A STATISTICAL-ANALYSIS OF THE TENSILE FAILURE AND HYBRID EFFECT OF ANINTRAPLY HYBRID COMPOSITE

The random critical-core probability model is adapted to model a unidi rectionally arrayed hybrid sheet with alternating low elongation fiber s and high elongation fibers. Utilizing this model in conjunction with the results of the stress analysis by Fukuda and Chou, both the first failure and ultimate failure of the hybrid are analysed. The concept of the hybrid effect for strains has been clarified and quantitative e valuation of the part of the hybrid effect which is not of thermal ori gin has been done. Numerical results are compared with available exper imental data. A reasonable agreement is found between the analytical p redictions and the experimental results.