Passive/Active Health Monitoring of Filament Wound Missiles
PURDUE UNIV LAFAYETTE IN
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Precision long-range missile systems will be fabricated using composite materials to meet the desired weight and performance requirements. A fully featured health monitoring system is developed in this paper. Here, the term health monitoring is used to refer to both loads and damage identification for assessing the material state and structural performance of the missile casing pressure vessel. The initial component of the system developed in this paper is a passive monitoring system that only requires a single sensor. This passive system is able to detect, locate, and quantify an impact while also being able to use this impact to estimate the amount of damage that the impact caused in the specimen. If further evaluation of the casing is desired, an offline active nondestructive evaluation method utilizing nonlinear vibro-acoustics may be used. This active technique is advantageous because it heightens the measurements sensitivity to damage despite widely varying boundary and environmental conditions due to the effects of propellant, temperature, humidity, etc. The passive and active sensing methods described can be combined to provide a full featured health monitoring solution.
- Guided Missiles