2012 Fiscal Year Final Research Report

Study on load identification based on information obtained from distributed sensors

Research Project

Project/Area Number	23760779
Research Category	Grant-in-Aid for Young Scientists (B)
Allocation Type	Multi-year Fund
Research Field	Naval and maritime engineering
Research Institution	The University of Tokyo
Principal Investigator	MURAYAMA Hideaki 東京大学, 大学院・工学系研究科, 准教授 (10361502)
Project Period (FY)	2011 – 2012
Keywords	材料 / 構造力学
Research Abstract	We applied invers analysis to identification of distributed loads on6-m CFRP wing structure and 1-m aluminum wind tunnel model. These structures were equipped with fiber-optic strain sensors and the applied loads were estimated based on strains measured by the sensors. Seven fiber-optic strain sensor arrays which have 30 ? 40FBGs in each were bonded on the wing in the longitudinal direction. Measured strains show excellent accuracy and the estimated load coincided with the actual one. In the wing tunnel model, the applied pressure distribution could be also estimated by several fiber-optic strain sensors which can measure strain at an arbitrary position along fibers.

(4 results)