Drilling of polymeric composites calls for online monitoring of process indicators, least the drilling of composite parts should experience delamination / debonding. The main contributing factor for such defects is drill thrust. Hence for thrust constrained drilling techniques such as modifying drill point, including web-thinning, Zherov point, tripod drill and vibration assisted drilling have been implemented. The present study illustrates a new method for defect constrained drilling. Drilling trials were performed on glass fiber reinforced plastics using high speed steel drill. By inducing strain toughening in polymeric composite, it is possible to bring down the drill thrust and consequently the defects. The main concept of induced vibration to the work piece before drilling was to induce stiffness in the material before drilling.