A wide range stress intensity factor solution for an eccentrically cracked middle tension specimen with clamped ends

A wide range KI solution has been developed for an eccentrically cracked middle tension specimen with clamped ends. In the derivation of the KI solution, an equivalent model was developed; weight functions for eccentric cracks in a finite-width strip were utilized, with approximate closed form KI and plate-end displacement solutions obtained. Good agreements between the approximate solutions and corresponding FEM results were observed over a wide range of eccentricities and crack lengths. The accuracy of the KI solution was analyzed under different aspect ratio conditions, with the applicability of the approximate solutions given. The equivalent model was also discussed.