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Testing Techniques for Composite Materials
 

Testing Techniques for Composite Materials

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Series of powerpoint slides showing several commonly used testing techniques for the characterisation of composite materials. The slides are adapted from the University of Liverpool "Advanced ...

Series of powerpoint slides showing several commonly used testing techniques for the characterisation of composite materials. The slides are adapted from the University of Liverpool "Advanced Composite Materials" lectures [MATS411] by Prof. W. Cantwell.

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    Testing Techniques for Composite Materials Testing Techniques for Composite Materials Presentation Transcript

    • P
      Double Cantilever Beam (DCB) test geometry
      Used to determine mode I failure strength of composite materials
      δ
      End block
      h
      Pre-crack
      2h
      B
      a
      P
      Beam Theory Method:
      (J/m2)
    • End Notch Flexure (ENF) test geometry
      Used to determine mode II failure strength of composite materials
      a
      P
      B
      Pre-crack
      2h
      L
      L
      Beam Theory Method:
      (J/m2)
    • Mixed-mode (I/II) Interlaminar Fracture test geometry
      Used to determine mixed mode interlaminar failure strength of composite materials
      B
      L
      a
      P
      δ
      Pre-crack
      2h
      Mixed-mode fracture Energy:
      (J/m2)
    • Single Cantilever Beam (SCB) test geometry
      Used to determine skin debonding energy for thick skinned composite sandwich structures
      B
      Clamp
      P
      Core material
      Pre-crack
      Clamp
      a
      Mixed-mode fracture Energy:
      (J/m2)
    • Centre Notch Flexure (CNF) test geometry
      Used to determine skin debonding energy for thin skinned composite sandwich structures
      B
      P
      P
      Hole
      δ
      Pre-crack
      a
      Mixed-mode fracture Energy:
      (J/m2)
    • Interlaminar Shear Strength (ILSS) test geometry
      Standardised three point bend test used to determine interlaminate shear strength for composite structures
      P
      B
      10mm
      δ
      2mm
      20mm
      Interlaminate Shear Strength:
      (J/m2)