Ulla Ehrnstén

Principle Scientist

  • Phone+358405354057
1989 …2020

Research output per year

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Research Output

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Chapter or book article
2017

Thermal ageing and EAC research for plant life management (THELMA)

Ehrnstén, U., Ahonen, M., Autio, J-M., Ivanchenko, M., Hurley, C., Toivonen, A., Mouginot, R., Ilola, R. & Hänninen, H., 2017, SAFIR2018 - The Finnish Research Programme on Nuclear Power Plant Safety 2015-2018: Interim Report. VTT Technical Research Centre of Finland, p. 319-330 (VTT Technology, Vol. 294).

Research output: Chapter in Book/Report/Conference proceedingChapter or book articleProfessional

Open Access
2013

Environmental influence on cracking susceptibility and ageing of nuclear materials (ENVIS)

Ehrnsten, U., Pakarinen, J., Karlsen, W., Hänninen, H., Mouginot, R., Soinila, E., Ahonen, M., Autio, J-M., Aaltonen, P. & Saukkonen, T., 2013, SAFIR2014. The Finnish Research Programme on Nuclear Power Plant Safety 2011-2014. Espoo: VTT Technical Research Centre of Finland, p. 268-282 (VTT Technology; No. 201).

Research output: Chapter in Book/Report/Conference proceedingChapter or book articleProfessional

Fracture mechanical characterisation of ferrite-austenite dissimilar metal welds (DMWs) for elevated temperature service in view of metallurgical mis-match

Nevasmaa, P., Holmström, P., Karjalainen-Roikonen, P., Sarikka, T., Ahonen, M., Mouginot, R., Ehrnsten, U., Brederholm, A., Aaltonen, P. & Hänninen, H., 2013, Baltica IX. International Conference on Life Management and Maintenance for Power Plants. VTT Technology 106. Espoo: VTT Technical Research Centre of Finland, p. 152-173

Research output: Chapter in Book/Report/Conference proceedingChapter or book articleProfessional

Open Access
2012

Corrosion and Stress Corrosion Cracking of Austenitic Stainless Steels

Ehrnstén, U., 2012, Comprehensive nuclear materials. Konings, R. J. M., Allen, T. R., Stoller, R. E. & Yamanaka, S. (eds.). Amsterdam: Elsevier, p. 93-104

Research output: Chapter in Book/Report/Conference proceedingChapter or book articleScientificpeer-review

Open Access
14 Citations (Scopus)

Lifetime prediction techniques for nuclear power plant systems

Aho-Mantila, I., Cronvall, O., Ehrnstén, U., Keinänen, H., Rintamaa, R., Saarenheimo, A., Simola, K. & Vesikari, E., 2012, Nuclear Corrosion Science and Engineering. Féron, D. (ed.). Cambridge, UK: Woodhead Publishing, p. 449-470 (Woodhead publishing series in energy, Vol. Number 22).

Research output: Chapter in Book/Report/Conference proceedingChapter or book articleScientificpeer-review

Open Access
1 Citation (Scopus)
2011

Influence of Material, Environment and Strain Rate on Environmentally Assisted Cracking of Austenitic Nuclear Materials (DEFSPEED): DEFSPEED summary report

Ehrnsten, U., Karlsen, W., Pakarinen, J., Ahonen, M., Kuivalainen, P., Ivanchenko, M., Saukkonen, T. & Hänninen, H., 2011, SAFIR2010: The Finnish Research Programme on Safety 2007-2010: Final Report. VTT Technical Research Centre of Finland, p. 440-452 (VTT Tiedotteita - Research Notes; No. 2571).

Research output: Chapter in Book/Report/Conference proceedingChapter or book articleProfessional

Open Access

Influence of Material, Environment and Strain Rate on Environmentally Assisted Cracking of Austenitic Nuclear Materials (DEFSPEED): Deformation localisation and EAC in inhomogeneous microstructures of austenitic stainless steels

Ehrnsten, U., Karlsen, W., Pakarinen, J., Saukkonen, T. & Hänninen, H., 2011, SAFIR2010: The Finnish Research Programme on Safety 2007-2010: Final Report. Espoo: VTT Technical Research Centre of Finland, p. 453-463 (VTT Tiedotteita - Research Notes; No. 2571).

Research output: Chapter in Book/Report/Conference proceedingChapter or book articleProfessional

Open Access
2009

Influence of material, environment and strain rate on environmentally assisted cracking of austenitic nuclear materials (DEFSPEED). Strain localisation in sensitised Type 304 stainless steel in simulated BWR-environment

Ehrnsten, U., Saukkonen, T. & Hänninen, H., 2009, SAFIR2010. The Finnish Research Programme on Nuclear Power Plant Safety 2007-2010: Interim Report. Espoo: VTT Technical Research Centre of Finland, p. 418-429 (VTT Tiedotteita - Meddelanden - Research Notes; No. 2466).

Research output: Chapter in Book/Report/Conference proceedingChapter or book articleProfessional

Open Access
2007

Crack growth behaviour of low-alloy steels for pressure boundary components under transient light water reactor operating conditions - CASTOC, Part 1: BWR/NWC Conditions

Ritter, S., Seifert, H. P., Devrient, B., Roth, A., Ehrnstén, U., Ernestova, M., Zamboch, M., Föhl, J., Weissenberg, T., Gomez-Briceno, D. & Lapena, J., 2007, Corrosion issues in light water reactors: Stress corrosion cracking. Féron, D. (ed.). Woodhead Publishing, p. 165-185 (European Federation of Corrosion Publications, Vol. 51).

Research output: Chapter in Book/Report/Conference proceedingChapter or book articleProfessional

1 Citation (Scopus)

Crack growth behaviour of low-alloy steels for pressure boundary components under transient light water reactor operating conditions - CASTOC, Part 2: VVER Conditions

Ernestova, M., Zamboch, M., Devrient, B., Föhl, J., Ehrnstén, U., Gomez-Briceno, D., Lapeña, J., Ritter, S., Roth, A., Seifert, H. P. & Weissenberg, T., 2007, Corrosion issues in light water reactors: Stress corrosion cracking. Féron, D. & Olive, J-M. (eds.). Cambridge: Woodhead Publishing, p. 186-199 (European Federation of Corrosion Publications, Vol. 51).

Research output: Chapter in Book/Report/Conference proceedingChapter or book articleProfessional

Open Access

Dynamic strain ageing of deformed nitrogen-alloyed AISI 316 stainless steels

Ehrnstén, U., Toivonen, A., Ivanchenko, M., Nevdacha, V. V., Yagozinskyy, Y. & Hänninen, H., 2007, Corrosion Issues in Light Water Reactors: Stress Corrosion Cracking. Féron, D. (ed.). Cambridge, England: Woodhead Publishing, p. 103-118 (European Federation of Corrosion Publications, Vol. 51).

Research output: Chapter in Book/Report/Conference proceedingChapter or book articleProfessional