Buckling
  • Delamination
  • Propagation
  • Poisson's ratio

Cite this

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title = "The influence of fibre angle on the compressive strength of delaminated surface plies",
abstract = "An extremely efficient Strip Model which predictsthe applied strain below which initial local buckledrivenpropagation of a delamination will not occuris applied to a ±o surface sublaminate. The StripModel is shown to perform well, compared toexperiments and Finite Element Analysis, when themismatch between the Poisson’s ratio of the fulllaminate and surface sublaminate is less than 0.5.Laminates with larger mismatches which inducelateral compression in the sub-laminate propagateearlier than predicted. Mismatches that put thedelaminated sublaminate into transverse tension areshown to improve resistance to delaminationpropagation. The most favourable surface plies, bothin terms of strength following delamination andbuckling capacity of the full laminate are confirmedto be ±45o.",
keywords = "Buckling, Delamination, Propagation, Poisson's ratio",
author = "Andrew Rhead and Richard Butler and Neil Baker",
year = "2011",
month = "8",
day = "21",
language = "English",

}

TY - CONF

T1 - The influence of fibre angle on the compressive strength of delaminated surface plies

AU - Rhead, Andrew

AU - Butler, Richard

AU - Baker, Neil

PY - 2011/8/21

Y1 - 2011/8/21

N2 - An extremely efficient Strip Model which predictsthe applied strain below which initial local buckledrivenpropagation of a delamination will not occuris applied to a ±o surface sublaminate. The StripModel is shown to perform well, compared toexperiments and Finite Element Analysis, when themismatch between the Poisson’s ratio of the fulllaminate and surface sublaminate is less than 0.5.Laminates with larger mismatches which inducelateral compression in the sub-laminate propagateearlier than predicted. Mismatches that put thedelaminated sublaminate into transverse tension areshown to improve resistance to delaminationpropagation. The most favourable surface plies, bothin terms of strength following delamination andbuckling capacity of the full laminate are confirmedto be ±45o.

AB - An extremely efficient Strip Model which predictsthe applied strain below which initial local buckledrivenpropagation of a delamination will not occuris applied to a ±o surface sublaminate. The StripModel is shown to perform well, compared toexperiments and Finite Element Analysis, when themismatch between the Poisson’s ratio of the fulllaminate and surface sublaminate is less than 0.5.Laminates with larger mismatches which inducelateral compression in the sub-laminate propagateearlier than predicted. Mismatches that put thedelaminated sublaminate into transverse tension areshown to improve resistance to delaminationpropagation. The most favourable surface plies, bothin terms of strength following delamination andbuckling capacity of the full laminate are confirmedto be ±45o.

KW - Buckling

KW - Delamination

KW - Propagation

KW - Poisson's ratio

UR - http://www.iccm-central.org/Proceedings/ICCM18proceedings/data/2.%20Oral%20Presentation/Aug24(Wednesday)/W12%20Damage%20Tolerance%20and%20Impact%20Session/W12-1-AF0219.pdf

M3 - Paper

ER -