Abstract: In this paper, a type of simple and excellent crank type etched fiberoptic intensity sensor is presented. A three dimension sensing network, which is composed of etched fiberoptic sensors, is embedded in the laminated composite material structure of vertical tail wing of training 11 plane for the purpose of nondestructive evaluation of structural states in smart composite material and structures. The composite specimens in which sensing network is embedded are tested with stretch and bending in three poi...