Position:
Senior research associate
Room number:
434-AK
Phone number:
+37037401918
Email:
Publications
Scientific article
2022
Ragaišis V. [LEI], Kaliatka T. [LEI], Poškas P. [LEI], Kaliatka A. [LEI], Šmaižys A. [LEI], Janulionis R. [LEI], Narkūnas E. [LEI], Sirvydas A. [LEI], Babilas E. [LEI], Rimkevičius S. [LEI].
A proposed approach for the evaluation of consequences of a large aircraft crash accident at an RBMK type reactor site during decommissioning
In: Progress in Nuclear Energy. Oxford: Elsevier, 2022, Vol. 145, 104135, p. 1-15. ISSN 0149-1970, eISSN 1878-4224.
2021
Janulionis R. [LEI], Dundulis G. [LEI], Grybėnas A. [LEI].
Numerical research of elastic-plastic fracture toughness of aged ferritic-martensitic steel
In: Engineering Failure Analysis. Oxford: Elsevier, 2021, Vol. 120, 105070, p. 1-10. ISSN 1350-6307.
2020
Janulionis R. [LEI], Dundulis G. [LEI], Grybėnas A. [LEI].
Numerical Research of Fracture Toughness of Aged Ferritic-Martensitic Steel
In: Metals. Basel: MDPI, 2020, Vol. 10 (12), 1686, p. 1-13. ISSN 2075-4701.
Saad D., Dundulis G. [LEI], Janulionis R. [LEI].
Calculation of SIFs for semi-elliptical surface cracks in U-shapedbellows expansion joints of Es-Salam research reactor vessel
In: Engineering Failure Analysis. Oxford: Elsevier, 2020, Vol. 111, 104481, p. 1-13. ISSN 1350-6307.
2019
Saad D., Dundulis G. [LEI], Janulionis R. [LEI].
Numerical simulation of SIF in Es-Salam research reactor vessel
In: Engineering Failure Analysis. Oxford: Elsevier, 2019, Vol. 96, p. 394-408. ISSN 1350-6307.
2018
Janulionis R. [LEI], Dundulis G. [LEI], Kriūkienė R. [LEI], Grybėnas A. [LEI].
Numerical prediction of mechanical properties of zirconium alloy with hydrides using finite element method
In: Energetika. Vilnius: Lietuvos mokslų akademija, 2018, T. 64, Nr. 1, p. 43-51. ISSN 0235-7208, eISSN 1822-8836.
2017
Dundulis G. [LEI], Janulionis R. [LEI], Karalevičius R. [LEI], Bykov V., Tereshchenko A., W7-X team.
Limit analysis of complex welds between plasma vessel and ports in W7-X cryostat system
In: Fusion Engineering and Design. 2017, Vol. 125, p. 98-108. ISSN 0920-3796.
Dundulis G. [LEI], Janulionis R. [LEI], Grybėnas A. [LEI], Makarevičius V. [LEI], Dundulis R..
Numerical and experimental investigation of low cycle fatigue behaviour in P91 steel
In: Engineering Failure Analysis. 2017, Vol. 79, p. 285-295. ISSN 1350-6307.
2016
Dundulis G. [LEI], Žutautaitė I. [LEI], Janulionis R. [LEI], Ušpuras E. [LEI], Rimkevičius S. [LEI], Eid M..
Integrated failure probability estimation based on structural integrity analysis and failure data: Natural gas pipeline case
In: Reliability Engineering & System Safety. Didžioji Britanija: Elsevier, 2016, Vol. 156, p. 195-202. ISSN 0951-8320.
Ušpuras E. [LEI], Rimkevičius S. [LEI], Urbonavičius E. [LEI], Kaliatka A. [LEI], Dundulis G. [LEI], Alzbutas R. [LEI], Stankūnas G. [LEI], Vaišnoras M. [LEI], Vileiniškis V. [LEI], Povilaitis M. [LEI], Kaliatka T. [LEI], Janulionis R. [LEI], Karalevičius R. [LEI], Voronov R. [LEI], Iešmantas T. [LEI], Kačegavičius T. [LEI].
Branduolių sintezės tyrimai Lietuvos energetikos institute
In: Energetika. Vilnius: Lietuvos mokslų akademija, 2016, T. 62, Nr. 3, p. 102-123. ISSN 0235-7208.
Conference paper
2018
Janulionis R. [LEI], Dundulis G. [LEI], Grybėnas A. [LEI].
Numerical Investigation of Hydrogen Influence on Stress Intensity Factor of Zirconium Alloy
In: Proceedings of 23rd International Conference “MECHANIKA 2018”. Druskininkai, 18 gegužės 2018 . Kaunas: Kauno technologijos universitetas, 2018, p. 58-61. ISSN 1822-2951.
2017
Janulionis R. [LEI].
Numerical investigation of J-integral
In: The 14th International Conference of Young Scientists on energy Issues (CYSENI 2017), Kaunas, Lithuania, May 25-26, 2017. Kaunas: Lietuvos energetikos institutas, 2017, p. 335-341. ISSN 1822-7554.
2016
Dundulis G. [LEI], Janulionis R. [LEI], Makarevičius V. [LEI], Grybėnas A. [LEI].
Fracture toughness numerical modelling of the martensitic chromium stell
In: 25th Anniversary International Conference on Metallurgy and Materials. Conference proceedings May 25th - 27th 2016 Hotel Voronez I, Brno, Czech Republic. Ostrava: Tanger Ltd, 2016, p. 592-597. ISBN 978-80-87294-67-3.
Janulionis R. [LEI], Dundulis G. [LEI], Grybėnas A. [LEI].
Numerical investigation of critical stress intensity factor
In: 13th Annual international conference of young scientists on energy issues (CYSENI 2016), Kaunas, Lithuania, May 26–27, 2016. Kaunas: LEI, 2016. Kaunas: Lietuvos energetikos institutas, 2016, p. 226-233. ISSN 1822-7554.
2015
Janulionis R. [LEI], Dundulis G. [LEI], Grybėnas A. [LEI].
Numerical simulation of high temperature fatigue test of the welded steel P91
In: 23rd Conference on Structural Mechanics in Reactor Technology Manchester (SMIRT23). United Kingdom: 2015, p. 1-8..
Žutautaitė I. [LEI], Dundulis R., Rimkevičius S. [LEI], Janulionis R. [LEI].
Integrated estimation of pipeline failure probability
In: Safety and Reliability: Methodology and Applications – Proceedings of the European safety and reliability conference ESREL 2014. Wroclaw, Poland, September 14-18, 2014. Wroclaw, Poland: 2015, p. 417-422. ISBN 978-1-138-02681-0.
Dundulis G. [LEI], Janulionis R. [LEI], Grybėnas A. [LEI].
Deterministic-probabilistic structural integrity analysis of the gas transmission pipelines
In: Proceedings of the 48th ESReDA Seminar, May 28-29, 2015. Wroclaw, Poland: 2015, p. 1-8..
International projects
Seventh Framework Programme (FP7)
1
Completed
01.09.2013 - 31.08.2016
The objective of the NUGENIA+ project is to support the NUGENIA Association in its role to coordinate and integrate European research on safety of the Gen II and III nuclear installatMore
2
Today, about 80% of all energy produced comes from the fossil fuel (oil, carbon, and natural gas). European scientists are developing environmentally friendly, safe, and renewable eneMore