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Repair of steel structures by bonded carbon fibre reinforced polymer patching: Experimental and numerical study of carbon fibre reinforced polymer - Steel double-lap joints under tensile loading
Lam A.C.C.1; Cheng J.J.R.1; Yam M.C.H.2; Kennedy G.D.1
2007-12-01
Source PublicationCanadian Journal of Civil Engineering
ISSN03151468
Volume34Issue:12Pages:1542-1553
Abstract

The behavior of carbon fibre reinforced polymer (CFRP) composite bonded to a steel plate double-lap joint was investigated experimentally. A total of 19 specimens were tested with the major test parameters being the bonded lap length, L, and the axial adherend stiffness ratio, ETR. Five of the 19 specimens were prepared using CFRP sheets, and the rest using CFRP plates. Two CFRP plate specimens were prepared with a tapered lap joint, and their results were compared with those of counterpart specimens prepared without tapered lap joints. In general, the behavior of specimens made from either CFRP sheets or CFRP plates were similar. The joint's axial load carrying capacity increased with increasing L up to a certain limit, when the joint's load carrying capacity could no longer be increased by increasing L. However, experimental results showed that a larger failure deformation could be achieved by increasing L past this limit. Specimens that had the same inner adherend thickness but higher axial adherend stiffness ratios showed higher axial load carrying capacities. Test results also showed that the strengths of tapered lap joints were almost the same as those of nontapered lap joints with the same L. Nonlinear finite element analysis was carried out to study the stress-strain, behavior of the adherend and the adhesive of the double-lap joint. Using finite element analysis results in an analytical solution obtained from the literature, predictions of the joint's maximum axial strength and minimum, required L were made. This analytical solution provided good predictions when, compared with test results, producing test to predicted ratios from 0.88 to 1.14. © 2007 NRC Canada.

KeywordCarbon Fibre Reinforced Polymer (Cfrp) Cfrp Plate Cfrp Sheet Finite Element Analysis Lap Joint Patching Repair Steel Elements Stiffness Ratio Tensile Strength Tests
DOI10.1139/L07-074
URLView the original
Indexed BySCI
Language英语
WOS Research AreaEngineering
WOS SubjectEngineering, Civil
WOS IDWOS:000253285600003
Fulltext Access
Citation statistics
Cited Times [WOS]:17   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionDEPARTMENT OF CIVIL AND ENVIRONMENTAL ENGINEERING
Corresponding AuthorCheng J.J.R.
Affiliation1.University of Alberta
2.Hong Kong Polytechnic University
Recommended Citation
GB/T 7714
Lam A.C.C.,Cheng J.J.R.,Yam M.C.H.,et al. Repair of steel structures by bonded carbon fibre reinforced polymer patching: Experimental and numerical study of carbon fibre reinforced polymer - Steel double-lap joints under tensile loading[J]. Canadian Journal of Civil Engineering,2007,34(12):1542-1553.
APA Lam A.C.C.,Cheng J.J.R.,Yam M.C.H.,&Kennedy G.D..(2007).Repair of steel structures by bonded carbon fibre reinforced polymer patching: Experimental and numerical study of carbon fibre reinforced polymer - Steel double-lap joints under tensile loading.Canadian Journal of Civil Engineering,34(12),1542-1553.
MLA Lam A.C.C.,et al."Repair of steel structures by bonded carbon fibre reinforced polymer patching: Experimental and numerical study of carbon fibre reinforced polymer - Steel double-lap joints under tensile loading".Canadian Journal of Civil Engineering 34.12(2007):1542-1553.
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