24 August 2009 Experimental study on fatigue crack propagation rate of RC beam strengthened with carbon fiber laminate
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Proceedings Volume 7375, ICEM 2008: International Conference on Experimental Mechanics 2008; 73750Z (2009) https://doi.org/10.1117/12.839042
Event: International Conference on Experimental Mechanics 2008 and Seventh Asian Conference on Experimental Mechanics, 2008, Nanjing, China
Abstract
The experimental research on fatigue crack propagation rate of reinforced concrete (RC) beams strengthened with carbon fiber laminate (CFL) is carried out by MTS system in this paper. The experimental results show that, the main crack propagation on strengthened beam can be summarized into three phases: 1) fast propagation phase; 2) steady propagation and rest phase; 3) unsteady propagation phase. The phase 2-i.e. steady propagation and rest stage makes up about 95% of fatigue life of the strengthened beam. The propagation rate of the main crack, da/dN, in phase 2 can be described by Paris formula, and the constant C and m can be confirmed by the fatigue crack propagation experiments of the RC beams strengthened with CFL under three-point bending loads.
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Peiyan Huang, Guangwan Liu, Xinyan Guo, Man Huang, "Experimental study on fatigue crack propagation rate of RC beam strengthened with carbon fiber laminate", Proc. SPIE 7375, ICEM 2008: International Conference on Experimental Mechanics 2008, 73750Z (24 August 2009); doi: 10.1117/12.839042; https://doi.org/10.1117/12.839042
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