Paper Details

Stress intensity factor is used in fracture mechanics to predict the stress state or stress intensity near the tip ofa crack caused by a remote load or residual stresses. The stress intensity factor is a single-parameter characterization ofthe crack tip stress field. For a body with a crack and known boundary conditions, once the stress intensity factor isdetermined one can predict whether the a crack in the component is likely to grow or not. Reduction of stress intensityfactor can prevent crack from propagation. The paper presents the method of reducing stress intensity factor for a finitelength plates by introducing auxiliary holes, the analysis is done by using the finite element method. The finite elementanalysis program used is the ABAQUS®6.13. It has been found out that the stress intensity factor is reduced byintroducing an auxiliary hole in the plate. The result shows that the stress intensity factor is significantly reduced whenthe auxiliary holes are nearer to the crack. The variation of the stress intensity factor with diameter of the hole is alsostudied. The result shows that the stress intensity factor is significantly reduced when the diameter of the holes reduces.

Sammon Korah, Rakesh Reghunath, “REDUCTION OF STRESS INTENSTITY FACTOR FOR A CENTRAL CRACKED PLATE”, International Journal of Advance Engineering and Research Development (IJAERD), Vol. 1, Issue 11, pp. 49-54, November 2014.