Detection and measurement of surface cracks by the ultrasonic method for evaluating fatigue failure of metals

The problem of measuring the dimensions of safe cracks by the acoustic method was considered on the basis of the concept of safe cracks. The results of investigations are presented and the obtained data on the detection and measurement of the depth of surface cracks using Rayleigh waves at artificial reflectors of the surface-notch type and at real cracks and specimens, which are subjected to cyclic loads during the “growth” of fatigue cracks, are analyzed.     

An investigation of imported ionites for treating natural waters with high contents of organic impurities

We present results from laboratory investigations and industrial tests of imported ion-exchange resins, including cationites C-100 (ppC-100 and pFC-100), C-104 (pFC-104), and C-400 (pFC-400); anionites A-100 (pFA-100) and A-400 (pFA-400) produced by Purolite; and organic-intensive anionites IRA-67 and IRA-900 produced by Room &; Hass, carried out under conditions in which natural waters with a high content of organic impurities had to be treated. Main characteristics of some ionites, obtained from long-term commercial operation of the former, are given.     

Resolution of the Problem of Expanded Clay Rubble Dust Formation

Refractories and Industrial Ceramics - Sources of powdered waste in processing clay and other ceramic raw materials for crushing and screening complexes are crushers, screens, and transfer units. A...     

Substantiation of fatigue life of hydraulic equipment with allowance for crack-type defects and damages

Problems associated with substantiation of reserve fatigue life are examined with consideration given to defects and damages. __________ Translated from Gidrotekhnicheskoe Stroitel’stvo, No. 7, pp. 38–45, July, 2006.     

Assurance of highly reliable basic subassemblies for hydraulic-turbine equipment

A number of suggestions directed toward assurance of high reliability for components of hydraulic-turbine equipment operating under vibration-induced loads and a corrosive medium are examined.