TY - GEN
T1 - Fatigue behavior of CFRP repaired non-load carrying cruciform welded joints
AU - Chen, Tao
AU - Gu, Xianglin
AU - Zhao, Xiaoling
PY - 2011
Y1 - 2011
N2 - In recent years, large amount of research has been conducted on carbon fibre reinforced polymer (CFRP) strengthening of steel members. There is very limited work on CFRP strengthening of welded connections. This paper reports an experimental study on the use of CFRP sheets to rehabilitate non-load carrying cruciform welded joints subjected to fatigue loading. Failure modes and corresponding fatigue lives were rec-orded during tests. Thereafter, series of numerical analyses were performed to understand the effects of weld toe radius, layer of CFRP sheets and Young's modulus of reinforced materials on local stress concentration at weld toe. It was found that fatigue life of such welded connections can be enhanced by CFRP sheets. A para-metric study was also carried out. It was found that the weld toe radius and the number of CFRP layers are the key parameters influencing the stress concentration factors of such joint.
AB - In recent years, large amount of research has been conducted on carbon fibre reinforced polymer (CFRP) strengthening of steel members. There is very limited work on CFRP strengthening of welded connections. This paper reports an experimental study on the use of CFRP sheets to rehabilitate non-load carrying cruciform welded joints subjected to fatigue loading. Failure modes and corresponding fatigue lives were rec-orded during tests. Thereafter, series of numerical analyses were performed to understand the effects of weld toe radius, layer of CFRP sheets and Young's modulus of reinforced materials on local stress concentration at weld toe. It was found that fatigue life of such welded connections can be enhanced by CFRP sheets. A para-metric study was also carried out. It was found that the weld toe radius and the number of CFRP layers are the key parameters influencing the stress concentration factors of such joint.
UR - http://www.scopus.com/inward/record.url?scp=84896444180&partnerID=8YFLogxK
U2 - 10.1007/978-3-642-17487-2_200
DO - 10.1007/978-3-642-17487-2_200
M3 - Conference article published in proceeding or book
AN - SCOPUS:84896444180
SN - 9783642174865
T3 - Advances in FRP Composites in Civil Engineering - Proceedings of the 5th International Conference on FRP Composites in Civil Engineering, CICE 2010
SP - 907
EP - 910
BT - Advances in FRP Composites in Civil Engineering - Proceedings of the 5th International Conference on FRP Composites in Civil Engineering, CICE 2010
PB - Springer Berlin Heidelberg
T2 - 5th International Conference on FRP Composites in Civil Engineering, CICE 2010
Y2 - 27 September 2010 through 29 September 2010
ER -