Martyniak R. M. and Slobodian B. S. The influence of liquid bridges in intersurface gab on contact of compliant bodies
Interaction of elastic halfspaces has been modeled for the case when in the intercontact gap caused by a groove on the surface of one of the bodies, uncompressible liquid bridges at the edges of the gap and gas pressure action in its middle part are present. The soluion of the problem is given in terms of the gap height function, and for its determination a sinular integral equation (SIE) solved analytically is obtained. Due to limitation of the SIE soluion and liquid amount constancy a system of transcendent equations is derived for determination of the gap and the bridges lengths. The dependence of the gap length, length of the regions with gas and liquid, height of meniscus on loading in case of relatively soft materials of contact pair are illustrated. It is established that contact pair behavior is characterized by ambiguity, that is, another equilibrium position with less height of the gap exists alongside with the existence of the equilibrium position of rigid materials.

7 
Irza Ye. M. The mathematical model of residual stresses formation in glass rotating bodies during cooling
The mathematical model of residual stress development in the regions of high temperature heating during cooling for circular glass shells is presented and algorithms for their determination are proposed. A possibility of optimization of cooling parameters is analyzed.

14 
Andreikiv O. Ye. and Sas N. B. Subcritical plane crack growth in the 3Dbody at hightemperature creep
On the basis of the mathematic model developed by authors the equations for investigation of the kinetics and determination of subcritical growth period of a plane crack at hightemperature creep have been obtained. The method of equivalent areas for the approximate solution of such problems has been proposed.

19 
Stankevych V. Z. Stress intensity at the crack in the composition of a semispace and a layer under harmonic loading
The 3D problem of elastic bimaterial body “halfspace–layer” with a pennyshaped crack is considered. The crack faces are subjected to timestationary torsional loading. The problem is reduced to solution of 2D boundary integral equations of Helmholtz potential type with the unknown jumps of displacements across the crack opposite faces. The dynamic stress concentration in the neighborhood of the crack contour is analyzed.

27 
Nykolyshyn M. M. and Zhydyk U. V. Thermoelastic oscillations of heterogeneous anisotropic cylindrical shells
For heterogeneous anisotropic circular cylindrical shells a coupled system of the differential equations of thermoelasticity in which anisotropy of physicomechanical properties in a transverse direction is taken in to account, is obtained. These equations are used for construction of the solution of a dynamic problem of thermoelasticity of heterogeneous axisymmetrical shells of finite length, and also for the analysis of natural thermoelastic vibrations of these shells. Crossply and angleply laminated shells are considered. Numerical results of natural frequencies and decrement of attenuation for graphiteepoxy composites are given.

33 
Yasnii P. V., Marushchak P. O., Hladio V. B., and Baran D. Ya. Interaction of interislocation parameters and hardness of plastically deformed heatresistant steels
The main regularities of the hightemperature plastic deformation effect on the heatresistant 15Õ13ÌÔ and 25Õ1Ì1Ô steels strengthening kinetics have been investigated using transmission electron microscopy and the methods of nondestructive testing. The differences in the intensity of plasticity exhausting of the investigated steels are found: ferritemartensitic 15Õ13ÌÔ steel is strengthened more when nonparallelism of the subboundaries of the dislocation microtrucure increases and the distance between them decreases and also due to grinding and fragentation of dislocation martensite. Ferritepearlitic steel 25Õ1Ì1Ô is characterized by less intenive strengthening which is caused by greater plasticity of the matrix and less original density of dislocations. It is shown that under heatresistant steels plastic deformation, irrespective of the deformation level, the relation of the substructures strengthening and the dislocations density in the lowangle borders and the hardness (microhardness) of the material can be described by the linear dependence.

41 
Opanasovych V. K., Stashchuk M. H., and Dorosh M. I. Bending of a plate with a periodic system of collinear cracks with account of their edges contact
Bending of the plate with a system of periodic collinear cracks with account of these cracks edges contact has been investigated. The stressstrain state of such a plate has been evaluated by the theory of complex variable function. It has been established that when the crack edges contact occurs along a part of plate thickness the stress intensify factors decrease and the intensity factors of moments increase to compare with the contact of crack edges along the line crossing the surface.

46 
Silickas P. and Valiulis A. V. Liquid phase deposition and properties of thin zirconium dioxide films on different substrates

53 
Ved’ M. V., Sakhnenko M. D., Shtefan V. V., Laion S. B., Oleinyk S. V., and Bilyi L. M. Computer modelling by neutron networks of chromatefree treatment of aluminium alloys
The thermodynamic characteristics and peculiarities of oxometalate reduction on aluminum surface as well as reaction product properties (specific electric resistance of oxides) were analyzed. The artificial intellect means were decided to be used for simulation of conversion coatings forming process because of the lack of correlation in ranged series of above mentioned parameters. The influence of an oxometalate concentration, pH, sealing period and test duration on the corrosion resistance of anodized D16 alloy was studied and visualized in 3D space. Artificial neuron networks based on multilayer perceptrons have been applied for prediction of the conversion coatings corrosion resistance.

57 
Jankura D., Bacova V., and Draganovska D. Study of the structure and adhesive properties of ceramic coatings prepared by plasma spraying

62 
Shanaghi A., Sabour Rouhaghdam A., Shahrabi T., and Aliofkhazraei M. Study of TiO2 nanoparticle coating by solgel method for corrosion protection

71 
Bonishko O. S., Vrublevska T. Ya., Zvir O. Z., and Dobrianska O. P. Spectrophotoetric determination of osmium ions (IV) in intermetallides
A simple spectrophotometric method for determination of Os(IV) has been developed. The proposed method is based on the reaction of formation of this metal complex with Kongo Red (KR). The compositions of the Os(IV) with KR, ?max has been established under the optimal conditions (u.o.c.). Interaction of Os(IV) with KR passes with formation of a compex with a structure M:R = 1:1 at pH 3.5. The formed complex is characterized by the maium light absorbtion at ?max = 340 nm. The method allows to determine from 0.09 to 6.70 mg/l of osmium. The influence of foreign ions on the spectrophotometer deterination of Os(IV) has been studied. The method was verified during the analysis of the syntheic solutions.

82 
Nykyforchyn H. M., Ostash O. P., Tsyrulnyk O. T., Andreiko I. M., and Holovatiuk Yu. V. IElectrochemical assessment of service degradation of aviation aluminium alloy
It is shown that the change of the mechanical properties of aluminum alloy because of its inservice or inlaboratory aging is accompanied by the essential change of its electrochemical properties and it can be used for monitoring of inservice material degradation.

87 
Voytko M. V., Nazarchuk Z. T., and Kuryliak D. B. Interaction of a plane SHwave with interface crack tips
Based on the previously obtained solution of the problem of SHplane wave diffraction on the interfacial crack, the peculiarities of the far radiated field for very small and critical angles of sounding are investigated. The effects of multiple wave diffraction on the crack tips as well as the formation of the scattered displacement field are analyzed. It is shown that in these cases the dependence of the field magnitude on the crack length at very small and critical angles is monotonic. This effect can be used for determination of the crack size.

92 
Teterko A. Ya. and Hutnyk V. I. Dependence of eddy current magnetic field on the parameters of subsurface crack in aluminium alloys
The spatial characteristics of eddy current magnetic field caused by the change of parameters of the undersurface crack and also of local change of the material conduciity has been calculated using the direct problems solutions. Some specific features in the menioned defect field were determined for solution of the problems of defectometry.

99 
Uchanin V. M. and Zhenirovskii M. I. The influence of crack surface relief on eddy current transducer signal
The influence of fractal character of natural crack surface on the eddy current transducer signal is discussed. The proposed model can explain the difference of the eddy current signal response of natural crack and artificial flaw with the same dimensions.

104 
Lagoda T. and Walat K. Identification of the cyclic strain curve based on random test results

107 
Uscinovich R. Creep of lamellar aluminiumzinc alloy
Results of experimental investigations of mechanical and rheological properies of the bilayer metal composite Al–Zn received due to cold gluing of aluminum and zinc sheets are presented. The rule of mixtures for isostrain model is applied to analyse mechanical properties of a composite. Taking the deformation characteristics of components into account, the empirical formula for calculation of the constant strain rate creep of the composite depening on the tensile stress is proposed.

110 
Anuar K., Zainal Z., Saravanan N., and Asikin N. Preparation of zinc sulfide thin films in the presence of sodium tartrate as a complexing agent

115 
Mazanko V. F., Khranovska K. M., Ivashchenko Ye. V., and Vorona S. P. The influence of gas environment on formation of coating on iron during electricspark alloying

117 
Mannapova O. V., Sokolov O. D., Olik A. P., Kostrzhytskyi A. I., and Tverdokhlib V. I. Wear resistance of laserirradiated surfaces of piston rings

120 
Kuntyi O. I., Okhremchuk Ye. V., and Yavorskyi V. T. Morphology of cathode telure precipitated in the environment of organic aproton solvents

123 
Stadnyk M. M. Deformation criteria of limiting state of a cracked plate under biaxial loading

126 
Oleh Mykolayovych Romaniv (To the 80th birthday)

129 
Yarema S. Ya. Language recommendations

126 
Instructions to contributors

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