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Seppo Tähtinen

  • Phone+358503549037
1981 …2013

Research output per year

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Research Output

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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

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

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

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

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

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

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

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

2002

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

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

Ultrasonic examination of ITER primary first wall small scale mock-ups DS-13J, DS-16J, DS-17J, PHD-1J, PHS-8J, PHS-7Jb and full scale panel P-PHS-1B

Jeskanen, H., Tähtinen, S. & Kauppinen, P., 2002, VTT Technical Research Centre of Finland. 22 p. (VTT Tuotteet ja tuotanto. Tutkimusraportti; No. BTUO73-021044).

Research output: Book/ReportReport

2001

Manufacturing of primary first wall panel by powder hipping

Tähtinen, S., 2001, Espoo: VTT Technical Research Centre of Finland. 17 p. (VTT Manufacturing Technology. Research Report; No. BVAL62-011128).

Research output: Book/ReportReport

Mechanical and fracture properties of neutron irradiated titanium alloys

Tähtinen, S., Moilanen, P. & Singh, B. N., 2001, VTT Technical Research Centre of Finland. 24 p. (VTT Manufacturing Technology. Research Report; No. BVAL62-001077).

Research output: Book/ReportReport

Mixed-mode fracture tests of mismatching copper-stainless steel HIP joints at room and elevated temperatures

Laukkanen, A. & Tähtinen, S., 2001, Espoo: VTT Technical Research Centre of Finland. 26 p. (VTT Manufacturing Technology. Research Report; No. BVAL64-011132).

Research output: Book/ReportReport

Stress corrosion cracking susceptibility of TIG welded and HIP bonded 316L(N) stainless steel: Status report - May 2001

Kosonen, A-M., Taivalaho, L. & Tähtinen, S., 2001, VTT Technical Research Centre of Finland. 24 p. (VTT Manufacturing Technology. Research Report; No. BVAL62-011129).

Research output: Book/ReportReport

Ultrasonic and metallographic examination of ITER vertical target prototype

Tähtinen, S., Jeskanen, H. & Kauppinen, P., 2001, VTT Technical Research Centre of Finland. 27 p. (VTT Manufacturing Technology. Research Report; No. BVAL62-011099).

Research output: Book/ReportReport

Ultrasonic examination of primary first wall small scale mock UPS and full scale panel, DS-15F, PHS-6F, P-PHS-1B

Jeskanen, H., Kauppinen, P. & Tähtinen, S., 2001, VTT Technical Research Centre of Finland. 11 p. (VTT Manufacturing Technology. Research Report; No. BVAL62-011137).

Research output: Book/ReportReport

Effects of multiple HIP thermal cycles and neutron irradiation on mechanical properties of copper alloys joint to stainless steel

Tähtinen, S. & Singh, B., 2000, VTT Technical Research Centre of Finland. 12 p. (VTT Manufacturing Technology. Research Report; No. BVAL62-001062).

Research output: Book/ReportReport

Non destructive examination of primary wall small scale mock-up. DS-6J

Jeskanen, H., Lahdenperä, K., Kauppinen, P. & Tähtinen, S., 2000, VTT Technical Research Centre of Finland. 10 p. (VTT Manufacturing Technology. Research Report; No. BVAL62-001040).

Research output: Book/ReportReport

Non destructive examination of primary wall small scale mock-up. DS-9J

Jeskanen, H., Lahdenperä, K., Kauppinen, P. & Tähtinen, S., 2000, VTT Technical Research Centre of Finland. 10 p. (VTT Manufacturing Technology. Research Report; No. BVAL62-001041).

Research output: Book/ReportReport

Non destructive examination of primary wall small scale mock-up. PHS-4K

Jeskanen, H., Lahdenperä, K., Kauppinen, P. & Tähtinen, S., 2000, VTT Technical Research Centre of Finland. 24 p. (VTT Manufacturing Technology. Research Report; No. BVAL62-001038).

Research output: Book/ReportReport

Non destructive examination of primary wall small scale mock-up. SSMU-DS-5K

Jeskanen, H., Lahdenperä, K., Kauppinen, P. & Tähtinen, S., 2000, VTT Technical Research Centre of Finland. 26 p. (VTT Manufacturing Technology. Research Report; No. BVAL62-001039).

Research output: Book/ReportReport

Non destructive examination of primary wall small scale mock up DS-14F

Jeskanen, H., Lahdenperä, K., Kauppinen, P. & Tähtinen, S., 2000, VTT Technical Research Centre of Finland. 25 p. (VALB; No. 404).

Research output: Book/ReportReport

Non destructive examination of primary wall small scale mock-up PH-P2F

Jeskanen, H., Lahdenperä, K., Kauppinen, P. & Tähtinen, S., 2000, VTT Technical Research Centre of Finland. 15 p. (VALB; No. 267).

Research output: Book/ReportReport

Non destructive examination of primary wall small scale mock-ups. DS-21, DS-31, DS-41, DS-7J, DS-8J, DS-10J, RH-1F

Jeskanen, H., Lahdenperä, K., Kauppinen, P. & Tähtinen, S., 2000, VTT Technical Research Centre of Finland. 24 p. (VTT Manufacturing Technology. Research Report; No. BVAL62-001036).

Research output: Book/ReportReport

Non destructive examination of primary wall small scale mock-ups. DS-5K

Jeskanen, H., Lahdenperä, K., Kauppinen, P. & Tähtinen, S., 2000, VTT Technical Research Centre of Finland. 24 p. (VTT Manufacturing Technology. Research Report; No. BVAL62-001037).

Research output: Book/ReportReport

Tensile and fracture toughness properties of copper alloys to stainless steel joints

Tähtinen, S. & Singh, B., 2000, VTT Technical Research Centre of Finland. 14 p. (VTT Manufacturing Technology. Research Report; No. BVAL62-001030).

Research output: Book/ReportReport

1998

Development of dielectric window to conductor assembly

Heikinheimo, L., Nuutinen, S. & Tähtinen, S., 1998, VTT Technical Research Centre of Finland. 41 p. (VALB; No. 294).

Research output: Book/ReportReport

FFUSION research programme 1993 1998: Final report of the Finnish fusion research programme

Karttunen, S., Ahola, H., Dumbrajs, O., Halme, A., Heikkinen, J., Heikkinen, V., Keinonen, J., Korhonen, R., Kurki-Suonio, T., Likonen, J., Pättikangas, T., Salomaa, R., Siuko, M., Teuho, J., Tähtinen, S. & Wasastjerna, F., 1998, Espoo: VTT Technical Research Centre of Finland. 158 p. (VTT Publications; No. 368).

Research output: Book/ReportReport

Open Access

Non destructive examination of primary wall small scale mock-up DS-1F

Jeskanen, H., Lahdenperä, K., Kauppinen, P. & Tähtinen, S., 1998, VTT Technical Research Centre of Finland. 34 p. (VALB, Vol. 280).

Research output: Book/ReportReport

Development of explosion welding (EXW) technique and characterisation of EXW joints

Tähtinen, S., Ehrnsten, U., Karjalainen-Roikonen, P., Moilanen, P., Kauppinen, P., Auerkari, P. & Rahka, K., 1997, Espoo: VTT Technical Research Centre of Finland. 30 p. (Liekki 2: Poltto- ja kaasutustekniikan tutkimusohjelma; No. VALB-220).

Research output: Book/ReportReport

NDE of explosion welded copper stainless steel first wall mock-up

Tähtinen, S., Kauppinen, P., Jeskanen, H., Lahdenperä, K. & Ehrnsten, U., 1997, VTT Technical Research Centre of Finland. 18 p. (Liekki 2: Poltto- ja kaasutustekniikan tutkimusohjelma; No. VALB-221).

Research output: Book/ReportReport

1994

Hydridivetyvarasto ja vedyn varastointikustannukset

Translated title of the contribution: Cost estimation of metal hydride hydrogen storage systemTähtinen, S., 1994, Espoo: VTT Technical Research Centre of Finland. 23 p. (VTT Tiedotteita - Meddelanden - Research Notes; No. 1584).

Research output: Book/ReportReport

1993

Ruostumattomien terästen turvalliset jälkikäsittelymenetelmät

Tähtinen, S., Varis, P., Carpen, L. & Ruusila, J., 1993, Espoo: VTT Technical Research Centre of Finland. (VTT Metallilaboratorio. Tutkimusraportti B; No. 227).

Research output: Book/ReportReport