Abstract
Effects of aging on lengthwise fracture in a continuously inhomogeneous double cantilever beam configuration which exhibits elastic-plastic behavior is studied analytically in terms of the strain energy release rate. The material is continuously inhomogeneous along the height, width and length of the beam structure. The external loading consists of two bending moments applied at the free ends of crack arms. A solution to the strain energy release rate is derived by analyzing the beam complementary strain energy with considering the aging of the inhomogeneous material. In order to verify the non-linear time-dependent solution derived, the strain energy release rate is obtained also by analyzing the balance of the energy. The solution derived is applied to investigate the variation of the strain energy release rate with the time due to the aging of the material. The effects of inhomogeneity along the height, width and length of the beam on the fracture are investigated too.
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