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The possibility of a combined and powerful use of acoustic emission ant thermal emission as real-time monitoring techniques on carbon-epoxy composites is examined. Tensile tests are performed, using a cross-head speed able to fit with the spread of acoustic emission signals from mechanical solicitation, allowing reasonable stress distribution, but also the application of thermal emission. This second technique, usually considered for an adiabatic use (then in very fast load applications) is here employed with a quasi-thermographic concept, enabling the correct measurement of thermoelastic limit but referring especially to the local heat exchange due to solicitation. The idea is therfore to apply this technique to a predictive tool of inspection and consequently to relate, in a synergetic manner, its data with acoustic emission outputs.

Additional information

Authors: SANTULLI C, JRC Ispra (IT)
Bibliographic Reference: Paper presented: Polymeric Composites - Expanding the Limits, Roskilde (DK), September 1-5, 1997
Availability: Available from (1) as Paper EN 40665 ORA
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