Damage in GFRPs due to Low Velocity Impact at Low Temperatures

In order to study the impact behavior of glass/epoxy laminated composites, many test specimens are fabricated from glass fibers and epoxy matrix using hand layup method. Experimental analyses at different energy levels under variable temperatures in the range of -30 °C to 23 °C are performed. The configuration of laminates is quasi-isotropic. The effects of low temperatures on failure mode and energy absorption of composite specimens are investigated experimentally. Also the effects of exposure time at low temperatures on impact response of specimens are highlighted. Failure mechanisms of specimens are examined using microscopic examinations. Results indicated that impact performance (energy absorption and failure mechanism) of these composites is affected over the range of temperature considered

کلیدواژه ها:

Polymeric composites ، low temperature effects ، impact test ، energy absorption