This chapter describes the development of load monitoring systems integrated in the demonstrator of a smart wing structure. A monitoring system has been designed and installed on composite spars, with the aim of mapping the load conditions along the axes of such components. Such system is based on optical fibres embedded in ribbons, which have been externally bonded to the spars according to a specific optical architecture. A second system, based on conventional strain gages, has been designed to provide the sectional loads on the whole wing during wind tunnel testing and to interact with an aerodynamic load model. Both monitoring systems have been defined by using detailed FE models of the spar and of the whole wing box. Algorithms for the identification of internal and sectional loads have been developed. Finally, a third type of system is conceived to evaluate the possibility of damage detection into composite spars by using a denser network of sensors. The numerical procedures followed for the design and the calibration of the systems are discussed to assess a methodology for the development of health and usage monitoring systems to be applied in advanced aerospace structures.
Load Monitoring by Means of Optical Fibres and Strain Gages
Smart Intelligent Aircraft Structures (SARISTU) ; Kapitel : 20 ; 433-469
05.09.2015
37 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
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