GLASS/EPOXY INTERPHASE RESPONSE UNDER HIGH LOADING RATES

摘要

The effects of loading rate on the mechanical properties of the E-glass-fiber/epoxy-arhine interphase was investigated. The apparatus, Dynamic Interphase-Loading Apparatus (DILA) was used to load the glass/epoxy interphase under high loading rates. The displacement rates of up to 3935μm/sec were achieved using the fast expansion capabilities of the piezoelectric actuators. Test results showed that the strength and energy absorbing ability of glass/epoxy interphase is sensitive to the loading rate. The shear stress values were found to reach up to 328 MPa. It was also found that the amount of energy absorbed within the interphase significantly increases at high rate of loading.