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FBG (fiber Bragg grating) sensors were applied to durability tests of a composite wing structure in order to verify its health monitoring capabilities for long-term use. The durability tests included drop-weight impact tests and two periodic fatigue tests based on the design service life of the aircraft. The seven FBG sensors were installed to the surface of the test panel for the monitoring of impact...
The relative bending properties of T-sections produced from three-dimensional (3D) integrally woven preforms and unidirectional prepreg have been investigated with respect to their stress-strain behaviour, skin-stiffener separation loads and fracture behaviour. These tests were carried out to simulate localised skin-stiffener separation that is normally responsible for the failure of postbuckling...
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