Abstract
The authors are attempting the identification of damaged unit in Advanced Grid Structure (AGS), whose ribs are made of carbon fiber reinforced plastic (CFRP) unidirectional laminates, by monitoring strain conditions using fiber Bragg grating sensors embedded in all ribs. In this research, three ・point bending tests were conducted to an intact specimen and a damaged specimen in order to investigate whether a strain distribution changed when a damage appeared in the AGS. Then, for the simulation of the strain distribution in the damaged grid structure, two types of analytical models were investigated; equivalent stiffness model (ESM) and exact model.
