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Design And Fabrication Considerations For Composite Structures With Embedded Fiber Optic Sensors

Tactical aircraft and commercial and military space structures of the 21st century will employ embedded sensors and actuators to optimize their performance and survivability. As design engineers attempt to incorporate these devices into the new designs, they are faced with numerous additional variables but little criteria for making critical decisions. Textron Aerostructures and Tennessee Technological University have undertaken to develop the technologies necessary to design and build laminated composite structures incorporating a variety of embedded devices. Production techniques are being developed for embedding the devices using both manual and automated methods. Design guidelines to help establish the appropriate device, embedding location and installation methods are also being developed. The experience obtained through the fabrication of a variety of test panels will be discussed and shown. Photomicrographs will be used to illustrate a range of embedding techniques and to document the results. A variety of techniques to bring the optical fibers out of the laminate will also be illustrated and discussed. Conclusions, preliminary recommendations and future plans will also be discussed.