2011 Fiscal Year Final Research Report

Study on Debonding Detection for Concrete Retrofitted Sheet Using Optical Fiber Sensor

Research Project

Project/Area Number	21681023
Research Category	Grant-in-Aid for Young Scientists (A)
Allocation Type	Single-year Grants
Research Field	Social systems engineering/Safety system
Research Institution	鹿島建設株式会社技術研究所 (2011) Kajima Technical Research Institute, Kajima Corporation (2009-2010)
Principal Investigator	IMAI Michio 鹿島建設株式会社技術研究所, 先端メカトロニクスグループ, 主任研究員 (20399702)
Project Period (FY)	2009 – 2011
Keywords	安全システム
Research Abstract	To monitor retrofitted sheet on the surface of aging concrete structure, debonding detection for the sheet is studied using advanced optical fiber strain sensor, which is able to measure strain distribution along the whole sensing fiber. At the debonded region, because no stress is transferred from the host structure to the retrofitted sheet, strain on the sheet remains constant. In this study, installation of the sensing fiber into the sheet is developed and experimentally validated to detect debonding using optical fiber strain sensor. Additionally, the measured interfacial stress-strain model is examined.

(3 results)