Abstract
Based on the observation and interpretation of single-fibre pull-out results of E-glass fibre from low density polyethylene, a new theoretical model, incorporating the concepts of critical transition length, ultimate shear strength and a deduced stress distribution, was developed to predict the relationship between the debonding force and embedded fibre length for a well-bonded interface. With reasonable values of model parameters, better consistency between the new model and experimental results was achieved, compared with other existing models. The complete contribution of friction to debonding force was conclusively demonstrated to be insignificant compared with the contribution of plastic deformation.
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