The aim is to develop a monitoring method for controlling the damage of glass/resin materials in-service for a purpose of preventive maintenance. Carbon fiber resistive sensors are introduced directly inside composite materials during manufacturing. The increase of their electric resistance, caused by elongation and then rupture of carbon filaments during loading of the composite structure, is monitored. Finally the sensors electric response is modeled in order to develop a real time damage monitoring system. Statistic functions (Weibull, Sigmoid) are implemented to describe successive failure phenomenon of carbon filaments. The concept is validated on composite pipes subjected to biaxial loading.
| Number of Pages : | 8 |
| Published : | 11/01/2000 |
