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2002 Fiscal Year Final Research Report Summary

Plug & Monitor Type Delamination Diagnostic CFRP Structure System using Electric Resistance Change Method

Research Project

Project/Area Number 13650075
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Materials/Mechanics of materials
Research InstitutionTokyo Institute of Technology

Principal Investigator

TODOROKI Akira  Tokyo Institute of Technology, Mechanical Sciences and Engineering, Associate Professor, 大学院・理工学研究科, 助教授 (50211397)

Co-Investigator(Kenkyū-buntansha) SHIMAMURA Yoshinobu  Tokyo Institute of Technology, Mechanical Sciences and Engineering, Research associate, 大学院・理工学研究科, 助手 (80272673)
Project Period (FY) 2001 – 2002
KeywordsComposites / Delamination / Monitor / Damage
Research Abstract

Delamination of laminated composites is usually invisible or difficult to detect visually. Delamination causes low reliability for primary structures. Automatic systems for in-service delamination identifications are desired to improve low reliability. The present study employs an electric resistance change method for delamination detection. Since the method adopts reinforcement carbon fiber itself as sensors for delamination detection, this method does not reduce static or fatigue strength ; also, the method is applicable to existing structures. Authors have found that the electric resistance change method with response surfaces is very effective experimentally and analytically. However, a large error of estimation remains for estimation of delamination location. In the present study, a new data processing procedure is proposed to improve performance of estimations of delamination location. The new method is applied to laminated composite beams. A delamination crack of a laminated composite beam is monitored with the new method using FEM analyzes. As a result, the method reveals excellent performance of estimations of delamination location even for new data not used in regression equations.

  • Research Products

    (1 results)

All Other

All Publications (1 results)

  • [Publications] 轟章, 田中美帆, 島村佳伸, 小林英男: "電気抵抗変化法のCFRP積層板の知的はく離検出法におけるはく離形状の影響解析"日本複合材料学会誌. 29. 113-119 (2003)

    • Description
      「研究成果報告書概要(和文)」より

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Published: 2004-04-14  

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