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Basic Failure Mechanisms of Laminated Composites and Related Aircraft Design Implications

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Composite Structures 2

Abstract

A critical literature survey of the major failure criteria of laminated fibre reinforced composites is initially carried out. The failure modes of unidirectional material are then summarized, and related to layer failure modes in multidirectional laminates.

A critical upper bound of matrix strain is identified as being a limiting factor in layer longitudinal tensile strength, and interaction criteria are proposed for combined layer shear and longitudinal tension or compression. It is shown that reasonable knowledge of hydrothermal stresses can be important in predicting laminate failure, and that further work concerning the quantification of these is required.

A strength envelope of the cross-ply laminate is produced showing the significance of the various failure modes.

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Abbreviations

E:

Extensional modulus

G:

Shear modulus

Q:

Stiffness matrix

S:

Shear strength across the fibre direction

T:

Shear strength parallel to the fibre direction

V:

Volume fraction

X:

Strength in the fibre direction

Y:

Strength transverse to the fibre direction

ε:

Strain

γ:

Shear strain, when not in tensorial criterion

σ:

Stress

Ï„:

Shear stress, when not in tensorial criterion

c:

compression

crit:

critical

F:

fibre

m:

matrix

References

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Author information

Authors and Affiliations

  1. British Aerospace PLC, Aircraft Group, Warton Division, Warton Aerodrome, Preston, Lancashire, PR4 1AX, England

    R. C. Sanders, E. C. Edge & P. Grant

Authors
  1. R. C. Sanders
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  2. E. C. Edge
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  3. P. Grant
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Editor information

Editors and Affiliations

  1. Department of Mechanical and Production Engineering, Paisley College of Technology, Scotland

    I. H. Marshall

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© 1983 Applied Science Publishers Ltd

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Sanders, R.C., Edge, E.C., Grant, P. (1983). Basic Failure Mechanisms of Laminated Composites and Related Aircraft Design Implications. In: Marshall, I.H. (eds) Composite Structures 2. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-6640-6_33

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  • DOI: https://doi.org/10.1007/978-94-009-6640-6_33

  • Publisher Name: Springer, Dordrecht

  • Print ISBN: 978-94-009-6642-0

  • Online ISBN: 978-94-009-6640-6

  • eBook Packages: Springer Book Archive

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