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Seppo Tähtinen

  • Phone+358503549037
1981 …2013

Research output per year

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Research Output

2013

A comparative TEM study of in-reactor and post-irradiation tensile tested copper

Pakarinen, J., Tähtinen, S. & Singh, B. N., 2013, In : Journal of Nuclear Materials. 442, 1-3 suppl.1, p. S821-S825

Research output: Contribution to journalArticleScientificpeer-review

1 Citation (Scopus)

Assessment of materials data for blanket materials within the European contribution to ITER

Wikman, S., Peacock, A., Zlamal, O., Öijerholm, J., Tähtinen, S., Rödig, M., Marmy, P., Gillia, O., Lorenzetto, P. & Heikkinen, S., 2013, In : Journal of Nuclear Materials. 442, Supplement, p. S414-S419 6 p.

Research output: Contribution to journalArticleScientificpeer-review

6 Citations (Scopus)

Fusion Engineering and Design: Special issue: 22nd Symposium on Fusion Technology

Tähtinen, S. (ed.), Asikainen, M. (ed.), Rintamaa, R. (ed.) & Tuomisto, H. (ed.), 2013, In : Fusion Engineering and Design. 69, 1-4, 828 p.

Research output: Contribution to journalSpecial issue (editor)Scientificpeer-review

2012

Review on irradiation creep

Tähtinen, S. & Huotilainen, S., 2012, Espoo: VTT Technical Research Centre of Finland. 28 p. (VTT Research Report; No. VTT-R-02354-12).

Research output: Book/ReportReport

2011

Renewal of Active Materials Research Infrastructure (AKTUS): AKTUS summary report

Tähtinen, S., 2011, SAFIR2010: The Finnish Research Programme on Safety 2007-2010: Final Report. Espoo: VTT Technical Research Centre of Finland, p. 464-466 (VTT Tiedotteita - Research Notes; No. 2571).

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

Open Access
2009

Integrated infrastructure initiatives for material testing reactor innovations

Dekeyser, J., Iracane, D., Bakker, K., Böck, H., Chen, J., Dousson, T., Gonnier, C., Guigon, A., Gaillot, S., Heyse, J., Kysela, J., Marques, J., Martin-Fuertes, F., Parrat, D., Pierre, J., Schuurmans, P., Tähtinen, S. & Vermeeren, L., 2009. 21 p.

Research output: Contribution to conferenceConference articleScientificpeer-review

Material solutions for efficient energy technologies: VTT perspective

Ritschkoff, A-C., Lindroos, T., Holmström, S., Kauranen, P., Kauppinen, P., Karttunen, S. & Tähtinen, S., 2009.

Research output: Contribution to conferenceOther conference contributionScientific

MELODIE: An advanced device for study of the irradiation creep of LWR cladding with online biaxial control of stress and strain

Guimbal, P., Auclair, M., Carassou, S., Moilanen, P., Tähtinen, S. & Villard, J-F., 2009. 5 p.

Research output: Contribution to conferenceConference articleScientificpeer-review

2008

Final report on in-reactor creep-fatigue deformation behaviour of a CuCrZr alloy: COFAT 2

Singh, B. N., Johansen, B. S., Tähtinen, S., Moilanen, P., Saarela, S., Jacquet, P., Dekeyser, J. & Stubbins, J. F., 2008, Roskilde, DK. 41 p. (Risø-R; No. 1629(EN)).

Research output: Book/ReportReport

Neutron dose and temperature effects on mechanical properties of titanium alloys

Tähtinen, S., Moilanen, P. & Singh, B. N., 2008, Proceedings of the 29th Risø International Symposium on Materials Science . Roskilde, DK, p. 367-372 6 p.

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

Report on in-reactor interrupted tensile tests of OFHC copper - SITU2

Tähtinen, S., Singh, B. N. & Moilanen, P., 2008, Espoo: VTT Technical Research Centre of Finland. 32 p. (VTT Research Report; No. VTT-R-07935-08).

Research output: Book/ReportReport

Status of the EU R&D programme on the blanket-shield modules for ITER

Lorenzetto, P., Boireau, B., Boudot, C., Bucci, P., Frayssines, P. E., Furmanek, A., Hajek, P., Gillia, O., Peacock, A., Ricapito, I., Roedig, M., Sherlock, P., Schmalz, F. & Tähtinen, S., 2008, In : Fusion Engineering and Design. 83, 7-9, p. 1015 - 1019 5 p.

Research output: Contribution to journalArticleScientificpeer-review

10 Citations (Scopus)

Testing of Irradiated CuCrZr/SS Joints Produced Under Different Blanket Manufacturing Conditions

Tähtinen, S. & Singh, B. N., 2008, Espoo: VTT Technical Research Centre of Finland. 24 p. (VTT Research Report; No. VTT-R-03023-08).

Research output: Book/ReportReport

2007

Effect of displacement dose and irradiation temperature on tensile and fracture toughness properties of titanium alloys

Tähtinen, S., Moilanen, P. & Singh, B. N., 2007, In : Journal of Nuclear Materials. 367-370 , Part A, p. 627-632

Research output: Contribution to journalArticleScientificpeer-review

6 Citations (Scopus)

Effect of heat treatments on precipitate microstructure and mechanical properties of a CuCrZr alloy

Edwards, D. J., Singh, B. N. & Tähtinen, S., 2007, In : Journal of Nuclear Materials. 367-370 , Part B, p. 904-909

Research output: Contribution to journalArticleScientificpeer-review

56 Citations (Scopus)

Final report on in-reactor creep-fatigue deformation behaviour of a CuCrZr alloy: COFAT 1

Singh, B. N., Tähtinen, S., Moilanen, P., Jacquet, P., Dekeyser, J., Edwards, D. J., Li, M. & Stubbins, J. F., 2007, 45 p. (Risø-R; No. R-1571(EN)).

Research output: Book/ReportReport

Open Access

Final report on in-reactor uniaxial tensile deformation of pure iron and Fe-Cr alloy

Singh, B. N., Huang, X., Tähtinen, S., Moilanen, P., Jacquet, P. & Dekeyser, J., 2007, Roskilde, Denmark. 51 p. (Risø-R; No. 1616(EN)).

Research output: Book/ReportReport

Open Access

In-Reactor creep-fatigue tests in BR2 test reactor - design, construction and calibration of loading devices

Moilanen, P., Saarela, S., Tähtinen, S., Singh, B. N., Jacquet, P. & Dekeyser, J., 2007, Espoo: VTT Technical Research Centre of Finland. 32 p. (VTT Research Report; No. VTT-R-06943-07).

Research output: Book/ReportReport

2006

Manufacturing of ITER Primary First Wall panel by powder HIP method

Tähtinen, S., 2006, Espoo: VTT Technical Research Centre of Finland. 27 p. (VTT Research Report; No. VTT-R-04642-06).

Research output: Book/ReportReport

2005

Effect of heat treatment and neutron irradiation on tensile and fracture toughness properties of CuCrZr/316L(N) HIP joints

Tähtinen, S. & Singh, B. N., 2005, Espoo: VTT Technical Research Centre of Finland. 13 p. (VTT Tuotteet ja tuotanto. Tutkimusraportti; No. BTUO73-041299).

Research output: Book/ReportReport

Effects of neutron irradiation on mechanical properties of titanium alloys

Tähtinen, S. & Singh, B. N., 2005, Espoo: VTT Technical Research Centre of Finland. 18 p. (VTT Research Report; No. BTUO73-051386).

Research output: Book/ReportReport

Experimental material irradiation on the Jules Horowitz Reactor

Carassou, S., Panichi, G., Julien, F., Yvon, P., Auclair, M., Tähtinen, S., Roux, L., Moilanen, P. & Maire, S., 2005, Joint Meeting of the National Organization of Test, Research, and Training Reactors and the International Group on Research Reactors.

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

Fracture behaviour of HIP joints between CuCrZr alloy and 316L(N) stainless steel

Tähtinen, S. & Saarela, S., 2005, Espoo: VTT Technical Research Centre of Finland. 13 p. (VTT Tutkimusraportti; No. BTUO73-051390).

Research output: Book/ReportReport

In-reactor creep-fatigue tests of a CuCrZr alloy at about 333K

Moilanen, P., Tähtinen, S., Singh, B. N., Jacquet, P. & Dekeyser, J., 2005.

Research output: Contribution to conferenceConference articleScientificpeer-review

In-reactor deformation behaviour of copper and CuCrZr alloy: Experiments, results and implications

Singh, B. N., Tähtinen, S., Moilanen, P., Jacquet, P., Dekeyser, J. & Edwards, D. J., 2005.

Research output: Contribution to conferenceConference articleScientificpeer-review

Manufacture of blanket shield modules for ITER

Lorenzetto, P., Boireau, B., Boudot, C., Bucci, P., Furmanek, A., Ioki, K., Liimatainen, J., Peacock, A., Sherlock, P. & Tähtinen, S., 2005, In : Fusion Engineering and Design. 75-79, p. 291 - 296 6 p.

Research output: Contribution to journalArticleScientificpeer-review

16 Citations (Scopus)

Mechanical testing under simultaneous neutron irradiation

Moilanen, P. & Tähtinen, S., 2005, Industrial Systems Review 2005. Kleemola, H. (ed.). VTT Technical Research Centre of Finland, p. 90-93 (Industrial systems review; No. 2005).

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

Qualification of CuCrZr alloy to stainless steel joints

Tähtinen, S., Moilanen, P. & Singh, B. N., 2005.

Research output: Contribution to conferenceConference AbstractScientific

Slow strain rate tests of copper stainless steel joint samples

Saarela, S. & Tähtinen, S., 2005, Espoo: VTT Technical Research Centre of Finland. 19 p. (VTT Tuotteet ja tuotanto. Tutkimusraportti; No. BTUO73-051345).

Research output: Book/ReportReport

2004

Effect of Heat Treatments on Precipitate Microstructure and Mechanical Properties of CuCrZr Alloy

Singh, B. N., Edwards, D. J. & Tähtinen, S., 2004, 24 p. (Risø-R; No. 1436(EN)).

Research output: Book/ReportReport

Open Access

Final Report on In-Reactor Tensile Tests on OFHC -Copper and CuCrZr Alloy

Singh, B. N., Edwards, D. J., Tähtinen, S., Moilanen, P., Jacquet, P. & Dekeyser, J., 2004, Roskilde. 47 p. (Risø-R; No. 1481(EN)).

Research output: Book/ReportReport

Open Access

Overview of recent European materials R&D activities related to ITER

Peacock, A. T., Barabash, V., Dänner, W., Rödig, M., Lorenzetto, P., Marmy, P., Merola, M., Singh, B. N., Tähtinen, S., van der Laan, J. & Wu, C. H., 2004, In : Journal of Nuclear Materials. 329-333, p. 173-177 5 p.

Research output: Contribution to journalArticleScientificpeer-review

25 Citations (Scopus)

Transferability properties of local approach modeling in the ductile to brittle transition region

Laukkanen, A., Wallin, K., Nevasmaa, P. & Tähtinen, S., 2004, Predictive Material Modeling: Combining Fundamental Physics Understanding, Computational Methods and Empirically Observed Behavior. American Society for Testing and Materials ASTM, p. 22-47 26 p. (ASTM Selected Technical Papers, Vol. 1429).

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

1 Citation (Scopus)

TW2-TVV-SITU: In-situ investigation of the mechanical performance and life time of copper

Moilanen, P., Tähtinen, S., Singh, B. N. & Jacquet, P., 2004, VTT Technical Research Centre of Finland. 24 p. (VTT Research Report; No. BTUO76-031127).

Research output: Book/ReportReport

2003

22nd Symposium on Fusion Technology: Book of Abstracts

Tähtinen, S. (ed.), Asikainen, M. (ed.), Rintamaa, R. (ed.) & Tuomisto, H. (ed.), 2003, VTT Technical Research Centre of Finland. 509 p. (VTT Symposium; No. 220).

Research output: Book/ReportBook (editor)

Open Access

Deformation behaviour of pure copper during in-reactor tensile tests at 90 °C

Singh, B. N., Tähtinen, S., Moilanen, P., Jacquet, P., Dekeyser, J. & Edwards, D. J., 2003, Abstracts ICFRM-11. 2 p.

Research output: Chapter in Book/Report/Conference proceedingConference abstract in proceedingsScientific

Fusion Engineering and Design: Special issue: 22nd Symposium on Fusion Technology

Tähtinen, S. (ed.), Asikainen, M. (ed.), Rintamaa, R. (ed.) & Tuomisto, H., 2003, In : Fusion Engineering and Design. 66-68, 1236 p.

Research output: Contribution to journalSpecial issue (editor)Scientificpeer-review

In-reactor uniaxial tensile testing of pure copper at a constant strain rate at 90 ºC

Singh, B. N., Tähtinen, S., Moilanen, P., Jacquet, P. & Dekeyser, J., 2003, In : Journal of Nuclear Materials. 320, 3, p. 299-304 6 p.

Research output: Contribution to journalArticleScientificpeer-review

12 Citations (Scopus)

Ultrasonic studies on ITER divertor and first wall prototype modules

Pitkänen, J., Kauppinen, P., Jeskanen, H., Tähtinen, S. & Sandlin, S., 2003, In : Fusion Engineering and Design. 66-68, p. 359-364 6 p.

Research output: Contribution to journalArticleScientificpeer-review

2 Citations (Scopus)
2002

Examination on fracture resistance of F82H steel and performance of small specimens in transition and ductile regimes

Wallin, K., Laukkanen, A. & Tähtinen, S., 2002, Small Specimen Test Techniques. Sokolov, M., Landes, J. & Lucas, G. (eds.). American Society for Testing and Materials ASTM, Vol. 4. p. 33-47 (ASTM Selected Technical Papers, Vol. 1418).

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

6 Citations (Scopus)

Non-destructive testing of divertor components

Merola, M., Chappuis, P., Escourbiac, F., Grattarola, M., Jeskanen, H., Kauppinen, P., Plöchl, L., Schedler, B., Schlosser, J., Smid, I., Tähtinen, S., Vesprini, R., Visca, E. & Zabernig, A., 2002, In : Fusion Engineering and Design. 61-62, p. 141-146

Research output: Contribution to journalArticleScientificpeer-review

24 Citations (Scopus)

Properties of copper-stainless steel HIP joints before and after neutron irradiation

Tähtinen, S., Laukkanen, A., Singh, B. N. & Toft, P., 2002, In : Journal of Nuclear Materials. 307-311, Part 2, p. 1547-1553

Research output: Contribution to journalArticleScientificpeer-review

3 Citations (Scopus)

Specification of properties and design allowables for copper alloys used in HHF components of ITER: Section 7. Metals other than steels, V and Be

Kalinin, G. M., Fabritziev, S. A., Singh, B. N., Tähtinen, S. & Zinkle, S. J., 2002, In : Journal of Nuclear Materials. 307-311, Part 1, p. 668-672

Research output: Contribution to journalArticleScientificpeer-review

24 Citations (Scopus)

Status of fabrication development for plasma facing components in the EU

Daenner, W., Merola, M., Lorenzettoa, P., Peacock, A., Bobin-Vastra, I., Briottet, L., Buccic, P., Conchon, D., Erskine, A., Escourbia, F., Febvre, M., Grattarola, M., Hjorth, C. G., Hofmann, G., Ilzhoefer, A., Lill, K., Lind, A., Linke, J., Richards, W., Rigal, E. & 6 others, Roedig, M., Saint-Antonin, F., Schedler, B., Schlosser, J., Tähtinen, S. & Visca, E., 2002, In : Fusion Engineering and Design. 61-62, p. 61-70

Research output: Contribution to journalArticleScientificpeer-review

27 Citations (Scopus)

Stress corrosion cracking susceptibility of TIG welded and HIP bonded 316L(N) stainless steel

Tähtinen, S., Kosonen, A-M. & Taivalaho, L., 2002, VTT Technical Research Centre of Finland. 29 p. (VTT Research Report; No. BTUO73-021064).

Research output: Book/ReportReport

Tensile and fracture toughness properties of unirradiated and neutron irradiated titanium alloys

Tähtinen, S., Moilanen, P., Singh, B. N. & Edwards, D. J., 2002, In : Journal of Nuclear Materials. 307-311, Part 1, p. 416-420

Research output: Contribution to journalArticleScientificpeer-review

17 Citations (Scopus)

The 22nd Symposium on Fusion Technology. Helsinki, FI, 9th - 13th September 2002. Book of Abstracts

Tähtinen, S. (ed.), Rintamaa, R. (ed.), Asikainen, M. (ed.) & Tuomisto, H. (ed.), 2002, Espoo: VTT Technical Research Centre of Finland. 507 p. (VTT Symposium; No. 220).

Research output: Book/ReportBook (editor)

Open Access

Ultrasonic examination of ITER primary first wall modules PFW-5 and PFW-6

Jeskanen, H., Tähtinen, S. & Kauppinen, P., 2002, VTT Technical Research Centre of Finland. 14 p. (VTT Tuotteet ja tuotanto. Tutkimusraportti; No. BTUO73-021043).

Research output: Book/ReportReport

Ultrasonic examination of ITER primary first wall panel P-SSP-1

Jeskanen, H., Tähtinen, S. & Kauppinen, P., 2002, VTT Technical Research Centre of Finland. 14 p. (VTT Tuotteet ja tuotanto. Tutkimusraportti; No. BTUO73-021063).

Research output: Book/ReportReport