Modernizing the Echo Method of Ultrasonic Flaw Detection

Russian Journal of Nondestructive Testing - WE consider a modernization of the echo method of ultrasonic flaw detection that uses one or several receiving transducers on the object’s lateral...     

Structure and Mechanical Properties of Al–Mg Alloy Workpieces in Multilayer Surfacing with Interlayer Deformation

Russian Engineering Research - Al–Mg alloy samples are produced by multilayer surfacing according to various strategies, with and without interlayer deformation. The samples undergo tensile...     

The efficiency of liquid scintillators in the determination of the tritium concentration of A water sample

Scientific Production Company Monokristallreaktiv. Khar'kov State University. Translated from Atomnaya Énergiya, Vol. 72, No. 4, pp. 405–407, April, 1992.     

Impact of features of control systems of the tunneling microscope on the measurement accuracy

A significant number of measurement errors of the surface nanotopography by a tunneling microscope is caused by features of the probe motion control. If the geometry of the needle tip is taken into account in the interpretation of measurements, it is possible to significantly reduce the influence of these errors. It is shown that the shape and size of the tip can be determined from the mathematical model of the scanning process using existing measurements of the nanotopography.     

Improving VT6 Titanium-Alloy Components Produced by Multilayer Surfacing

Russian Engineering Research - The influence of layer-by-layer forging and subsequent heat treatment on the structure and properties of VT6 titanium-alloy parts made by layer-by-layer surfacing is...     

Joystick control with reflection of the motion execution

A joystick with reflection of the motion execution is described. The joystick maintains specification of the motion along six degrees of freedom from a six-component force sensor and reflection of the motion execution with the help of a mobile platform, which is touched by the hand. The operator perceives the data on motion execution through the hand skin, becoming aware of the value of the deviation of the platform from the initial position. The distinction of the joystick design from the existing devices of six-component control with force reflection consists in the fact that the devices for specification and reflection of the motion are not kinematically connected. Because of this, the platform motion practically does not affect the operation of the task part of the joystick, which allows one to repeat even small deviations in a given motion. Original Russian Text ￠ V.A. Kartashev, 2006, published in Izvestiya Akademii Nauk. Teoriya i Sistemy Upravleniya, 2006, No. 2, pp. 167–171.