美国《工程索引》核心期刊
中国科学引文数据库核心期刊
国际刊号:ISSN 1005-1120
国内刊号:CN 32-1389/V
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  • 主管:工业和信息化部
  • 主办:南京航空航天大学
  • 国际刊号:ISSN 1005-1120
  • 国内刊号:CN 32-1389/V
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Xu Ying, Wang Dexiang, Tang Tianyou, Lu Miaomiao.Debonding Patch Detection in FRP Strengthened Materials with Fiber Optic Interferometer[J].南京航空航天大学学报英文版,2017,34(3):255-264
Debonding Patch Detection in FRP Strengthened Materials with Fiber Optic Interferometer
  
DOI:
中文关键词:  
英文关键词:fiber reinforced plastic( FRP); bonded repair; debonding patch; fiber optic interferometer; nondestructive testing
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作者单位
Xu Ying, Wang Dexiang, Tang Tianyou, Lu Miaomiao Shenzhen Key Lab of Urban & Civil Engineering Disaster Prevention & Reduction, Harbin Institute of Technology Shenzhen Graduate School, Shenzhen 518055, P.R.China 
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中文摘要:
      
英文摘要:
      The interfacial debonding in fiber reinforced plastic(FRP) strengthened repair material will affect the bonding strength and lead to failure of the repair without warning. Unfortunately the interfacial damage is normally invisible and often in the form of a patch rather than a through width crack. Therefore, a debonding patch detection technique based on fiber optic interferometry is proposed. A quasi impulse loading is applied with a rubber head hammer and the total elongation of a surface mounted optical fiber along the length of the repair material is measured as a function of load position. When a debonding patch is present, the induced sudden slope or sign change on the plot of fiber integral strain v.s. load position will reveal the extent and the location of the debonded area. The results of the study indicate that the proposed technique is applicable for debonding patch detection in repaired members under various support conditions.
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