STATISTICAL STUDY ON PROFILE DEVIATIONS OF CYLINDER GRINDING MACHINE RACEWAYS

The statistical analysis of the deviations of the outer and inner bearing race profiles of the cylinder grinding machines is resulted. The patterns of forming vibration spectra of the bearings of the same series and standard size, which designate the option of the practical recommendations on reducing noise levels of the bearing units, are deduced

CLASSIFICATION IN ENGINEERING AND ITS ASSESSMENT

A new fair comparative assessment method of the classification complexity for various object sets is proposed. The parameters defining the structure of various classifications are considered

Чинники, що визначають потребу поліграфічного підприємства у виробничому технологічному обладнанні

The article defines and substantiates the system of factors that shape the printing company’s need for production equipment.В статті визначено і обґрунтовано систему чинників, що формують потребу поліграфічного підприємства у виробничому обладнанні

Nonlinear spectral blueshift in semicondutor optical amplifiers

We demonstrate that spectral peak power of negatively chirped optical pulses can acquire a blueshift after amplification by a semiconductor optical amplifier. The central wavelength of a transform limited optical pulse translates over 20 nm towards a shorter wavelength after propagation in a single-mode fiber and semiconductor optical amplifier. A chirped Gaussian pulse with full width at half maximum 1 ps and dimensionless chirp parameter C = −20 can be blueshifted by 5 THz

WEARABILITY OF METAL-POLYMERIC TRIBOSYSTEMS UNDER LOW-FREQUENCY VIBRATIONAL LOADING

The experimental results of the wearability of metal-polymeric tribosystem with the composite coverage under dynamic loading are presented

SYSTEM COMPLEXITY INDEX

A new technique for the objective assessment of the engineering system complexity is offered. The complexity class concept is introduced

PROPERTIES OF POLYMERIC ANTIFRICTION COATINGS IN ACID AQUATIC MEDIA

The field research of the adhesion strength and creep flow of the polymeric composite coatings in the acid aquatic media is resulted