Debonding strength of steel joints strengthened using strand CFRP sheets under axial tension

C. Taylor; H. Jiao; X. L. Zhao; A. Kobayashi

Debonding strength of steel joints strengthened using strand CFRP sheets under axial tension

C. Taylor, H. Jiao, X. L. Zhao, A. Kobayashi

Research output: Chapter in book / Conference proceeding › Conference article published in proceeding or book › Academic research › peer-review

2 Citations (Scopus)

Abstract

Strand CFRP sheets have the unique features of containing factory impregnated CFRP strands and having the flexibility that make strand sheets suitable for strengthening circular hollow sections along the longitudinal direction. Sufficient gaps are designed between the strands that can be easily filled with epoxy resin during a wet layup process. These features make strand CFRP sheets a promising alternative to conventional CFRP materials in strengthening metallic structures. In these applications, proper bonding between steel and CFRP is vital. Therefore the debonding mechanism and debonding strength are of interests to many researchers. In this study, strand CFRP sheets, with a nominal Young's modulus of 430GPa, were used for the connection of double trap steel joints. Tensile tests were conducted to investigate the bonding behaviour and bond strength. Different failure modes were observed for specimens with and without a primer layer. The bond strength and measured stresses in the bond region were compared with those reported by previous researchers.

Original language	English
Title of host publication	Proceedings of the 4th Asia-Pacific Conference on FRP in Structures, APFIS 2013
Editors	Scott T. Smith, Xiao-Ling Zhao, Yu Bai, Riadh Almahaidi
Publisher	International Institute for FRP in Construction (IIFC)
ISBN (Electronic)	9780987593016
Publication status	Published - 2013
Externally published	Yes
Event	4th Asia-Pacific Conference on FRP in Structures, APFIS 2013 - Melbourne, Australia Duration: 11 Dec 2013 → 13 Dec 2013

Publication series

Name	Proceedings of the 4th Asia-Pacific Conference on FRP in Structures, APFIS 2013

Conference

Conference	4th Asia-Pacific Conference on FRP in Structures, APFIS 2013
Country/Territory	Australia
City	Melbourne
Period	11/12/13 → 13/12/13

Keywords

Bond strength
Strand CFRP sheets
Strengthening

ASJC Scopus subject areas

Civil and Structural Engineering
General Materials Science

Cite this

Taylor, C., Jiao, H., Zhao, X. L., & Kobayashi, A. (2013). Debonding strength of steel joints strengthened using strand CFRP sheets under axial tension. In S. T. Smith, X.-L. Zhao, Y. Bai, & R. Almahaidi (Eds.), Proceedings of the 4th Asia-Pacific Conference on FRP in Structures, APFIS 2013 (Proceedings of the 4th Asia-Pacific Conference on FRP in Structures, APFIS 2013). International Institute for FRP in Construction (IIFC).

Taylor, C. ; Jiao, H. ; Zhao, X. L. et al. / Debonding strength of steel joints strengthened using strand CFRP sheets under axial tension. Proceedings of the 4th Asia-Pacific Conference on FRP in Structures, APFIS 2013. editor / Scott T. Smith ; Xiao-Ling Zhao ; Yu Bai ; Riadh Almahaidi. International Institute for FRP in Construction (IIFC), 2013. (Proceedings of the 4th Asia-Pacific Conference on FRP in Structures, APFIS 2013).

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title = "Debonding strength of steel joints strengthened using strand CFRP sheets under axial tension",

abstract = "Strand CFRP sheets have the unique features of containing factory impregnated CFRP strands and having the flexibility that make strand sheets suitable for strengthening circular hollow sections along the longitudinal direction. Sufficient gaps are designed between the strands that can be easily filled with epoxy resin during a wet layup process. These features make strand CFRP sheets a promising alternative to conventional CFRP materials in strengthening metallic structures. In these applications, proper bonding between steel and CFRP is vital. Therefore the debonding mechanism and debonding strength are of interests to many researchers. In this study, strand CFRP sheets, with a nominal Young's modulus of 430GPa, were used for the connection of double trap steel joints. Tensile tests were conducted to investigate the bonding behaviour and bond strength. Different failure modes were observed for specimens with and without a primer layer. The bond strength and measured stresses in the bond region were compared with those reported by previous researchers.",

keywords = "Bond strength, Strand CFRP sheets, Strengthening",

author = "C. Taylor and H. Jiao and Zhao, {X. L.} and A. Kobayashi",

note = "Publisher Copyright: {\textcopyright} 2013 International Institute for FRP in Construction.; 4th Asia-Pacific Conference on FRP in Structures, APFIS 2013 ; Conference date: 11-12-2013 Through 13-12-2013",

year = "2013",

language = "English",

series = "Proceedings of the 4th Asia-Pacific Conference on FRP in Structures, APFIS 2013",

publisher = "International Institute for FRP in Construction (IIFC)",

editor = "Smith, {Scott T.} and Xiao-Ling Zhao and Yu Bai and Riadh Almahaidi",

booktitle = "Proceedings of the 4th Asia-Pacific Conference on FRP in Structures, APFIS 2013",

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Taylor, C, Jiao, H, Zhao, XL & Kobayashi, A 2013, Debonding strength of steel joints strengthened using strand CFRP sheets under axial tension. in ST Smith, X-L Zhao, Y Bai & R Almahaidi (eds), Proceedings of the 4th Asia-Pacific Conference on FRP in Structures, APFIS 2013. Proceedings of the 4th Asia-Pacific Conference on FRP in Structures, APFIS 2013, International Institute for FRP in Construction (IIFC), 4th Asia-Pacific Conference on FRP in Structures, APFIS 2013, Melbourne, Australia, 11/12/13.

Debonding strength of steel joints strengthened using strand CFRP sheets under axial tension. / Taylor, C.; Jiao, H.; Zhao, X. L. et al.
Proceedings of the 4th Asia-Pacific Conference on FRP in Structures, APFIS 2013. ed. / Scott T. Smith; Xiao-Ling Zhao; Yu Bai; Riadh Almahaidi. International Institute for FRP in Construction (IIFC), 2013. (Proceedings of the 4th Asia-Pacific Conference on FRP in Structures, APFIS 2013).

Research output: Chapter in book / Conference proceeding › Conference article published in proceeding or book › Academic research › peer-review

TY - GEN

T1 - Debonding strength of steel joints strengthened using strand CFRP sheets under axial tension

AU - Taylor, C.

AU - Jiao, H.

AU - Zhao, X. L.

AU - Kobayashi, A.

PY - 2013

Y1 - 2013

N2 - Strand CFRP sheets have the unique features of containing factory impregnated CFRP strands and having the flexibility that make strand sheets suitable for strengthening circular hollow sections along the longitudinal direction. Sufficient gaps are designed between the strands that can be easily filled with epoxy resin during a wet layup process. These features make strand CFRP sheets a promising alternative to conventional CFRP materials in strengthening metallic structures. In these applications, proper bonding between steel and CFRP is vital. Therefore the debonding mechanism and debonding strength are of interests to many researchers. In this study, strand CFRP sheets, with a nominal Young's modulus of 430GPa, were used for the connection of double trap steel joints. Tensile tests were conducted to investigate the bonding behaviour and bond strength. Different failure modes were observed for specimens with and without a primer layer. The bond strength and measured stresses in the bond region were compared with those reported by previous researchers.

AB - Strand CFRP sheets have the unique features of containing factory impregnated CFRP strands and having the flexibility that make strand sheets suitable for strengthening circular hollow sections along the longitudinal direction. Sufficient gaps are designed between the strands that can be easily filled with epoxy resin during a wet layup process. These features make strand CFRP sheets a promising alternative to conventional CFRP materials in strengthening metallic structures. In these applications, proper bonding between steel and CFRP is vital. Therefore the debonding mechanism and debonding strength are of interests to many researchers. In this study, strand CFRP sheets, with a nominal Young's modulus of 430GPa, were used for the connection of double trap steel joints. Tensile tests were conducted to investigate the bonding behaviour and bond strength. Different failure modes were observed for specimens with and without a primer layer. The bond strength and measured stresses in the bond region were compared with those reported by previous researchers.

KW - Bond strength

KW - Strand CFRP sheets

KW - Strengthening

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M3 - Conference article published in proceeding or book

AN - SCOPUS:84961384158

T3 - Proceedings of the 4th Asia-Pacific Conference on FRP in Structures, APFIS 2013

BT - Proceedings of the 4th Asia-Pacific Conference on FRP in Structures, APFIS 2013

A2 - Smith, Scott T.

A2 - Zhao, Xiao-Ling

A2 - Bai, Yu

A2 - Almahaidi, Riadh

PB - International Institute for FRP in Construction (IIFC)

T2 - 4th Asia-Pacific Conference on FRP in Structures, APFIS 2013

Y2 - 11 December 2013 through 13 December 2013

ER -

Taylor C, Jiao H, Zhao XL, Kobayashi A. Debonding strength of steel joints strengthened using strand CFRP sheets under axial tension. In Smith ST, Zhao XL, Bai Y, Almahaidi R, editors, Proceedings of the 4th Asia-Pacific Conference on FRP in Structures, APFIS 2013. International Institute for FRP in Construction (IIFC). 2013. (Proceedings of the 4th Asia-Pacific Conference on FRP in Structures, APFIS 2013).

Debonding strength of steel joints strengthened using strand CFRP sheets under axial tension

Abstract

Publication series

Conference

Keywords

ASJC Scopus subject areas

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