Department №10
Physical Fundamentals of Fracture and Strength of Materials in Aggressive Environments

Scientific credo: Development of methods for influence evaluation of aggressive environments, especially hydrogen-contained, on fracture resistance and strength structural metals and alloys
Main research directions:

  • Conducting of experimental studies for establishing of fundamental dependencies between parameters of physico-chemical processes of aggressive environments/deformed metals interactions and parameters of physico-mechanical processes of material fracture.
  • Mathematical modelling of metals fracture in hydrogen-contained and corrosive environments with aim to develop theoretical basis for calculation of their strength.
  • Determination of basic characteristics of crack growth resistance of structural materials and alloys in aggressive environments and criteria development for assessment of their strength and serviceability in operating environments according to needs of hydrogen/heat/nuclear energy, mechanical engineering and pipeline transport.
  • Development of computers expert system for diagnostics of critical structures of long-term operation base on conceptions and criteria of physico-chemical mechanics of fracture and strength of materials.

Laboratory of hydrogen resistance of structural alloys (Head – O. Balitskii) conducts research on hydrogen degradation of structural materials for existed and advanced power units; carries out experimental and analytical assessment of durability of materials for power equipment in hydrogen, determining of their resistance to fracture and standard mechanical characterization of materials in hydrogen under elevated temperatures and pressures.


Department staff:

Head of Dep.
Doctor of Sciences (Eng)
Corr. Member of NASU
Leading Researcher
Doctor of Phys.-Math. Sciences Professor
Senior Researcher
Doctor of Sciences (Eng)
Rostyslav LESHCHAK
Junior Researcher
Roman Vovk
Leading Engineer
Engineer I category 

Laboratory № 10-1 

Head of Lab.
Doctor of Sciences (Eng)
Senior Researcher
Doctoral student, PhD
Junior Researcher

Department’s productions and equipments:

Laboratory complex based on the dynamic electrochemical laboratory VoltaLab40 VoltaLab40 (Radiometer Analytical SAS, France) for study
of hydrogen charging specificity and determination of bulk hydrogen concentration in structural steels and alloys
Testing equipment for study of hydrogenating media effects on resistance to fracture and strength of structural metals and alloys

Testing equipment for determination of fatigue crack growth resistance of structural metals and alloys in aqueous environments under elevated temperatures up to 2500C

Specialised laboratory for testing of structural alloys under static and cyclic loading in gaseous media with high temperature (293 ... 1000 К) and pressure (0.1 … 98 MPa)

Specialised laboratory for expert assessment of risk of fracture and strength of structural components of pipeline systems for transmission of gaseous hydrogen and its mixture with other gases

Main publications:

  1. Dmytrakh I. M., Toth L., O.L. Bilyy, A.M. Syrotyuk, (2012) Workability of materials and structural elements with sharp-edge stress concentrators. Reference manual / Editor V.V. Panasyuk – Lviv: Publishing House “Spolom” - 316 p. (in Ukrainian).
  2. Balitskii A.I., Makhnenko O.V., Balitskii O.A. et al (2005) Strength of materials and durability of structural elements of nuclear power plants. Reference manual / Editor A. I. Balitskii – Kiev: Publishing House of NASU “Academperiodyka” - 544 p. (in Ukrainian).
  3. Dmytrakh I. M., Vainman A. B., Stashchuk M. H. and Toth L. (2005) Reliability and durability of structural elements for heat-and-power engineering equipment. Reference manual / Editor I. M. Dmytrakh – Kiev: Publishing House of NASU “Academperiodyka” - 378 p. (in Ukrainian).
Articles in international  professional journals rating:
  1. Dmytrakh I. Effect of hydrogen concentration on fatigue crack growth behaviour in pipeline steel / I.M. Dmytrakh, R.L. Leshchak, A.M. Syrotyuk, R.A. Barna // International Journal of Hydrogen Energy. – 2017. – V. 42, Is. 9. – P. 6401–6408.
  2. Stashchuk M.H. Analytical evaluation of hydrogen induced stress in metal / M.H. Stashchuk, M.I. Dorosh // International Journal of Hydrogen Energy. – 2017. – V. 42, Is. 9. – P. 6394–6400.
  3. Dmytrakh I. Effect of hydrogen concentration on strain behaviour of pipeline steel / I.M. Dmytrakh, R.L. Leshchak, A.M. Syrotyuk // International Journal of Hydrogen Energy. – 2015. – V. 40, Is. 10. – P. 4011–4018.
  4. Dmytrakh I.M. Relationship between fatigue crack growth behaviour and local hydrogen concentration near crack tip in pipeline steel / I.M. Dmytrakh, O.D. Smiyan, A.M. Syrotyuk, O.L. Bilyy // International Journal of Fatigue. – 2013. – V. 50. – P. 26–32.
  5. Stashchuk M.H. Evaluation of hydrogen stresses in metal and redistribution of hydrogen around crack-like defects / M.H. Stashchuk, M.I. Dorosh // International Journal of Hydrogen Energy. – 2012. – V. 37. – P. 14687–14696.
  6. Balitskii A. The high- and low-cycle fatigue behaviour of Ni-contain steels and Ni-alloys in high pressure hydrogen / A. Balitskii, V. Vytvytskyii, L. Ivaskevich, J. Eliasz / International Journal of Fatigue. – 2012. – V. 39. – P. 32–37.
  7. Capelle J. The effect of hydrogen concentration on fracture of pipeline steels in presence of a notch / J. Capelle, J. Gilgert, I. Dmytrakh, G. Pluvinage // Engineering Fracture Mechanics. – 2011. – V. 78, Is. 2. – P. 364–373.
  8. Dmytrakh I.M. Corrosion Fracture of Structural Metallic Materials: Effect of Electrochemical Conditions in Crack / I.M. Dmytrakh // Strain. – 2011. – V. 47, Is. s2 (Issue Supplement). – P. 427–435.
  9. Сapelle J. Comparative assessment of electrochemical hydrogen absorption by pipeline steels with different strength / J. Capelle, I. Dmytrakh, G. Pluvinage // Corrosion Science. – 2010. – V. 52, Is. 5. – P. 1554–1559.
  10. Capelle J. Sensitivity of pipelines with steel API X52 to hydrogen embrittlement / J. Capelle, J. Gilgert, I. Dmytrakh, G. Pluvinage // International Journal of Hydrogen Energy. – 2008. – V. 33, Is. 24. – P. 7630–7641.
  11. Dmytrakh I.M. Corrosion fatigue cracking and failure risk assessment of pipelines / I.M. Dmytrakh // Safety, Reliability and Risks Associated with Water, Oil and Gas Pipelines: NATO Science for Pease and Security Series C: Environmental Security. – The Netherlands: Springer, 2008. – P. 99–113.
  12. Akid R. Fatigue Damage Accumulation: the role of corrosion on the early stages of crack growth / R. Akid, I.М. Dmytrakh, J. Gonzalez-Sanchez // Corrosion Engineering, Science and Technology. – 2006. – V. 41, № 4. – P. 328–335.


  1. Patent of Ukraine No 57275. Test desk for assessment of strength and fracture of pipes under internal pressure of gaseous environments. / O.L. Lutytskyy, I. M. Dmytrakh, R.I. Vovk, O.Z. Student, O.L. Bilyy. – Publ. 25.02.11.
  2. Patent of Ukraine No 50656. Method of hydrogen degradation determination of steels hydrogen gaseous environment / A.І. Balitskii, V.I. Vytvytskyi, L.M. Ivaskevich, M.P. Berezhnycka, S.O. Hrebenjuk, V.M. Moczulskii. – Publ. 25.06.10, Bul. No 12.
  3. Patent of Ukraine No 58195. Method of treatment of non magnetic steels for producing of retaining rings of turbogenerators rotors with hydrogen cooling / A.I. Balitskii, L.I.  Venglowski, V.I.  Kovalenko, I.F. Kostyuk. – Publ. 11.04.11, Bul. No 7.
  4. Patent of Ukraine No 19453. Method of rigidity increasing of polymer pipes and structures with cellular wall / M.H. Stashchuk, М.І. Dorosh, L.M. Ivanytska. – Publ. 10.06.13, Bul. No 11.
  5. Patent of Ukraine No 89417. Concentrate of modified sunflower oil as an emulsifier of lubricating-cooling liquids / A.I.  Balitskii, M.R. Havrylyuk, R.M.  Deviatkin, I.R .Fedusiv. – Publ. 25.04.14, Bul. No 8.
Acts of implementation:
  1. Methodical recommendations of technical state evaluation of turbogenerator rotor retaining rings (normative document SNOU-N TT45.301:2006) / Loshak O.S., Balitskii A.I., Pulkas L.G., Lizunov S.O., Ripey I.V., Gurina O.V. // Ministry of fuel and energetic of Ukraine.- Decision of Minister No 432, 9.11.2006.- Kyiv: GRIFRE.-2007.- 32 P.
  2. Methodical recommendations of technical state diagnostic and evaluation of life time of steam turbine cast vessel details (normative document)/ Loshak O.S., Balitskii A.I., Pulkas L.G., Lizunov S.O., Ripey I.V., Gurina O.V. // Ministry of fuel and energetic of Ukraine.- Decision of Minister No 124, 1.03.2007.- Kyiv: GRIFRE.-2007.- 39 P.

Ukrainian partners:
  1. Ye.O.  Paton Electric Welding Institute of NASU, 03680, 11 Bozhenka Str., Kyiv.
  2. H.S. Pisarenko Institute for Problems of Strength of NASU, 01014, 2 Timiryazevskaya Str., Kyiv.
  3. Lviv Polytechnic National University, 79008, 12 S. Bandera Str., Lviv.
  4. Ivano-Frankivsk National Technical University of Oil and Gas, 76019, 15 Karpatska Str., Ivano-Frankivsk.
  5. „Galremenergo” PSC „DTEK ZAHIDENERGO”, 79028, 7 Kozelnytska Str., Lviv.
  6. State Enterprise "Lviv Design Bureau" Ministry of Energy and Coal Industry of Ukraine, 79060, 5 Naukova Str., Lviv.
  7. Energoresurs-Invest Corporation, 79035, Zelena Str., Lviv.

International partners:
  1. Prof. Guy PLUVINAGE, Prof. Zitouni AZARI, Dr. Julien CAPELLE, Laboratoire Mécanique Biomécanique Polymére Structures (LaBPS), École Nationale d'Ingénieurs de Metz (ENIM), 1 route d'Ars Laquenexy, CS 65820, 57078 Metz, FRANCE.
  2. Prof. Robert AKID, School of Materials, University of Manchester, Oxford Road, Manchester, M13 9PL, UNITED KINGDOM.
  3. Prof. Laszlo TOTH, Bay Zoltán Foundation for Applied Research, Institute of Logistics and Production Engineering (BAY-LOGI), Iglói út 2, H-3519, Miskolctapolca, HUNGARY.
  4. Prof. Emmanuel GDOUTOS, Democritus University of Thrace, School of Engineering, GR-671 00, Xanthi, GREECE.
  5. Prof. Jacek ELIASZ, West Pomeranian University of Technology al. Piastów 17, 70-310 Szczecin, POLAND
  6. Prof. Jerzy KALETA, Wroclaw University of Technology, Institute of Materials Science and Applied Mechanics, Mechanical Faculty, Smoluchowskiego Street, 25, 50-372, Wroclaw, POLAND.
  7. Dr. Jorge Antonio GONZÁLEZ SÁNCHEZ, Universidad Autónoma de Campeche, Centro de Investigación en Corrosión, Departamento de Materiales y Corrosión, Av. Agustín Melgar s/n, entre Juan de la Barrera y Calle 20, C.P. 24030, Campeche, MEXICO.
  8. Dr. Narciso ACUÑA-GONZÁLEZ, Universidad Anáhuac Mayab, C.P. 97310 Mérida, Yucatán, MEXICO.