Stress Intensity Factor Calculation in Cracked Aluminum PlatesRepaired with Various Composite Patch Configurations

Plates used as bearing structures in aircrafts usually suffer from defects as cracks. Therefore they should be either replaced or repaired somehow.In the present study, the effect of adhesively-bonded repair patch on stress intensity factor (SIF) is investigated for different crack types (semi-elliptical, through-thickness) located at the center of a rectangular aluminum plate. Results show that repaired plated have significantly lower SIF than unrepaired ones. Also it was seen that double-sided patches have much higher effect on SIF than singlesidedones. The structure is numerically modeled using ABAQUS and ZENCRACK followed by a finite element analysis to calculate J contour integrals and indeed SIF.

کلیدواژه ها:

Stress intensity factor ، Crack ، Repair patch ، Zencrack