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Which statement about delamination is TRUE?

  • A.It occurs at ply interfaces
  • B.It occurs within a single ply
  • C.It involves fibre breakage
  • D.It only occurs under tensile loading

Answer: A

Correct answer: It occurs at ply interfaces

Delamination is the separation of adjacent plies, occurring at the resin-rich interface between them where no fibre crosses. Fibres are not broken, which is why the damage can be extensive without any surface indication. It arises under interlaminar tension or shear, and impact is the commonest cause - not tension in the plane of the laminate.

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