TY - GEN
T1 - Improved bond behavior of CFRP-steel composites by novel film adhesive at room and elevated temperatures
AU - Ke, L.
AU - Li, C. X.
AU - He, J.
AU - Chen, Z. Y.
AU - Dong, S.
AU - Zhou, J. L.
AU - Jiao, Y.
N1 - Publisher Copyright:
© 2021 Taylor & Francis Group, London
PY - 2021
Y1 - 2021
N2 - A novel film adhesive was proposed to bond carbon fiber reinforced polymer (CFRP) laminas to steel substrates to improve comprehensive bonding performances in terms of bond strength, toughness and high-temperature behavior. This film adhesive was shown to possess excellent high-temperature resistance via dynamic mechanical analysis (DMA). CFRP-steel double-lap joints (DLJs) were experimentally studied at room and elevated temperatures, focusing on the failure modes, effective bond length, bond-slip relationship, and bond strength. The results show that the film-adhesive bonded joints failed with CFRP delamination. The bonding interface has an effective bond length of approximately 65 mm, beyond which no increase of ultimate load can be achieved with the increase of bond length. The bond-slip relationship of the film-adhesive bonding interface exhibits a trapezoidal (ductile) shape at room temperature (25℃), which transfers to bilinear or bilinear-like shapes at elevated temperatures. It is also found that the joint bond strength can retain 96% at 70℃ compared with that at 25℃. In all, bonding interfaces with superior strength, ductility, and high-temperature resistance in CFRP-steel composites are achieved by using the new film adhesive.
AB - A novel film adhesive was proposed to bond carbon fiber reinforced polymer (CFRP) laminas to steel substrates to improve comprehensive bonding performances in terms of bond strength, toughness and high-temperature behavior. This film adhesive was shown to possess excellent high-temperature resistance via dynamic mechanical analysis (DMA). CFRP-steel double-lap joints (DLJs) were experimentally studied at room and elevated temperatures, focusing on the failure modes, effective bond length, bond-slip relationship, and bond strength. The results show that the film-adhesive bonded joints failed with CFRP delamination. The bonding interface has an effective bond length of approximately 65 mm, beyond which no increase of ultimate load can be achieved with the increase of bond length. The bond-slip relationship of the film-adhesive bonding interface exhibits a trapezoidal (ductile) shape at room temperature (25℃), which transfers to bilinear or bilinear-like shapes at elevated temperatures. It is also found that the joint bond strength can retain 96% at 70℃ compared with that at 25℃. In all, bonding interfaces with superior strength, ductility, and high-temperature resistance in CFRP-steel composites are achieved by using the new film adhesive.
UR - http://www.scopus.com/inward/record.url?scp=85117590171&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85117590171&partnerID=8YFLogxK
U2 - 10.1201/9780429279119-190
DO - 10.1201/9780429279119-190
M3 - Conference contribution
AN - SCOPUS:85117590171
SN - 9780367232788
T3 - Bridge Maintenance, Safety, Management, Life-Cycle Sustainability and Innovations - Proceedings of the 10th International Conference on Bridge Maintenance, Safety and Management, IABMAS 2020
SP - 1395
EP - 1402
BT - Bridge Maintenance, Safety, Management, Life-Cycle Sustainability and Innovations - Proceedings of the 10th International Conference on Bridge Maintenance, Safety and Management, IABMAS 2020
A2 - Yokota, Hiroshi
A2 - Frangopol, Dan M.
PB - CRC Press/Balkema
T2 - 10th International Conference on Bridge Maintenance, Safety and Management, IABMAS 2020
Y2 - 11 April 2021 through 15 April 2021
ER -