Rami Pohja

20032019
If you made any changes in Pure these will be visible here soon.

Research Output 2003 2019

Filter
Report
2018
5 Downloads (Pure)

Experimentally verified model based predictions for integrity of copper overpack: Annual report 2017

Rantala, J., Pohja, R. & Auerkari, P., 23 Mar 2018, Espoo: VTT Technical Research Centre of Finland. 17 p. (VTT Research Report; No. VTT-R-01499-18).

Research output: Book/ReportReport

Open Access
File
Creep
Creep testing
Copper
Testing
Metallography
2017

Determination of high temperature material properties of 15-15Ti steel by small specimen techniques

Holmström, S., Simonovski, I., de Haan, F., Lapetite, J-M., Balardi, D., Serrano, M., Altstadt, E., Aktaa, J., Radu, V., Namburi, H., Cristalli, C., Pohja, R., Delville, R. & Courcelle, A., 2017, European Union. 118 p. (EU Publications, Vol. EUR 28746 EN).

Research output: Book/ReportReport

Open Access
Materials properties
Tensile strength
Steel
Anisotropy
Tensile properties

Lämmönvaihtimen RBI

Auerkari, P., Pohja, R., Tuurna, S. & Tuhti, A., 2017, VTT Technical Research Centre of Finland. (VTT Tutkimusraportti; No. VTT-R-04939-16).

Research output: Book/ReportReport

Report on an experimental campaign on cladding transient behaviour

Pohja, R. & Huotilainen, S., 2017, VTT Technical Research Centre of Finland. (VTT Research Report, Vol. VTT-R-00799-17).

Research output: Book/ReportReport

Creep
Zirconium
Zirconium alloys
Nuclear fuels
Recovery

Report on challenges for SCIs

Walther, G., Jovanovic, M., Vollmer, M., Desmond, G., Choudhary, A., Auerkari, P., Tuurna, S., Pohja, R., Koivisto, R., Molarius, R. & et al., 2017, European Commission EC. 85 p. (Smart Resilience Indicators for Smart Critical Infrastructures).

Research output: Book/ReportReport

Open Access
Industry
Decision making

Supervised RIsx: Defining resilience indicators based on risk assessment

Øien, K., Bodsberg, L., Hoem, Å., Øren, T., Molarius, R., Koivisto, R., Auerkari, P., Pohja, R., Tuurna, S. & et al., 2017, European Commission EC. 280 p. (Smart Resilience Indicators for Smart Critical Infrastructures).

Research output: Book/ReportReport

risk assessment
infrastructure
monitoring
crisis management
indicator

Test methodologies for determining high temperature material properties of thin walled tubes

Holmström, S., Bruchhausen, M., Nilsson, K-F., Pohja, R., Altstadt, E., Serrano, M., Radu, V., Cristalli, C., Aktaa, J., Namburi, H., Delville, R. & Courcelle, A., 2017, Luxembourg: European Union. 33 p. (EU Publications, Vol. EUR 28642 EN).

Research output: Book/ReportReport

Open Access
Materials properties
Tensile testing
Nuclear fuel cladding
Testing
Temperature
2015

Recommendation for creep and creep-fatigue assessment for P91 components

Pohja, R., Holmström, S. & Lee, H-Y., 2015, 43 p.

Research output: Book/ReportReport

Open Access
Creep
Fatigue of materials
Steel

State-of-the-art review of data on fuel cladding interaction in advanced fuels for Gen IV reactors

Dumas, J-C., Martinelli, L., Bottomley, D., Wallenius, J., Tulkki, V. & Pohja, R., 2015, European Commission EC. 91 p.

Research output: Book/ReportReport

Constitutive models
Nitrides
Piles
Data structures

Synthesis of the experimental work for the design rules improvement

Bernardi, D., Aktaa, J., Blat-Yrieix, M., Bruchhausen, M., Cristalli, C., Dolci, F., Holmström, S., Lee, H-Y., Matheron, P., Nilsson, K-F., Pohja, R., Vincent, W. & Zhang, K., 2015, 153 p.

Research output: Book/ReportReport

Creep
Fatigue of materials
Martensitic steel
Ferritic steel
Austenitic stainless steel
9 Citations (Scopus)

Synthesis of the recommendations

Aiello, G., Aktaa, J., Ancelet, O., Angiolini, M., Barbieri, G., Blat Yrieix, M., Dubiez-Le Goff, S., Dundulis, G., Forest, L., Giannuzzi, G., Grybenas, A., Holmström, S., Jia Chao, C., Lebarbé, T., Lee, H-Y., Matheron, P., Nilsson, K-F., Pohja, R., Schroer, C., Smith, G. & 2 others, Testani, C. & Zhang, K., 2015, European Commission EC.

Research output: Book/ReportReport

Uncertainty
2014

Creep-fatigue interaction rules for P91: MATTER – Deliverable D4.5

Pohja, R., Holmström, S., Nilsson, K-F., Payten, W., Lee, H-Y. & Aktaa, J., 2014, Rome, Italy. 64 p.

Research output: Book/ReportReport

Creep
Fatigue of materials
Ductility
Fatigue damage
Heat exchangers

Fiscal year report (9/2013 - 9/2014) of the Academy of Finland project IDEA (Interactive Modelling of Fuel Cladding Degradation Mechanisms)

Anderson, T., Huotilainen, S., Loukusa, H., Penttilä, S., Pohja, R. & Tulkki, V., 2014, VTT Technical Research Centre of Finland. 10 p. (Helsinki University of Technology: Systems Analysis Laboratory. A: Research Reports; No. VTT-R-05121-14).

Research output: Book/ReportReport

Lifing of high temperature plant: deterministic and probabilistic methods

Auerkari, P., Pohja, R., Yli-Olli, S., Rantala, J. & Laukkanen, A., 2014, VTT Technical Research Centre of Finland. 21 p. (VTT Research Report; No. VTT-R-00753-14).

Research output: Book/ReportReport

power plant
damage
method
temperature
trend

Relaxation of OFP copper

Auerkari, P., Pohja, R., Nurmela, A. & Rantala, J., 2014, Espoo: VTT Technical Research Centre of Finland. 12 p. (VTT Research Report; No. VTT-R-00366-14).

Research output: Book/ReportReport

phosphorus
cans
copper
oxygen
spent fuels
Stress relaxation
Sensitivity analysis
Creep
Copper
Phosphorus
2013

Spinning wheel materials

Auerkari, P., Salonen, J., Pohja, R., Nevasmaa, P. & Yli-Olli, S., 2013, VTT Technical Research Centre of Finland. 28 p. (VTT Research Report; No. VTT-R-05845-13).

Research output: Book/ReportReport

erosion
melt
wool
mineral deposit
surface temperature

Tube failure of the heat exchanger E-20-128

Auerkari, P., Pohja, R. & Salonen, J., 2013, VTT Technical Research Centre of Finland. 20 p. (VTT Research Report; No. VTT-R-05631-13).

Research output: Book/ReportReport

Heat exchangers
Perforating
Oxides
Inspection
Corrosion
2010

Properties of FeCrAl Alloys and Austenitic Stainless Steel for Boiler Environments

Pohja, R. & Hänninen, H., 2010, Espoo: Aalto University. 97 p. (Aalto yliopiston teknillinen korkeakoulu: Koneenrakennustekniikan laitos, Vol. 2/10).

Research output: Book/ReportReport

Austenitic stainless steel
Boilers
Corrosion resistance
Welding
Joining
2003

Narrow Gap Arc Welding Experiments of Thick Copper Sections

Pohja, R., Vestman, H., Jauhiainen, P. & Hänninen, H., 2003, Posiva . 41 p. (Posiva-raportti - Posiva Report; No. POSIVA-2003-09).

Research output: Book/ReportReport

Open Access
Electric arc welding
Welding
Copper
Experiments
Spent fuels