Thermography technique for graphite/epoxy composite structures utilizing embedded thermal fiber optic sensors

Anna Stewart; Gregory Paul Carman; W. Lance Richards

doi:10.1117/12.483383

5 August 2003 Thermography technique for graphite/epoxy composite structures utilizing embedded thermal fiber optic sensors

Anna Stewart, Gregory Paul Carman, W. Lance Richards

Author Affiliations +

Proceedings Volume 5056, Smart Structures and Materials 2003: Smart Structures and Integrated Systems; (2003) https://doi.org/10.1117/12.483383
Event: Smart Structures and Materials, 2003, San Diego, California, United States

Abstract

We investigated a thermal nondestructive evaluation (NDE) technique based on thermography that uses optical fiber thermal sensors to detect damage within a laminated graphite epoxy composite specimen. Composite samples manufactured for testing had fiber optic sensors embedded between layers and thermocouples attached to the exterior. A simulated impact system was used to induce damage of varying degrees into the samples and the damage was confirmed with C-span. The experimental procedures in addition to the test data obtained are presented. The results confirm that the fiber optic thermal sensors can not only detect the presence of damage, but can measure the severity of damage as well.

Citation Download Citation

Anna Stewart, Gregory Paul Carman, and W. Lance Richards "Thermography technique for graphite/epoxy composite structures utilizing embedded thermal fiber optic sensors", Proc. SPIE 5056, Smart Structures and Materials 2003: Smart Structures and Integrated Systems, (5 August 2003); https://doi.org/10.1117/12.483383

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