The role of thermal fatigue and open hole on the tensile performance of polymeric composites

In recent decades, the application of polymeric composites has been increased in aerospace industry. Where, the spacecrafts are subjected to temperature fluctuations. In present study, the tensile performance of carbon/epoxy laminated composites is investigated considering the effects of cyclic thermal fatigue and the open hole. Specimens were fabricated with lay-up arrangement of [90_2/±30/90_2 ]_T using Filament winding method. Two different hole diameter were considered to analyze the effects of the hole size. The samples were subjected to thermal fatigue condition. Then, a tensile test was done based on the ASTM D 2290-04. Experimental results showed that thermal cycling condition leads to reduction of tensile strength. It was observed that increment of thermal cycles decreases the tensile strength in un-notched specimens; while this variation in the open hole specimens is less than un-notched specimens. So, larger hole diameter shows less tensile strength variation.

کلیدواژه ها:

Polymeric composites ، Thermal fatigue ، Open hole ، Tensile behavior