NCTAM papers, National Congress of Theoretical and Applied Mechanics, Japan
53rd NCTAM papers, National Congress of Theoretical and Applied Mechanics, Japan
Session ID : 3A10
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OS5-1
Application of FBG sensors to lightweight grid structures
*Hajime TakeyaTsuyoshi OzakiSteven HahnNobuo Takeda
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Abstract
There is growing demand for lightweight structures in aircraft systems for energy and cost saving. Composite materials such as graphite fiber reinforced plastics are promising candidates to meet these requirements. However, since extremely high reliability is required for aircraft systems, composite materials have not been fully applied especially in commercial aircraft. A structural health monitoring system is the most effective technology to solve this problem. A new lightweight grid structure equipped with health monitoring system utilizing FBG (fiber Bragg grating) sensor for aircraft applications is under development. A grid structure has very simple load paths, which are easily detected with FBG sensors embedded in the ribs. By using a multi-point FBG sensor network, the stress distribution over a wide area of a structure can be evaluated. In this paper, the concept of the Highly Reliable Advanced Grid Structure and the result of the first manufacturing trial are reported.
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© 2004 Committee for Mechanics and Structure,Science Council
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