Usability and failure mechanisms of materials
Managing the usability and ageing of structures and components throughout a power or process plant’s service life requires identification and evaluation of the degradation mechanisms of structural materials in actual service environments. VTT’s competence in this area includes::
Comprehensive understanding of the relationships between material
microstructure, external loading and environmental factors leading to
corrosion and degradation phenomena.
Innovative techniques for experimental investigations and modelling of
material damage and failure mechanisms under controlled conditions of
temperature, pressure and radiation in gaseous and liquid environments (actual
Experimental and modelling capabilities regarding fracture mechanics of single
and multi component materials and interfaces, including the “Master Curve”
Safe and reliable use and life extension of power and process plants by:
identifying and verifying failure mechanisms under aggressive conditions.
contributing to proactive degradation assessments for plant lifetime
management, plant life extensions and power upgrades.
supporting licensing of nuclear components, such as reactor pressure vessels.
Experimental platforms for
Participation in national and international programmes and networks:
SAFIR2010, KYT2010, EU-PERFORM60, EU-MTR-I3, EU-ANTIOXI, OECD Halden reactor
project, IAEA FUWAC.
Handling and mechanical testing of activated materials in Hot-Cells.
Development of mechanical, corrosion and electrochemical research devices for
Modelling of degradation phenomena (creep, fracture) and interaction between
material and environment (oxidation, activity build-up, localised corrosion).
Assure safe and economic operation of power and process plants
Contribute to plant life extension and power upgrade assessments
Collate knowledge and experience through participation in national and
international programmes and networks.
References and merits
VTT’s Master Curve base for international FM standards and SI assessment
procedures (ASTM E1921, ASME N-629/631, BS 7910, EN 13445-2 etc.).
VTT experts take actively part in numerous international networks and working
VTT co-ordinates the large
EU NULIFE Network on plant life management.