Výsledky vyhledávání - "O. E. Andreikiv"

Evaluation of the Durability of the Fiber-Reinforced Concrete Beam Under Long-Term Pure Bending and Local Creep

Autor: O. E. Andreikiv, I. Ya. Dolins’ka, O. K. Raiter

Publikováno v: Strength of Materials. 53:227-233

Based on the energy approach formulated earlier by the authors, the calculation model for determining the durability of a fiber-reinforced concrete beam under long-term pure bending and local creep was developed. The model relied on the first law of

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::1cd510ddb18f975ec2b3b43067ce54c5
https://doi.org/10.1007/s11223-021-00279-x

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Determination of the Residual Life of the Spraying Boom of a Field Sprinkler in the Maneuvering Loading Mode

Autor: I. Ya. Dolins’ka, Yu. Ya. Matviiv, O. E. Andreikiv, A. V. Babii

Publikováno v: Materials Science. 56:112-118

We propose a computational model for the evaluation of the residual service life of spraying booms of the field sprinklers in the maneuvering loading mode (stationary oscillations of sections of the boom together and separate shocks caused by the irr

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::93acbcb99a67a2e5aec4964d8efc744e
https://doi.org/10.1007/s11003-020-00404-2

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Computational Models of Fatigue Cracks Growth in Metallic Materials Under the Action of Force and Physicochemical Factors

Autor: N. S. Shtayura, O. E. Andreikiv

Publikováno v: Materials Science. 54:465-476

On the basis of energy approach, we propose computational models for the evaluation of the period of subcritical growth of small fatigue cracks in elastoplastic bodies under the action of force and physicochemical factors. The obtained results were c

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::04f37a889ae1282196c01cad764987be
https://doi.org/10.1007/s11003-019-00206-1

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Assessment of subcritical crack growth in hydrogen-containing environment by the parameters of acoustic emission signals

Autor: V. R. Skal’s’kyi, Iryna Dolinska, O. E. Andreikiv

Publikováno v: International Journal of Hydrogen Energy. 43:5217-5224

Estimation models (differential equations, initial and final conditions) for determining the crack propagation kinetics in hydrogen-containing environments using the acoustic emission (AE) signal parameters are proposed. The formulation of these mode

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b3b71684fb57c2bfc50fd2d3dfc07530
https://doi.org/10.1016/j.ijhydene.2018.01.124

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Determination of the Residual Life of Two-Layer Plates with Systems of Cracks Under Long-Term Static Loading at High Temperatures

Autor: A. R. Lysyk, I. Ya. Dolins’ka, O. E. Andreikiv

Publikováno v: Materials Science. 52:460-471

We develop computational models aimed at the determination of the residual service life of two-layer plates with systems of cracks under long-term static loads at high temperatures. The models are based on the first law of thermodynamics of energy ba

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::00b32b8b1b59b14cffd3a84c38373c82
https://doi.org/10.1007/s11003-017-9978-9

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Influence of Hydrogen on the Residual Service Life of a Gas Pipeline in the Maneuvering Mode of Operation

Autor: I. Ya. Dolins’ka, I. P. Shtoiko, V. Z. Kukhar, O. E. Andreikiv

Publikováno v: Materials Science. 51:500-508

We propose a computational model aimed at finding the service life of a gas pipeline containing a surface corrosion crack under the action of long-term pressure discontinuous as a function of time (maneuvering mode of operation) and in the presence o

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::89a71450a0108c0d4360e9aa04358339
https://doi.org/10.1007/s11003-016-9868-6

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Mathematical Models for Estimating the Residual Life of Plates with Systems of Cracks Under the Action of Long-Term Static Loads, High Temperatures, and Hydrogen

Autor: N. V. Yavors’ka, V. Z. Kukhar, O. E. Andreikiv

Publikováno v: Journal of Mathematical Sciences. 212:121-130

We formulate computational models used to determine the durability of plates with systems of cracks under the action of long-term static loads, high temperatures, and hydrogen-containing environments. These models are based on the first law of thermo

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c92c45ec2af1e6e8f99e30cebfb562c0
https://doi.org/10.1007/s10958-015-2653-5

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Fatigue Crack Propagation Kinetics in Bimetallic Plates

Autor: O. E. Andreikiv, V. R. Skal’s’kii, Ya. Dolins’ka, O. S. Dubyts’kyi, V. K. Opanasovich

Publikováno v: Strength of Materials. 47:662-669

A procedure is proposed for assessing the residual life of bimetallic plates with internal and surface cracks under cyclic tension. The procedure is based on the energy approach previously developed by the authors and the basic statements of the mech

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::6073d95225f86a79a0b0fcaa3a1ad0b2
https://doi.org/10.1007/s11223-015-9702-7

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Computational Model of Crack Propagation in Bimetallic Materials for High Concentrations of Hydrogen and High Temperatures

Autor: N. V. Yavors’ka, O. E. Andreikiv, L. N. Dobrovol’s’ka

Publikováno v: Materials Science. 51:76-87

We proposed a computational model for the determination of the kinetics of propagation of hydrogen cracks in a body caused by high pressures in these cracks formed due to ultrahigh hydrogen concentrations in the body. The model is based on the deform

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::701fbae9707047575cb51fed00d3fdf6
https://doi.org/10.1007/s11003-015-9812-1

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