Detectability of delamination in CFRP strengthened members by thermography

J. Gu, S. Unjoh

研究成果: Conference contribution

抄録

This paper focuses on a non-destructive testing technique, infrared thermography, which is used to detect delaminations in concrete structures strengthened by CFRP jacketing. Four Specimens were designed and manufactured based on an existing bridge strengthened by CFRP jacketing. The conditions of the artificial delaminations in specimens, including size and depth, presence of surface cover mortar, and water content in the delamination void, were considered as test parameters. FEM simulations by using the Finite Element Model were also conducted and the limit of detectable delamination was discussed according to parametrical analysis. The results show that the existence of cover mortar, the size and depth of delamination have the most marked influence on the detectability, and the distinction of delamination was difficult when the delamination voids are fulfilled with water. The results of simulation and experiment show good agreements, and the lower limit of detectable size was presented.

本文言語English
ホスト出版物のタイトルBridge Maintenance, Safety, Management, Life-Cycle Sustainability and Innovations - Proceedings of the 10th International Conference on Bridge Maintenaince, Safety and Management, IABMAS 2020
編集者Hiroshi Yokota, Dan M. Frangopol
出版社CRC Press/Balkema
ページ3959-3964
ページ数6
ISBN(電子版)9780367232788
DOI
出版ステータスPublished - 2021
イベント10th International Conference on Bridge Maintenaince, Safety and Management, IABMAS 2020 - Sapporo, Japan
継続期間: 2021 4 112021 4 15

出版物シリーズ

名前Bridge Maintenance, Safety, Management, Life-Cycle Sustainability and Innovations - Proceedings of the 10th International Conference on Bridge Maintenaince, Safety and Management, IABMAS 2020

Conference

Conference10th International Conference on Bridge Maintenaince, Safety and Management, IABMAS 2020
国/地域Japan
CitySapporo
Period21/4/1121/4/15

ASJC Scopus subject areas

  • 土木構造工学
  • 安全性、リスク、信頼性、品質管理

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