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Research Output

Structural integrity of Ni-base alloy welds

Hänninen, H., Brederholm, A., Sarikka, T., Mouginot, R., Holmström, P., Saukkonen, T., Toivonen, A., Karjalainen-Roikonen, P., Nevasmaa, P., Keinänen, H., Leskelä, E., Ahonen, M., Ehrnsten, U. & Aaltonen, P., 2014, Espoo: VTT Technical Research Centre of Finland. 264 p. (VTT Technology, Vol. 175).

Research output: Book/ReportReport

Open Access
Structural integrity
Welds
Dissimilar metals
Filler metals
Boiling water reactors
Weldability
Structural integrity
Ships
Welding
Fatigue of materials

Monitoring of the Structural Integrity of Reactor Circuit (RAKEMON): RAKEMON summary report

Koskinen, A., Sandlin, S., Jäppinen, T., Sarkimo, M., Vepsäläinen, M. & Leskelä, E., 2011, SAFIR2010: The Finnish Research Programme on Safety 2007-2010: Final Report. Espoo: VTT Technical Research Centre of Finland, p. 392-401 (VTT Tiedotteita - Research Notes; No. 2571).

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

Open Access
Structural integrity
Inspection
Magnetite
Steam generators
Networks (circuits)

Monitoring of the Structural Integrity of Reactor Circuit (RAKEMON): Linear and nonlinear ultrasonic techniques for evaluation of partially closed cracks

Sandlin, S. & Koskinen, A., 2011, SAFIR2010: The Finnish Research Programme on Safety 2007-2010: Final Report. Espoo: VTT Technical Research Centre of Finland, p. 402-413 (VTT Tiedotteita - Research Notes; No. 2571).

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

Open Access
Structural integrity
Ultrasonics
Cracks
Networks (circuits)
Monitoring
2 Citations (Scopus)

Link between flight maneuvers and fatigue

Jylhä, J., Ruotsalainen, M., Salonen, T., Janhunen, H., Venäläinen, I., Siljander, A. & Visa, A., 2011, Proceedings of the 26th Symposium of the International Committee on Aeronautical Fatigue. p. 453-463

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

Fatigue of materials
Aircraft
Structural integrity
Data structures
Aging of materials
32 Citations (Scopus)

Validation of constraint-based methodology in structural integrity of ferritic steels for nuclear reactor pressure vessels

Lidbury, D. P. G., Sherry, A. H., Bass, B. R., Gilles, P., Connors, D., Eisele, U., Keim, E., Keinänen, H., Wallin, K., Lauerova, D., Marie, S., Nagel, G., Nilsson, K., Siegele, D. & Wadier, Y., 2006, In : Fatigue & Fracture of Engineering Materials & Structures. 29, 9-10, p. 829-849 21 p.

Research output: Contribution to journalArticleScientificpeer-review

Ferritic steel
Structural integrity
Nuclear reactors
Pressure vessels
Fracture toughness

Observations of component and specimen behaviour in fatigue

Rahka, K., 2004, BALTICA VI - Life management and maintenance for power plants. Vol. 2. Espoo: VTT Technical Research Centre of Finland, p. 409-418 (VTT Symposium; No. 234).

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

Open Access
Fatigue of materials
Finite element method
Shear strain
Structural integrity
Plasticity

Structural analysis 1992

Mikkola, T. (ed.), 1992, Espoo: VTT Technical Research Centre of Finland. 179 p. (VTT Symposium; No. 128).

Research output: Book/ReportBook (editor)

Structural analysis
Technical presentations
Structural integrity
Structural dynamics
Vibration analysis
4 Citations (Scopus)

Towards automated flight-maneuver-specific fatigue analysis

Jylhä, J., Ruotsalainen, M., Salonen, T., Janhunen, H., Viitanen, T., Vihonen, J. & Visa, A., 2009, Proceedings of the 25th Symposium of the International Committee on Aeronautical Fatigue. Springer, p. 1121-1134

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

Fatigue of materials
Aircraft
Structural health monitoring
Fatigue damage
Structural integrity

A review of aeronautical fatigue investigations in Finland March 2013 - February 2015

Siljander, A. & Varis, P., 2015, 36 p. (VTT Research Report, Vol. VTT-CR-01811-15).

Research output: Book/ReportReport

Open Access
Fatigue of materials
Fixed wings
Military aircraft
Structural integrity
Aviation

Simulation and Analysis of Data for Enhancing Low Cycle Fatigue Test Procedures

Sarajärvi, U. & Cronvall, O., 2006, Espoo: VTT Technical Research Centre of Finland. 32 p. (VTT Research Report; No. TUO72-056604).

Research output: Book/ReportReport

A review of aeronautical fatigue investigations in Finland March 2015 - March 2017

Viitanen, T., Varis, P. & Siljander, A., 2017, VTT Technical Research Centre of Finland. 61 p. (VTT Research Report; No. VTT-CR-02002-17).

Research output: Book/ReportReport

Open Access
Fatigue of materials
Fixed wings
Military aircraft
Structural integrity
Air

Treatment and numerical simulation of fatigue data of austenitic stainless piping steels

Cronvall, O. & Sarajärvi, U., 2005, VTT Technical Research Centre of Finland. 52 p. (VTT Tuotteet ja tuotanto. Tutkimusraportti; No. BTUO72-041317).

Research output: Book/ReportReport

28 Citations (Scopus)

Assessment of reactor vessel integrity (ARVI)

Sehgal, B. R., Karbojian, A., Giri, A., Kymäläinen, O., Bonnet, J. M., Ikonen, K., Sairanen, R., Bhandari, S., Buerger, M., Dienstbier, J., Techy, Z. & Theofanous, T., 2005, In : Nuclear Engineering and Design. 235, 2-4, p. 213 - 232 20 p.

Research output: Contribution to journalArticleScientificpeer-review

integrity
vessels
vessel
reactors
melt
2 Citations (Scopus)

Engineering models for softening and relaxation of Gr. 91 steel in creep-fatigue conditions

Holmström, S., De Haan, F., Föhrer, U., Pohja, R. & Janousek, J., 1 Jan 2017, In : International Journal of Structural Integrity. 8, 6, p. 670-682 13 p.

Research output: Contribution to journalArticleScientificpeer-review

Open Access
Creep
Fatigue of materials
Steel
Fatigue damage
Hardening

Hawk Mk 51/51A/66 Tailplane Full-Scale Fatigue Tests

Laakso, R., Kettunen, J. & Lähteenmäki, J., 1 Jan 2020, Structural Integrity in the Age of Additive Manufacturing: ICAF 2019. Komorowski, J. & Niepokolczycki, A. (eds.). Springer, p. 801-815 15 p. (Lecture Notes in Mechanical Engineering).

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

Inspection
Fatigue of materials
Rivets
Cracks
Skin
3 Citations (Scopus)

Evaluation of structural defects in brazed ceramic-to-metal joints with C-mode scanning acoustic microscopy

Kauppinen, P. & Kivilahti, J., 1991, In : NDT & E International. 24, 4, p. 187 - 190 4 p.

Research output: Contribution to journalArticleScientificpeer-review

metal joints
cracks
Metals
ceramics
microscopy

Phased Array Ultrasonic Sizing Performance on Artificially Produced Fatigue Cracks in Austenitic Stainless Steel Weld

Koskinen, A. & Leskelä, E., Jun 2018.

Research output: Contribution to conferenceOther conference contributionScientificpeer-review

Open Access
Austenitic stainless steel
Welds
Ultrasonics
Defects
Nuclear power plants
176 Downloads (Pure)

A Review of Aeronautical Fatique Investigations in Finland April 2017 - March 2019

Viitanen, T. (ed.) & Siljander, A. (ed.), 30 Apr 2019, VTT Technical Research Centre of Finland. 75 p. (ICAF National Review - Finland; No. VTT-CR-00352-19).

Research output: Book/ReportReport

Open Access
File
Fatigue of materials
Military aircraft
Structural integrity
Air
Aviation

Ultrasonic studies on iter divertor and first wall prototype modules

Pitkänen, J., Kauppinen, P., Jeskanen, H., Tähtinen, S. & Sandlin, S., 2002, 22nd Symposium on Fusion Technology: Book of Abstracts. Espoo: VTT Technical Research Centre of Finland, p. 78-78 B-36. (VTT Symposium; No. 220).

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

Open Access
modules
ultrasonics
prototypes
manufacturing
integrity

Status of selected European research projects on equipment durability

Solin, J. (ed.), 1995, Espoo: VTT Technical Research Centre of Finland. 84 p. (VTT Tiedotteita - Meddelanden - Research Notes; No. 1676).

Research output: Book/ReportReport

Durability
Structural integrity
Fatigue of materials
Engineers
Industry

Comparison of Artificial flaws in Austenitic Steel Welds with NDE Methods

Koskinen, A. & Leskelä, E., 2015, Proceedings of the 11th international conference on NDE in relation to structural integrity for nuclear and pressurized components. European Union

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

Open Access
Austenitic steel
Nondestructive examination
Welds
Defects
Cracks

Producing a POD curve with emulated signal response data

Koskinen, T., Virkkunen, I., Papula, S., Sarikka, T. & Haapalainen, J., 2018, In : Insight: Non-Destructive Testing and Condition Monitoring. 60, 1, p. 42-48 7 p.

Research output: Contribution to journalArticleScientificpeer-review

Inspection
Cracks
Ultrasonic testing
Thermal fatigue
Structural integrity
11 Citations (Scopus)

Dissimilar metal weld joints and their performance in nuclear power plant and oil refinery conditions

Hänninen, H., Aaltonen, P., Brederholm, A., Ehrnstén, U., Gripenberg, H., Toivonen, A., Jorma, P. & Virkkunen, I., 2006, Espoo: VTT Technical Research Centre of Finland. 212 p. (VTT Tiedotteita - Meddelanden - Research Notes; No. 2347).

Research output: Book/ReportReport

Open Access
Dissimilar metals
Nuclear power plants
Welds
Nickel
Metals