TY - JOUR
T1 - Effect of mechanical anchorage on the bond performance of double overlapped CFRP-to-steel joints
AU - Yang, Yongming
AU - Zhao, Jun
AU - Zhang, Shishun
AU - Chastre, Carlos
AU - Biscaia, Hugo
N1 - Funding Information:
The first author is grateful for the support provided by the National Natural Science Foundation of China (NSFC) with Grant No. 52008378. The second author would like acknowledge the financially support by the Program for Innovative Research Team of Education Ministry of China (IRT_16R67) and Thousand Talents Plan in Henan Province (ZYQR201912029). The last author would like to acknowledge also the support of Funda??o para a Ci?ncia e Tecnologia (FCT) for the partial funding of this work under the strategic project UIDB/EMS/00667/2020. The raw/processed data required to reproduce these findings cannot be shared at this time as the data also forms part of an ongoing study.
Funding Information:
The first author is grateful for the support provided by the National Natural Science Foundation of China (NSFC) with Grant No. 52008378 . The second author would like acknowledge the financially support by the Program for Innovative Research Team of Education Ministry of China (IRT_16R67) and Thousand Talents Plan in Henan Province (ZYQR201912029). The last author would like to acknowledge also the support of Fundação para a Ciência e Tecnologia (FCT) for the partial funding of this work under the strategic project UIDB/EMS/00667/2020.
Publisher Copyright:
© 2021 Elsevier Ltd
PY - 2021/7/1
Y1 - 2021/7/1
N2 - Mechanical anchorage devices have the potential to efficiently improve the bond behavior of Carbon Fiber-Reinforced Polymers (CFRP) Externally Bonded (EB) onto steel with an adhesive. Existing relevant studies, however, have been very limited. Against this background, experimental and numerical studies on the double overlapped CFRP-to-steel bonded joints with an end mechanical anchorage were carried out in the present study. Two types of CFRP laminates (i.e., SIKA CFRP and the other type made in Harbin Institute of Technology – HIT) were used in the bond tests, with or without end mechanical anchorage devices. The test results showed that the end mechanical anchorage had marginal effect on the bond-slip relationship between EB CFRP and steel as well as debonding load, but could increase the ultimate load. It was also found that CFRP laminate from HIT had a better bond performance than that from SIKA, in terms of both debonding load and ultimate load. Using ABAQUS, Finite Element (FE) model was established on such bonded joints and the accuracy was verified with test results. The verified FE model was adopted in a parametric study to further clarify the effect of key parameters on the bond behavior of such bonded joints.
AB - Mechanical anchorage devices have the potential to efficiently improve the bond behavior of Carbon Fiber-Reinforced Polymers (CFRP) Externally Bonded (EB) onto steel with an adhesive. Existing relevant studies, however, have been very limited. Against this background, experimental and numerical studies on the double overlapped CFRP-to-steel bonded joints with an end mechanical anchorage were carried out in the present study. Two types of CFRP laminates (i.e., SIKA CFRP and the other type made in Harbin Institute of Technology – HIT) were used in the bond tests, with or without end mechanical anchorage devices. The test results showed that the end mechanical anchorage had marginal effect on the bond-slip relationship between EB CFRP and steel as well as debonding load, but could increase the ultimate load. It was also found that CFRP laminate from HIT had a better bond performance than that from SIKA, in terms of both debonding load and ultimate load. Using ABAQUS, Finite Element (FE) model was established on such bonded joints and the accuracy was verified with test results. The verified FE model was adopted in a parametric study to further clarify the effect of key parameters on the bond behavior of such bonded joints.
KW - Bond
KW - CFRP
KW - Mechanical anchorage
KW - Steel
UR - http://www.scopus.com/inward/record.url?scp=85103634899&partnerID=8YFLogxK
U2 - 10.1016/j.compstruct.2021.113902
DO - 10.1016/j.compstruct.2021.113902
M3 - Article
AN - SCOPUS:85103634899
SN - 0263-8223
VL - 267
JO - Composite Structures
JF - Composite Structures
M1 - 113902
ER -