Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.3/228063

Title

Effects of CFRP bond locations on the Mode I stress intensity factor of centre-cracked tensile steel plates

Author(s)

Wu, Chao;  Zhao, Xiao Ling;  Al-Mahaidi, Riadh;  Duan, Wen Hui

Abstract

The fatigue life of cracked steel members can be greatly extended by externally attached carbon fibre reinforced plastics (CFRP), which reduces the stress intensity factors (SIFs) at the crack tip. Access to cracks is sometimes limited and the CFRP has to be attached away from the cracks. There is a lack of knowledge on SIFs for such strengthening scheme. This paper presents the effects of CFRP bond locations on the Mode I SIF of centre-cracked tensile (CCT) steel plate. The Mode I SIF at the crack tip is calculated using the finite element (FE) models. A correction factor is introduced as a function of CFRP bond location and crack length. The FE results are compared and agree well with experimental tests conducted by the authors. By combining with another two factors (one considering CFRP mechanical properties and the other considering CFRP bond width) derived previously by the authors, SIF formulae are proposed for CFRP reinforced CCT steel plates.

Publication type

Journal article

Research centre

Swinburne University of Technology. Faculty of Engineering and Industrial Sciences

Source

Fatigue and Fracture of Engineering Materials and Structures, Vol. 36, no. 2 (Feb 2013), pp. 154-167

Publication year

2013

FOR Code(s)

0905 Civil Engineering;  0912 Materials Engineering;  0913 Mechanical Engineering

Keyword(s)

Carbon fibre reinforced plastics;  Composite patch repair;  Fatigue crack propagation;  Finite element modelling;  Fracture mechanics;  Steel;  Stress intensity factor

Publisher

Wiley-Blackwell Publishing

ISSN

8756-758X

Publisher URL

http://dx.doi.org/10.1111/j.1460-2695.2012.01708.x

Copyright

Copyright © 2012 Wiley Publishing Ltd.

Peer reviewed