ON THE METHOD OF EXPERIMENTAL EVALUATION OF MODEL PARAMETERS FOR PREDICTING THE CHARACTERISTICS OF PIPE MATERIAL CRACK RESISTANCE, TAKING INTO ACCOUNT THE INFLUENCE OF CORROSION-EROSION PROCESSES

VESELUKHA Vadim M., Ph. D. in Eng., Lecturer of Special Disciplines, Lida College of the State University of Grodno named after Yanka Kupala, Lida, Republic of Belarus, This email address is being protected from spambots. You need JavaScript enabled to view it.">This email address is being protected from spambots. You need JavaScript enabled to view it.

BOGDANOVICH Alexander V., D. Sc. in Eng., Assoc. Prof., Professor of the Department of Theoretical and Applied Mechanics, Belarusian State University, Minsk, Republic of Belarus, This email address is being protected from spambots. You need JavaScript enabled to view it.">This email address is being protected from spambots. You need JavaScript enabled to view it.

crack resistance, survivability, pipeline, stress intensity factor, tightening, corrosion-erosion processes

1. Opredelenie kharakteristik treshchinostoykosti (vyazkosti razrusheniya) pri staticheskom nagruzhenii [Determination of crack resistance characteristics (fracture toughness) under static loading]. Metodicheskie rekomendatsii MR 1-95. Mekhanika katastrof. Opredelenie kharakteristik treshchinostoykosti konstruktsionnykh materialov [Methodical recommendations MR 1-95. Mechanics of disasters. Determination of crack resistance characteristics of structural materials], 1995, pp. 7–82.
2. State Standard 25.506-85. Opredelenie kharakteristik treshchinostoykosti (vyazkosti razrusheniya) pri staticheskom nagruzhenii [Determination of crack resistance characteristics (fracture toughness) under static loading]. Moscow, Standartov Publ., 1985. 42 p.
3. Standard of Belarus 2502-2017. Truby nefteprovodnye. Metody ispytaniya trubnoy stali na treshchinostoykost (Standart Belarusi) [Oil pipeline pipes. Methods of testing pipe steel for crack resistance (Standard of Belarus)]. Minsk, Gosstandart Publ., 2017. 29 p.
4. Panasyuk V.V., Ratych L.V., Dmytrakh I.N. O nekotorykh metodicheskikh osobennostyakh issledovaniya tsiklicheskoy treshchinostoykosti konstruktsionnykh materialov v zhidkikh sredakh [Some methodological features of the study of cyclic crack resistance of structural materials in liquid media]. Materialy VI Mezhdunarodnogo kollokviuma “Mekhanicheskaya ustalost metallov” [Proc. 6 International colloquium “Mechanical fatigue of metals”]. Kiev, 1983, pp. 284–292.
5. Sosnovskiy L.A., Makhutov N.A. Korrozionno-mekhanicheskaya ustalost: pryamoy i obratnyy effekty (obobshchayushchaya statya) [Corrosion-mechanical fatigue: direct and reverse effects (summary article)]. Zavodskaya laboratoriya [Industrial Laboratory], 1993, vol. 59, no. 7, pp. 33–44.
6. Corrosion Fatigue: Chemistry, Mechanics and Microstructure. Houston, National Association of Corrosion Engineers, 1972. 762 p.
7. Vosikovski R. Rost ustalostnoy treshchiny v truboprovodnoy stali Kh-65 pri ispytaniyakh s nizkoy chastotoy tsiklov v solenoy i presnoy vode [Fatigue crack growth in pipeline steel X-65 during tests with low cycle frequency in salt and fresh water]. Teoreticheskie osnovy inzhenernykh raschetov [Theoretical foundations of engineering calculations], 1975, no. 4, pp. 12–20.
8. Tokano T., Okamura H. Fatigue crack propagation in aqueous environments. Proc. International Conference on Fracture Mechanics and Technology. Hong Kong, 1977, vol. 1, pp. 669–712.
9. Veselukha V.M., Bogdanovich A.V. Metodika otsenki ostatochnogo resursa trub lineynoy chasti nefteprovoda s tipichnymi defektami po kriteriyu treshchinostoykosti v usloviyakh tsiklicheskogo nagruzheniya [Method of assessment of the residual life of pipes of the linear part of the pipeline with the typical defects according to the crack resistance criteria under cyclic loading]. Mekhanika mashin, mekhanizmov i materialov [Mechanics of machines, mechanisms and materials], 2017, no. 2(39), pp. 5–11.
10. Sosnovskiy L.A. Statisticheskaya mekhanika ustalostnogo razrusheniya [Statistical mechanics of fatigue failure]. Minsk, Nauka i tekhnika Publ., 1987. 288 p.
11. Sosnovskiy L.A., Kozik A.N. Metodika raschetno-eksperimentalnoy otsenki korrozionno-mekhanicheskoy prochnosti tribofaticheskikh sistem [Method for calculating and experimental evaluation of the corrosion-mechanical strength of tribofatigue systems]. Mekhanika mashin, mekhanizmov i materialov [Mechanics of machines, mechanisms and materials], 2011, no. 3(16), pp. 49–53.
12. Sosnovskiy L.A., Kostyuchenko A.A., Vorobev V.V. Inzhenernaya model korrozionno-mekhanicheskoy prochnosti [Engineering model of corrosion-mechanical strength]. Vestsi Natsiyanalnay akademii navuk Belarusi. Seryya fizika-tekhnichnykh navuk [Proceedings of the National Academy of Sciences of Belarus. Physical-Technical Series], 2008, no. 2, pp. 66–70.
13. Sherbakov S.S., Sosnovskiy L.A Mekhanika tribofaticheskikh sistem [Mechanics of tribo-fatigue systems]. Minsk, Belorisskiy gosudarstvennyy universitet Publ., 2011. 407 p.

IMPLANT FOR FIXING TROCHANTERIC FRACTURES OF THE FEMUR

KORZUN Aleh A., Ph. D. in Med., Leading Researcher, Republican Scientific and Practical Center of Traumatology and Orthopedics, Minsk, Republic of Belarus, This email address is being protected from spambots. You need JavaScript enabled to view it.">This email address is being protected from spambots. You need JavaScript enabled to view it.

KUKAREKO Vladimir A., D. Sc. in Phys. and Math., Prof., Chief of the Center of Structural Research and Tribomechanical Testing of Materials and Mechanical Engineering Products, Joint Institute of Mechanical Engineering of the NAS of Belarus, Minsk, Republic of Belarus, This email address is being protected from spambots. You need JavaScript enabled to view it.">This email address is being protected from spambots. You need JavaScript enabled to view it.

SHMIALIOU Аliaksei V., Ph. D. in Eng., Deputy Director General for Research, Joint Institute of Mechanical Engineering of the NAS of Belarus, Minsk, Republic of Belarus, This email address is being protected from spambots. You need JavaScript enabled to view it.">This email address is being protected from spambots. You need JavaScript enabled to view it.

SITNIK Alexandre А., Ph. D. in Med., Head of the Laboratory, Republican Scientific and Practical Center of Traumatology and Orthopedics, Minsk, Republic of Belarus, This email address is being protected from spambots. You need JavaScript enabled to view it.">This email address is being protected from spambots. You need JavaScript enabled to view it.

BONDAREV Oleg N., Ph. D. in Med., Researcher, Republican Scientific and Practical Center of Traumatology and Orthopedics, Minsk, Republic of Belarus, This email address is being protected from spambots. You need JavaScript enabled to view it.">This email address is being protected from spambots. You need JavaScript enabled to view it.

LINOV Alexandre L., Ph. D. in Med., Assoc. Prof., Deputy Director, Republican Scientific and Practical Center of Traumatology and Orthopedics, Minsk, Republic of Belarus, This email address is being protected from spambots. You need JavaScript enabled to view it.">This email address is being protected from spambots. You need JavaScript enabled to view it.

proximal femur, fracture, three-dimensional models of femur and fixator, experimental samples of titanium fixators, static bending, cyclic durability

1. Matityahu A., Schmidt A.H., Grantz A., Clawson B., Marmor M., McClellan R.T. The Variable Angle Hip Fracture Nail Relative to the Gamma 3: A Finite Element Analysis Illustrating the Same Stiffness and Fatigue Characteristics. Advances in orthopedics, 2013.
2. Steinberg E.L., Blumberg N., Dekel S. The fixion proximal femur nailing system: biomechanical properties of the nail and a cadaveric study. Journal of biomechanics, 2004, no. 38(1), pp. 63–68.
3. Epple M. Biomaterialien und biomineralisation. Vieweg+Teubner Verlag, 2003. 176 p.
4. Sitnik A.A., Kukareko V.A., Kovenya A.S., Chernyshev D.A. Razrabotka i konechno-elementnoe modelirovanie fiksatora bolshebertsovoy kosti na osnove dannykh kompyuternoy tomografii [Development and finite element modeling of the tibial fixator based on computed tomography data]. Materialy dokladov 5 Belorusskogo kongressa po teoreticheskoy i prikladnoy mekhanike “Mekhanika–2011” [Proc. 5th Belarusian Congress of Theoretical and Applied Mechanics “Mechanics – 2011”]. Minsk, 2011, pp. 423–428.
5. Kukareko V.A., Sitnik A.A., Shmialiou A.V. Razrabotka konstruktsii i opredelenie mekhanicheskikh kharakteristik implantatov dlya fiksatsii perelomov distalnogo otdela bolshebertsovoy kosti cheloveka [Design development and determination of mechanical characteristics of implants for fixation of distal tibia fractures in the human]. Sovremennye metody i tekhnologii sozdaniya i obrabotki materialov. Materialovedenie [Modern methods and technologies for creating and processing materials. Materials science], 2018, vol. 1, pp. 108–119.
6. Ritacco L.E., Milano F.E., Chao E. Computer-Assisted Musculoskeletal Surgery: Thinking and Executing in 3D. Cham, Springer International Publishing, 2016. 326 p.
7. Helwig P., Faust G., Hindenlang U., Hirschmüller A., Konstantinidis L., Bahrs C., Südkamp N., Schneider R. Finite element analysis of four different implants inserted in different positions to stabilize an idealized trochanteric femoral fracture. Injury, 2009, no. 40(3), pp. 288–295.
8. Arzamasov T.V. Spravochnik po konstruktsionnym materialam [Reference guide for construction materials]. Moscow, Moskovskiy gosudarstvennyy tekhnicheskiy universitet im. N.E. Baumana Publ., 2005. 649 p.
9. State Standard 23207-78. Soprotivlenie ustalosti. Osnovnye terminy, opredeleniya i oboznacheniya [Fatigue resistance. Basic terms, definitions and designations]. Moscow, Standartov Publ., 1981. 33 p.
10. Rüedi T.P., Buckley R.E., Morgan C.G. AO – Principles of Fracture Management. Davos, AO Publishing, 2007. 1112 p.
11. Beletskiy A.V., Sitnik A.A., Korzun A.A., Amelchenya A.S., Kukareko A.V. Fiksator intramedullyarnyy proksimalnogo otdela bedrennoy kosti s blokirovaniem [Intramedullary fixator of the proximal femur with blocking]. Patent RB., no. 11490U, 2017.

ASSESSMENT OF ULTIMATE LOAD ON HUMAN FEMUR WITH TELESCOPIC OR ISOELASTIC IMPLANT IN PROXIMAL PART

BOSIAKOV Sergei M., D. Sc. in Phys. and Math., Dean of the Faculty of Mechanics and Mathematics, Belarusian State University, Minsk, Republic of Belarus, This email address is being protected from spambots. You need JavaScript enabled to view it.">This email address is being protected from spambots. You need JavaScript enabled to view it.

NIKOLAITCHIK Mikhail A., Master's Degree Student of the Faculty of Mechanics and Mathematics, Belarusian State University, Minsk, Republic of Belarus, This email address is being protected from spambots. You need JavaScript enabled to view it.">This email address is being protected from spambots. You need JavaScript enabled to view it.

MATVEEV Anatoliy L., Ph. D. in Med., Traumatologist-orthopedist of the Department of Traumatology, Novokuybyshevsk Central City Hospital, Novokuybyshevsk, Russia, This email address is being protected from spambots. You need JavaScript enabled to view it.">This email address is being protected from spambots. You need JavaScript enabled to view it.

MINASOV Timur B., D. Sc. in Med., Head of the Department of Traumatology and Orthopedics, Bashkir State Medical University, Ufa, Russia, This email address is being protected from spambots. You need JavaScript enabled to view it.">This email address is being protected from spambots. You need JavaScript enabled to view it.

femur, intramedullary implant, telescopic implant, isoelastic implant, ultimate load, finite element modeling

1. Ossendorf C., Scheyerer M.J., Wanner G.A., Simmen H.P., Werner C.M. Treatment of femoral neck fractures in elderly patients over 60 years of age — which is ideal modality of primary joint replacement. Patient Safety in Surgery, 2010, vol. 4, pp. 16–27.
2. Lazarev I.A., Guk Yu.M., Oliynik Yu.V., Skiban M.V. Stress-deformed state of the proximal branch of the cell of fibrous dysplasia under conditions of osteosynthesis by different types of clamps. Trauma, 2015, vol. 16, pp. 49–56.
3. Bosiakov S., Matveev A., Nikolaitchik M. Assessment of the ultimate load on femur with reinforcing implant in then proximal part. Series of biomechanics, 2018, vol. 32, no. 4, pp. 5–10.
4. Matveev A.L., Nekhozhin A.V. Ustroystvo dlya armirovaniya sheyki bedrennoy kosti i preventivnoy profilaktiki perelomov [Device for strengthening the femoral neck and prevention of fractures]. Patent RF, no. 98901, 2010.
5. Matveev A.L., Nekhozhin A.V., Minasov T.B., Frolov A.V. Ustroystvo dlya armirovaniya sheyki bedrennoy kosti i preventivnoy profilaktiki perelomov ee pri osteoporoze [Device for strengthening the femoral neck and prevention of its fractures in osteoporosis]. Patent RF, no. 121725, 2012.
6. Matveev A.L., Nekhozhin A.V., Minasov T.B., Stepanov O.N., Dubrov V.E. Ustroystvo dlya profilakticheskogo armirovaniya i preduprezhdeniya perelomov proksimalnogo otdela bedra [Device for preventive reinforcement and prevention of fractures of the proximal femur]. Patent RF, no. 136703, 2014.
7. Bosiakov S., Yurkevich K., Silberschmidt V.V., Ershova A. Numerical and analytical model of long tubular bones with anisotropic distribution of elastic properties. Procedia Structural Integrity, 2018, vol. 13, pp. 636–641.
8. Rho J. An ultrasonic method for measuring the elastic properties of human tibial cortical and cancellous bone. Ultrasonics, 1996, vol. 34, pp. 777–783.
9. Marco M., Giner E., Larrainzar-Garijo R., Caeiro J.R., Miguélez M.H. Modelling of femur fracture using finite element procedures. Engineering Fracture Mechanics, 2018, vol. 196, pp. 157–167.
10. Keyak J. Improved prediction of proximal femoral fracture load using nonlinear finite element models. Medical Engineering and Physics, 2001, vol. 23, pp. 165–173.

METAL SCIENCE ASPECTS OF THE INFLUENCE OF DISPERSION NITRIDE HARDENING ON THE STRUCTURE OF HYPOEUTECTOID AND EUTECTOID CARBON STEELS

SHIPITSYN Sergey Ya., D. Sc. in Eng., Head of the Laboratory, Physico-Technological Institute of Metals and Alloys of the NAS of Ukraine, Kiev, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it.">This email address is being protected from spambots. You need JavaScript enabled to view it.

ZHORNIK Viktor I., D. Sc. in Eng., Assoc. Prof., Head of the Department of Technologies of Mechanical Engineering and Metallurgy — Head of the Laboratory of Nanostructured and Superhard Materials, Joint Institute of Mechanical Engineering of the NAS of Belarus, Minsk, Republic of Belarus, This email address is being protected from spambots. You need JavaScript enabled to view it.">This email address is being protected from spambots. You need JavaScript enabled to view it.

ISAEVA Lyudmila E., Ph. D. in Chem., Associate Professor of the Department of Theory of Metallurgical Processes and Chemistry, National Metallurgical Academy of Ukraine, Dnipro, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it.">This email address is being protected from spambots. You need JavaScript enabled to view it.

KUCHERENKO Pavel N., Junior Researcher, Physico-Technological Institute of Metals and Alloys of the NAS of Ukraine, Kiev, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it.">This email address is being protected from spambots. You need JavaScript enabled to view it.

LIHOVEY Dmitry I., Junior Researcher, Physico-Technological Institute of Metals and Alloys of the NAS of Ukraine, Kiev, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it.">This email address is being protected from spambots. You need JavaScript enabled to view it.

carbon steels, alloying, dispersion nitride hardening, ferrite-pearlite, bainite and martensite structures, austenitization, tempering, phase transformations, railway wheels and rails

1. Tylkin M.A. Spravochnik termista [Handbook of a heat-treater]. Moscow, Metallurgiya Publ., 1981. 648 p.
2. Getmanova M.E., Grinshpon A.S., Sukhov A.V., Filippov G.A., Yandimirov A.A. Vliyanie neodnorodnosti struktury i nemetallicheskikh vklyucheniy na vyazkost razrusheniya kolesnoy stali [Influence of structure heterogeneity and nonmetallic inclusions upon destruction toughness of wheel steel]. Stal [Steel], 2007, no. 9, pp. 96–99.
3. Ostash O.P., Andreiko I.M., Kulyk V.V., Uzlov I.H., Babachenko O.I. Vtomnadovgovichnist staley zaliznichnikh kolis [Fatigue life of railway wheel steels]. Fiziko-khimichna mekhanika materialiv [Physicochemical mechanics of materials], 2007, no. 3, pp. 93–102.
4. Babaskin Yu.Z., Shipitsyn S.Ya., Kirchu I.F. Konstruktsionnye i spetsialnye stali s nitridnoy fazoy [Structural and special steels with nitride phase]. Kiev, Naukovaya dumka Publ., 2005. 371 p.
5. Lev I.E., Pokidyshev V.V., Lazarev B.G. Analiz azotsoderzhashchikh soedineniy v splavakh zheleza [Analysis of nitrogen-containing compounds in iron alloys]. Moscow, Metallurgiya Publ., 1997. 120 p.
6. Stepin V.V., Kurbatova V.I., Fedorova N.D., Stashkova N.V. Opredelenie malykh kontsentratsiy komponentov v materialakh chernoy metallurgii. Spravochnik [Determination of small concentrations of components in ferrous metallurgy materials. Handbook]. Moscow, Metallurgiya Publ., 1987. 256 p.
7. Shipitsyn S.Ya., Stepanova T.V., Zolotar N.Ya., Lev I.E., Isaeva L.E. Pererozpodil azotu ta vanadiyu pri austenizatsii stali z nitridnim zmitsnennem dlya zaliznichnikh kolis [Redistribution of nitrogen and vanadium in austenizating nitride strengthened steel for rail wheels]. Metaloznavstvo ta obrobka metaliv [Metal science and treatment of metals], 2014, no. 2, pp. 8–13.
8. Goldshteyn M.I., Gerasev M.A. Rastvorenie karbidnykh i nitridnykh faz v stalyakh [Dissolution of carbide and nitride phases in steels]. 1979. 120 p.
9. Goldshteyn M.I., Farber V.M. Dispersionnoe uprochnenie stali [Dispersion hardening of steel]. Moscow, Metallurgiya Publ., 1979. 208 p.
10. Kurdyumov G.V., Utevskiy L.M., Entin R.I. Prevrashcheniya v zheleze i stali [Transformations in iron and steel]. Moscow, Nauka Publ., 1977. 238 p.
11. Blanter M.E. Teoriya termicheskoy obrabotki [Theory of heat treatment]. Moscow, Metallurgiya Publ., 1972. 328 p.
12. Babaskin Yu.Z., Shipitsyn S.Ya., Aftandilyants E.G. Ekonomnoe legirovanie stali [Lean alloying of steels]. Kiev, Naukovaya dumka Publ., 1987. 184 p.
13. Haundros E.D. Grain boundary segregation. The current situation and future requirements. Journal of Physics, 1975, vol. 36, no. 10, pp. 117–134.
14. Utevskiy L.M. Otpusknaya khrupkost [Tempering embrittlement]. Moscow, Metallurgizdat Publ., 1961. 191 p.
15. Coats D.I., Henry A. The effect of dispersed nitrides on the oxidation of ferritic alloys. Corrosion Science, 1982, vol. 22, no. 10, pp. 973–989.
16. Wada M., Fukase S., Nishikawa O. Role of carbides in the grain boundary segregation of phosphorus in 2,25 Cr – 1 Mo steel. Scripta Materialia, 1982, vol. 16, no. 12, pp. 1373–1378.
17. Bokshteyn S.Z., Bokshteyn B.S. Struktura i diffuziya [Structure and diffusion]. Metallovedenie i termicheskaya obrabotka stali [Metallurgy and heat treatment of steel], 1983, vol. 2, pp. 63–65.
18. Gubenko S.I. Diffuzionnoe vzaimodeystvie nemetallicheskikh vklyucheniy i stalnoy matritsy pri nagreve i goryachey deformatsii [Diffusion interaction of nonmetallic inclusions and steel matrix during heating and hot deformation]. Progressivnye metody termicheskogo uprochneniya v traktornom i selskokhozyaystvennom mashinostroenii [Advanced methods of thermal hardening in tractor and agricultural machinery], 1983, pp. 82–87.
19. Franzoni U., Sturlese S., Goretzki H. Effetti della segregazione sulla cavizione intergranulare da scorrimento e sul comportamento a rottura nell acciaio 21/4 Cr – 1 Mo. Bollettino tecnico Finsider, 1983, no. 398, pp. 165–168.
20. Ibragimov Sh.Sh., Ilin A.M., Zashkvara V.V. Izuchenie segregatsii primesey vnedreniya na poverkhnosti razrusheniya stali 12Kh18N10T metodom elektronnoy Ozhe-spektroskopii [Study of the segregation of impurity embedding on the fracture surface of steel 12Kh18N10T by Auger electron spectroscopy]. Poversknost: Fizika. Khimiya. Mekhanika [Surface: Physics. Chemistry. Mechanics], 1984, no. 1, pp. 66–68.
21. Ekobori T. Fizika i mekhanika razrusheniya i prochnosti tverdykh tel [Physics and mechanics of fracture and strength of solids]. Moscow, Metallurgiya Publ., 1971. 264 p.
22. Sean M.H. Intergranular segregation phenomena studied by AES. Journal de microscopie et de spectroscopie électroniques, 1983, vol. 8, no. 3, pp. 177–181.
23. Suruki S., Obata M., Abiko K., Kimura H. Effect of Carbon on the Grain Boundary Segregation of Phosphorus in iron. Scripta Materialia, 1983, vol. 17, no. 11, pp. 1325–1328.
24. Shipitsyn S.Ya., Ostash O.P., Kulik V.V., Kirchu I.F., Novitskiy V.G. Novaya stal dlya zheleznodorozhnykh koles s povyshennym resursom [New steel for railway wheels with increased service life]. Metall i lite Ukrainy [Metal and casting in Ukraine], 2018, no. 5–6, pp. 52–59.