Generalized concentration dependence of makromolecule selfdiffusion coefficients in polyethyleneoxide solutions

Summary The polyethyleneoxide (PEO) macroraolecule translational mobility in dioxane and benzene solutions was studied by pulsed field gradient nmr. The generalized dependence describing the macromolecule translational mobility in solutions — invariant with respect to the polymer molecular mass, solvent,as well as to temperature — was obtained.     

Additive Manufacturing with Ultrasound

Additive manufacturing methods are briefly reviewed. Proposals are outlined for the use of ultrasound in fused deposition modeling (FDM) and selective laser melting (SLM). Approaches to ultrasonic additive manufacturing (UAM) are discussed.     

Optimizing the Parameters of Ultrasonic Surface Plastic Deformation by a Free Steel Indenter

Russian Engineering Research - The influence of ultrasonic surface plastic deformation on the surface roughness and hardness is considered. The influence of the force applied to the deforming...     

Improving Rivet Performance by Ultrasonic Shock Treatment

Russian Engineering Research - The reliability of rivets is improved if the residual compressive stress is uniformly distributed over the joint thickness, with simultaneous decrease in the riveting...     

Improvement in Ultrasound Liquid Machining by Activating Cavitational Clusters

Russian Engineering Research - In the erosion-free zone that appears during high-amplitude ultrasound treatment, the useful work is mainly performed by cavitational clusters. In the absence of...     

Ultrasonic Assembly of Press-Fit Joints

The behavior of press-fit joints under the action of ultrasound is studied. The influence of ultrasound and the tightness of the joint on the quality of assembly is considered.     

The cooled blade assembly for the first three stages of the high-temperature turbine of a GTE-65 medium-capacity gas-turbine power-generating unit

We describe a comprehensive approach to solving the problems of design, preparation of production facilities, manufacturing, and finishing of the blade assembly for a high-temperature gas turbine.     

Cooled turbine blades in the GTÉ-65 gas turbine power unit

Experience with the development, study, and manufacturing of cooled blades for the GTé-65 high temperature gas turbine is described.