MECHANICAL ANALYSIS OF PULLOUT ADHESION TEST METHOD

The ''pullout'' adhesion test in the reinforced plastics has some rest rictions. The result of these tests depends on geometry of samples and the physical conditions of the testing. This paper represents an atte mpt to analyze this complex phenomenon. It is shown that the stress de pends on the specific properties of boundary layers between the fiber and the polymer matrix. Experimental and theoretical investigations of adhesive strength were carried out in connection with the length of a sample, diameter of a fiber, test temperature and the level of polyme r hardening.