Approximate Closed from Weight Function for an Elliptical Crack in an Infinite Body

It have been reported that in literature there exists some number of approximate closed form weight functions for elliptical crack in an infinite body. The general procedure for refining them by Rice's integral formula is suggested. A tentative formula obtained in this way has been numerically verified by a carefully elaborated procedure. For uniform loading the accuracy of suggested formula lies within 6 percent of the strict solution. The practical usage of the formula in the point weight function method for semi-elliptical crack is demonstrated.