njit-etd2003-032 - New Jersey Institute of Technology

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(CFRP debonding) through a simple model to account for partial shear transfer by CFRP
debonding.
Based on mostly qualitative arguments, Triantafillou (1998) derived a polynomial
function that related the strain in the FRP at shear failure of the member, defined as
effective strain, to the axial rigidity of externally bonded strips or sheets.
In a recent study, Khalif et al. (1998) used a slightly modification of
Triantafillou's equation (1998) (calibrated with more test results, including both FRP
rupture and debonding) to describe shear failure combined with FRP rupture. Meanwhile,
the bond model of Maeda et al. (1997) was used to describe shear failure combined with
FRP debonding. The two models were then presented in the AC1 shear design format.