Inertial Effects in Twin Skinned GRP Laminates Subjected to Impact Loading in a Three Point Bend Configuration

  • R. A. W. Mines
  • C. M. Worrall
  • G. Gibson


Results are given for impact tests for a mass of 4.3 kg dropped from a height of up to 3m onto a GRP sandwich beam in a three point bend configuration. Force versus deflection traces are derived from accelerometer data and the effect of span and impact velocity discussed. A two degree of freedom inertial model is developed for the 180 mm span test to give the local deformation of specimen in the vicinity of the impactor and hence the effect of local stresses on failure. High speed photographic data is used to supplement experimental results.


Contact Stiffness Sandwich Panel Accelerometer Data Drop Height Span Test 
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Copyright information

© Springer Science+Business Media B.V. 1989

Authors and Affiliations

  • R. A. W. Mines
    • 1
  • C. M. Worrall
    • 1
  • G. Gibson
    • 1
  1. 1.Impact Research Centre - Faculty of EngineeringUniversity of LiverpoolLiverpoolEngland

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