Effect of stiffness loading system on the equilibrium of the crack growth under quasi-static loading

The problems of the experimental study of the behavior of aluminum alloy D16T, depending on the mode of loading and stiffness of the loading system. The features of the crack growth in the kinematic and force loading. Produced uniaxial loading of flat samples with pre-germinated fatigue crack and different length of the working part. Shows stress-strain diagram. Tests performed on the servohydraulic testing machine Instron 8850, identifies yield strength and ultimate strength of the material. To measure the crack length was used Digital Microscope Dino-Lite Dicital Microscope AM4013MTL Series. A significant effect of the rigidity of the loading system on the mechanical behavior of an aluminum alloy D16T under quasi-static loading.