Cutting Edge Geometry Effect on Plastic Deformation of Titanium Alloy

The paper presents experimental studies of ОТ4 titanium alloy machining with cutting edges of various geometry parameters. Experiments were performed at a low speed by the scheme of free cutting. Intensity of plastic shear strain was set for defining of cutting edge geometry effect on machining. Images of chip formed are shown. Estimation of strain magnitude was accomplished with digital image correlation method. Effect of rake angle and cutting edge angle has been studied. Depth of deformed layer and the area of the plastic strain is determine. Results showed that increasing the angle of the cutting edge inclination results in a change the mechanism of chip formation

DISORDERS OF HIGHER PSYCHICAL FUNCTIONS IN ENCEPHALOPATHY OF DIFFERENT GENESIS

We examined the patients with encephalopathy of different genesis (vascular from the exposure of mercury and alcohol). Besides the comparison of clinical picture of disease the comparative analysis of psychological and neuropsychological indices was performed. The disorders of higher psychical functions revealed in patients with encephalopathy from different etiological factor may testify the dysfunction of subcortical-frontal systems that take part in the regulation of cognitive functions