Sposob otsenki izgibnykh napryazhenii v elementakh konstruktsii. 2521753 Russian Federation, RU 2 521 753 C1, MPK G01N 27/82 (2006.1) applicant and patent holder is Irkutsk State Transport Un-ty.
Sposob operativnogo obnaruzheniya defektov i mekhanicheskikh napryazhenii v protyazhennykh konstruktsiyakh. Stepanov M.A., Stepanov A.P., Pykhalov A.A. 2455634 Russian Federation, RU 2 455 634 C1, MPK G01N 27/80 (2006.1) applicant and patent holder is Irkutsk State Transport Un-ty. Sposob otsenki zapasa prochnosti izdelii v protsesse ekspluatatsii. Stepanov A.P., Stepanov M.A., Milovanov A.I., Milovanova E.A., Salomatov V.N. 2452943 Russian Federation, RU 2 452 943 C1, MPK G01N 27/82 (2006.1) applicant and patent holder is Irkutsk State Transport Un-ty. Sposob obnaruzheniya izgibnykh napryazhenii. Stepanov A.P., Stepanov M.A., Milovanov A.I., Salomatov V.N. 2441227 Russian Federation, RU 2 441 227 C1, MPK G01N 27/72 (2006.1) applicant and patent holder is Irkutsk State Transport Un-ty. Sposob magnitnoi defektoskopii izdelii v napryazhennom sostoyanii. Stepanov A.P., Milovanov A.I., Stepanov M.A. 2387983 Russian Federation, RU 2 387 983 C1, MPK G01N 27/82 (2006.01) applicant and patent holder is Irkutsk State Transport Un-ty. Stepanov A.P., Stepanov M.A., Milovanov A.I., Salomatov V.N., Lopatin M.V. Filinov V.N., Ketkovich A.A., Filinov M.V. Klyuev V.V., Muzhitskii V.F., Gorkunov E.S., Shcherbinin V.E. Nerazrushayushchii kontrol': Spravochnik: V 8 t. Anisimov V.A., Katorgin B.I., Kutsenko A.N. Nerazrushayushchii kontrol' i diagnostika. Nerazrushayushchii kontrol' v promyshlennosti. Gorbash V.G., Delendik M.N., Pavlenko P.N. The use in practice of the considered methods of non-destructive magnetic control and the evaluation of the technical state of extended ferromagnetic profiles with symmetrical cross-sections, without taking them out of working condition, allows us to speed up the control process, making it intuitive and easy to implement.ġ. The calculations obtained in the work were verified using digital models and confirmed by full-scale experiments. We used methods of magnetic control of extended ferromagnetic objects, having in their cross-section a simple geometrical figure symmetrical about one or more axes of symmetry, as well as the mathematical tools of subject matters on the resistance of materials and theoretical electrical engineering. When analyzing the patterns of an external magnetic field on the surface of a controlled cross-section in the extended profile control section, it might be necessary to evaluate the internal stresses and defects in the section, as well as to figure out how the magnetic induction distribution is related to the indicated stresses and defects, and how the stresses are distributed in the sections in the control section. Also, the effect of the water foundation on the predicted beam momentum was analyzed by the Winkler foundation, the inclusion gave minor changes to the predicted stress.The article analyzes ways of the detection and distribution of bending stresses and defects in the material of symmetrical cross-sections of extended steel profiles using magnetic field patterns, previously created as symmetrical with respect to the geometric shapes of their cross-sections. These failure models predicted a pronounced temperature variation in tensile strength compared to the flexural strength which was observed to vary far less with temperature. For warm ice we assumed a linear elastic perfect-plastic material with constant E (z). From these experiments a non-linear stress distribution, σ (x, z), was derived for the cold brittle Svea ice, by linear elastic failure theory and a non-linear vertical elastic modulus profile, E (z). Small scale uni-axial compression tests suggested that the vertical profile of the elastic modulus, E (z), was similar to the temperature profile (at least when salinities were similar). The experimental work consisted of cantilever beam tests, small scale horizontal uni-axial compression tests as well as temperature and salinity measurements. The ice examined in Svea was cold and brittle, showing a clear temperature gradient, while the ice examined on Lance was nearly isothermal and ductile. For this work two scientific expeditions on sea ice were designed and executed respectively to the Svea bay and travelling by ship (RV Lance) in the Barents sea. Hoyland Aleksey Marchenko Marina Karulina Evgeny KaulinĪbstract: The objective of the work presented in this article was to investigate the vertical stress distribution of first year sea ice covers especially the tensile strength was compared to the flexural strength (beam capacity).
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