Evaluation of bonded and bolted repair techniques with finite element method

In this study, the efficiencies of the patch were checked under mechanical forces using an analytical method for bonded and bolted repairing methods using composite single lap joint, and also compared these analytical results with previous experimental studies.In the present analytical investigation, glue method was used for bonding and contact-target for bolted repairing. Every material was assumed to be linear isotropic. Central processor unit process time of bolted study was longer than the bonded one. The measured and predicted strain values were in agreement, verifying the accuracy of the predicted tensile loads.For lower loads, glued repairing was obtained as homogeneous load distribution, but bolted repairing as heterogeneous. As a result of this study, the bonded repair was found to be better than the bolted one for repairing of composite single lap joint.