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

插头

• 批准号: 13650075
• 负责人: TODOROKI Akira
• 金额: $ 2.3万
• 依托单位: Tokyo Institute of Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2001
• 资助国家: 日本
• 起止时间: 2001 至 2002
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-13650075/
• 关键词: Composites; Delamination; Monitor; Damage

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.

复合材料层合板的脱层通常是不可见的或难以目视检测的。分层导致主结构可靠性低。期望用于在役分层识别的自动系统来改善低可靠性。本研究采用电阻变化法进行分层检测。由于该方法采用增强碳纤维本身作为分层检测的传感器，因此该方法不会降低静态或疲劳强度，并且该方法适用于现有结构。实验和分析表明，电阻变化响应面法是十分有效的。然而，分层位置的估计仍然存在很大的误差。在本研究中，提出了一种新的数据处理程序，以提高性能的分层位置的估计。将该方法应用于复合材料层合梁。用该方法对复合材料层合梁的分层裂纹进行了有限元分析。因此，即使对于回归方程中未使用的新数据，该方法也显示出分层位置估计的出色性能。

项目成果

A.Todoroki, Y.Tanaka, Y.Shimamura: "Delamination Monitoring for Quasi-Isotopic Laminated Plate for Carbon/Eposy Composites with Electric Resistance Change Method"Proceedings of the 10th US-JAPAN Conference on Composite Materials. 207-214 (2002)

A.Todoroki、Y.Tanaka、Y.Shimamura：“用电阻变化法监测碳/Eposy 复合材料准同位素层压板的分层”第十届美日复合材料会议论文集。

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)

Akira Todoroki、Miho Tanaka、Yoshinobu Shimamura、Hideo Kobayashi：“利用电阻变化法分析分层形状对 CFRP 层压板智能分层检测方法的影响”日本复合材料学会学报 29. 113-119（ 2003）

A.Todoroki, M.Tanaka, Y.Shimamura: "Matrix Craking Effect on Delanination Monitoring with Electric Resistance Change Method"Proceedings of the 10th US-JAPAN Conference on Composite Materials. 155-161 (2002)

A.Todoroki、M.Tanaka、Y.Shimamura：“用电阻变化法监测分层的基体开裂效应”第十届美日复合材料会议论文集。