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Propagation of Laser Generated Broadband Ultrasonic Pulses in a Thick Carbon Fibre Composite Plate

  • L. P. Scudder
  • D. A. Hutchins
  • N. Guo

Abstract

The use of laser generated ultrasound for the pulse-echo testing of carbon fibre reinforced polymer (CFRP) aerospace components is being established [1,2]. Our particular interest is in the possibility of using ultrasound propagating from the laser source along the component, as bulk or plate waves, as a means of testing a larger area for a single step in a scan. As part of an investigation into how laser generated pulses propagate in CFRP we have examined their propagation in a 40 ply, 5.5mm thick (300x300mm area) unidirectional plate. The plate was made from carbon fibre reinforced epoxy resin pre-preg (Enka Tenax HTA fibre; ICI 7716H epoxy resin). Plies were cut out by hand, laid up and then cured in a compression mould.

Keywords

Slow Wave Thick Plate Carbon Fibre Reinforce Polymer Wave Group Plate Wave 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Plenum Press, New York 1993

Authors and Affiliations

  • L. P. Scudder
    • 1
  • D. A. Hutchins
    • 1
  • N. Guo
    • 2
  1. 1.Engineering DepartmentWarwick UniversityCoventry, W.MidlandsUK
  2. 2.Mechanical Engineering DepartmentImperial College of Science and TechnologyLondonUK

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