Location

La Jolla, CA

Start Date

1-1-1993 12:00 AM

Description

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.

Book Title

Review of Progress in Quantitative Nondestructive Evaluation

Volume

12B

Chapter

Chapter 5: Engineered Materials

Section

Composite Properties

Pages

1209-1216

DOI

10.1007/978-1-4615-2848-7_154

Language

en

File Format

application/pdf

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Jan 1st, 12:00 AM

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

La Jolla, CA

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.