The use of chirped fibre Bragg grating sensors to monitor disbond growth in bonded composite structures

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• Steve Ogin, Department of Materials, Surfaces and Structural Systems, University of Surrey
• Thursday 19 February 2009, 16:00-17:00
• Mott Seminar Room, Cavendish Laboratory, Department of Physics.

If you have a question about this talk, please contact Stephen Walley.

The growth in the use of composite materials, and the development of more reliable bonding techniques, has led to a desire to reduce the weight of composite structures by using adhesive bonding. However, the integrity of an as-manufactured bonded joint, and the in-service performance of such a joint, is difficult to monitor. The use of embedded optical sensors based on chirped fibre Bragg gratings (CFBGs) will be described, a method which enables both poor adhesive bonds to be detected and the initiation and growth of fatigue damage (in the form of disbonding – also called delamination) to be monitored.

This talk is part of the Physics and Chemistry of Solids Group series.

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