Research Output per year
Research Output 1998 2020
- 1 - 50 out of 155 results
- Publication Year, Title (ascending)
1998
Fracture analysis of ductile elastic-plastic materials under mixed-mode I-II loading
Laukkanen, A., 1998, RATU2: The Finnish Research Programme on the Structural Integrity of Nuclear Power Plants: Synthesis of achievements 1995-1998. Espoo: VTT Technical Research Centre of Finland, p. 45-75 (VTT Symposium; No. 190).Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review
Open Access
Fracture toughness
Plastics
Copper alloys
Ferritic steel
Steel structures
The effect of asymmetric loading on fracture toughness of metallic materials
Laukkanen, A., 1998, VTT Technical Research Centre of Finland. 318 p. (VTT Publications; No. 362).Research output: Book/Report › Report
Fracture toughness
Ductile fracture
Toughness
Crack propagation
Plastics
1999
Kannettavien kovuusmittarien vertailu
Auerkari, P., Kallio, H., Sirviö, R. & Laukkanen, A., 1999, In : Hitsaustekniikka. 3, p. 35-38Research output: Contribution to journal › Article › Professional
2000
10
Citations
(Scopus)
Damage mechanisms and fracture toughness of GlidCop® CuAl25 IG0 copper alloy
Tähtinen, S., Laukkanen, A. & Singh, B., 2000, In : Journal of Nuclear Materials. 283-287, Part 2, p. 1028 - 1032 5 p.Research output: Contribution to journal › Article › Scientific › peer-review
copper alloys
Copper alloys
toughness
fracture strength
Fracture toughness
Fracture resistance and failure characteristics of AISI 304/SA508 bimetallic weld in ductile regime
Nevasmaa, P., Laukkanen, A. & Ehrnsten, U., 2000, 13th European Conference on Fatique and Fracture - ECFI3. San Sebastian, SP, 6 - 9 Sept. 2000. cd-rom ed. 8 p.Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review
Open Access
Lujien termomekaanisesti valssattujen TM-terästen hitsaus ja ominaisuudet
Brederholm, A., Kiesi, Vilpas, M., Keinänen, H., Laukkanen, A., Nevasmaa, P., Varis, P. & Kotamies, J., 2000, In : Hitsaustekniikka. 50, 2, p. 4-11Research output: Contribution to journal › Article › Professional
3
Citations
(Scopus)
The engineering treatment model and comparison to R6 revision 3
Laukkanen, A., 2000, In : Engineering Fracture Mechanics. 67, 4, p. 365 - 380 16 p.Research output: Contribution to journal › Article › Scientific › peer-review
Cracks
2001
9
Citations
(Scopus)
Analysis of experimental factors in elastic-plastic small specimen mixed-mode I-II fracture mechanical testing
Laukkanen, A., 2001, In : Fatigue & Fracture of Engineering Materials & Structures. 24, 3, p. 193-206 14 p.Research output: Contribution to journal › Article › Scientific › peer-review
Fracture testing
Mechanical testing
Fracture toughness
Plastics
Testing
Calibration of local approach constitutive parameters in the ductile to brittle transition region using WARP3D and WSTRESS
Laukkanen, A., Wallin, K. & Keinänen, H., 2001, Espoo: VTT Technical Research Centre of Finland. 29 p. (VTT Manufacturing Technology. Research Report; No. BVAL64-011092).Research output: Book/Report › Report
Investigations of copper to stainless steel joints
Tähtinen, S., Laukkanen, A. & Singh, B. N., 2001, In : Fusion Engineering and Design. 56-57, p. 391-396 6 p.Research output: Contribution to journal › Article › Scientific › peer-review
Hot isostatic pressing
Copper alloys
Stainless steel
Copper
Alloy steel
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/Report › Report
2002
1
Citation
(Scopus)
A fracture mechanics interpretation of the DNV brittle fracture criteria for ships and mobile offshore units
Wallin, K., Nevasmaa, P. & Laukkanen, A., 2002, In : Fatigue & Fracture of Engineering Materials & Structures. 25, 11, p. 1033-1043Research output: Contribution to journal › Article › Scientific › peer-review
Brittle fracture
Fracture mechanics
Ships
Inspection
Defects
3
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. 1547-1553Research output: Contribution to journal › Article › Scientific › peer-review
Structural integrity (STIN): Recent advances in Master Curve technology
Wallin, K. & Laukkanen, A., 2002, FINNUS: The Finnish Research Programme on Nuclear Power Plant Safety 1999-2002: Final Report. Espoo: VTT Technical Research Centre of Finland, p. 67-72 (VTT Tiedotteita - Research Notes; No. 2164).Research output: Chapter in Book/Report/Conference proceeding › Chapter or book article › Professional
Open Access
Structural integrity
Fracture testing
Brittle fracture
Fracture toughness
Hot Temperature
Structural integrity (STIN): Local approach methods in siulating material failure
Laukkanen, A., Wallin, K. & Keinänen, H., 2002, FINNUS: The Finnish Research Programme on Nuclear Power Plant Safety 1999-2002: Final Report. Espoo: VTT Technical Research Centre of Finland, p. 73-78 (VTT Tiedotteita - Research Notes; No. 2164).Research output: Chapter in Book/Report/Conference proceeding › Chapter or book article › Professional
Open Access
Structural integrity
Mechanics
Temperature
2003
151
Citations
(Scopus)
A model for stresses, crack generation and fracture toughness calculation in scratched TiN-coated steel surfaces
Holmberg, K., Laukkanen, A., Ronkainen, H., Wallin, K. & Varjus, S., 2003, In : Wear. 254, 3-4, p. 278-291 4 p.Research output: Contribution to journal › Article › Scientific › peer-review
Steel
toughness
fracture strength
Fracture toughness
cracks
Rakenteiden keventäminen termomekaanisesti valmistettuja teräksiä käyttämällä (TERMO)
Brederholm, A., Nevasmaa, P., Laukkanen, A., Wallin, K., Nenonen, P., Gripenberg, H., Virkkunen, I., Karppi, R. & Hänninen, H., 2003, In : Hitsaustekniikka. 53, 2, p. 4-13Research output: Contribution to journal › Article › Professional
1
Citation
(Scopus)
Risk informed plant life management - application of the Master-Curve approach for hydrotreating reactors in an oil refinery
Wallin, K., Laukkanen, A. & Nevasmaa, P., 2003, Plant Life Management: Progress for structural integrity. VTT Technical Research Centre of Finland, p. 343-355 (VTT Symposium; No. 227).Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific
Open Access
Fracture mechanics
Hydrogen
Oils
2004
Constitutive modeling of hydrogen cracking
Laukkanen, A. & Nevasmaa, P., 2004, BALTICA VI - Life Management and Maintenance for Power Plants. Vol. 2. Espoo: VTT Technical Research Centre of Finland, p. 419-429 (VTT Symposium; No. 234).Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific
Open Access
Hydrogen
Mechanics
Welds
Residual stresses
Continuum damage mechanics
2
Citations
(Scopus)
Evaluation of weld metal hydrogen cracking risk in a 2.25Cr-1Mo-0.25V-TiB (T24) boiler steel
Nevasmaa, P., Laukkanen, A. & Häkkilä, J., 2004, BALTICA VI - Life Management and Maintenance for P ower Plants. Vol. 2. VTT Technical Research Centre of Finland, p. 393-407 (VTT Symposium; No. 234).Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific
Open Access
Boilers
Welds
Hydrogen
Welding
Steel
32
Citations
(Scopus)
Improved crack growth corrections for J-R-curve testing
Wallin, K. & Laukkanen, A., 2004, In : Engineering Fracture Mechanics. 71, 11, p. 1601 - 1614 14 p.Research output: Contribution to journal › Article › Scientific › peer-review
Crack propagation
Testing
76
Citations
(Scopus)
Master Curve analysis of inhomogeneous ferritic steels
Wallin, K., Nevasmaa, P., Laukkanen, A. & Planman, T., 2004, In : Engineering Fracture Mechanics. 71, 16-17, p. 2329 - 2346 18 p.Research output: Contribution to journal › Article › Scientific › peer-review
Ferritic steel
Steel
Brittle fracture
Heat affected zone
Structural integrity
19
Citations
(Scopus)
Performance of TMCP steel with respect to mechanical properties after cold forming and post-forming heat treatment
Porter, D., Laukkanen, A., Nevasmaa, P., Rahka, K. & Wallin, K., 2004, In : International Journal of Pressure Vessels and Piping. 81, 10-11, p. 867 - 877 11 p.Research output: Contribution to journal › Article › Scientific › peer-review
Steel
Welds
Heat treatment
Mechanical properties
Toughness
1
Citation
(Scopus)
Tribological performance of coated surfaces
Holmberg, K. & Laukkanen, A., 2004, In : Cailiao Rechuli Xuebao/Transactions of Materials and Heat Treatment. 25, 5, p. 20-27 8 p.Research output: Contribution to journal › Article › Scientific › peer-review
coatings
Coatings
plastics
Plastics
sliding contact
2005
4
Citations
(Scopus)
Assessment of hydrogen cracking risk in multipass weld metal of 2.25Cr-1Mo-0.25V-TiB(T24) boiler steel
Nevasmaa, P. & Laukkanen, A., 2005, In : Welding in the World. 49, 7-8, p. 45-58 14 p.Research output: Contribution to journal › Article › Scientific › peer-review
Steel
Boilers
Hydrogen
Welds
Metals
Hitsauksen liitoksen sisältämien paikallisten yli- ja alilujien vyöhykkeiden (Mis-Match) vaikutuksia käsittelevä esiselvitys ilmestynyt
Laukkanen, A. & Nevasmaa, P., 2005, In : Hitsaustekniikka. 55, 4, 22.Research output: Contribution to journal › Article › Professional
15
Citations
(Scopus)
Joint characterisation for repair brazing of superalloys
Heikinheimo, L., Laukkanen, A. & Veivo, J., 2005, In : Welding in the World. 49, 5-6, p. 5 - 12 8 p.Research output: Contribution to journal › Article › Scientific › peer-review
Thermal fatigue
Fatigue testing
Metallography
Weldability
Brazing
35
Citations
(Scopus)
Tribological analysis of fracture conditions in thin surface coatings by 3D FEM modelling and stress simulations
Holmberg, K., Laukkanen, A., Ronkainen, H. & Wallin, K., 2005, In : Tribology International. 38, 11-12, p. 1035-1049 15 p.Research output: Contribution to journal › Article › Scientific › peer-review
cracks
Cracks
sliding
coatings
Finite element method
2006
17
Citations
(Scopus)
Aspects of cleavage fracture initiation: Relative influence of stress and strain
Wallin, K. & Laukkanen, A., 2006, In : Fatigue & Fracture of Engineering Materials & Structures. 29, 9-10, p. 788-798 11 p.Research output: Contribution to journal › Article › Scientific › peer-review
Coated surface design by modelling and simulation
Ronkainen, H., Holmberg, K. & Laukkanen, A., 2006. 13 p.Research output: Contribution to conference › Conference article › Scientific
Coatings
Diamonds
Titanium nitride
Cracks
Carbon
2
Citations
(Scopus)
Tribological analysis of TiN and DLC coated contacts by 3D FEM stress modeling and fracture toughness determination
Holmberg, K., Ronkainen, H., Laukkanen, A., Wallin, K. & Koskinen, J., 2006, Applied Material Research at VTT: Symposium on Applied Materials. VTT Technical Research Centre of Finland, p. 311-328 (VTT Symposium; No. 244).Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific
Open Access
Titanium nitride
Fracture toughness
Diamonds
Finite element method
Coatings
77
Citations
(Scopus)
Tribological contact analysis of a rigid ball sliding on a hard coated surface: Part II: Material deformations, influence of coating thickness and Young's modulus
Holmberg, K., Laukkanen, A., Ronkainen, H., Wallin, K., Varjus, S. & Koskinen, J., 2006, In : Surface and Coatings Technology. 200, 12-13, p. 3810-3823 14 p.Research output: Contribution to journal › Article › Scientific › peer-review
sliding
balls
modulus of elasticity
Elastic moduli
coatings
45
Citations
(Scopus)
Tribological contact analysis of a rigid ball sliding on a hard coated surface: Part III: Fracture toughness calculation and influence of residual stresses
Laukkanen, A., Holmberg, H., Koskinen, J., Ronkainen, H., Wallin, K. & Varjus, S., 2006, In : Surface and Coatings Technology. 200, 12-13, p. 3824-3844 21 p.Research output: Contribution to journal › Article › Scientific › peer-review
fracture strength
residual stress
sliding
balls
Fracture toughness
95
Citations
(Scopus)
Tribological contact analysis of a rigid ball sliding on a hard coated surface. Part I: Modelling stresses and strains
Holmberg, K., Laukkanen, A., Ronkainen, H., Wallin, K., Varjus, S. & Koskinen, J., 2006, In : Surface and Coatings Technology. 200, 12-13, p. 3793-3809 17 p.Research output: Contribution to journal › Article › Scientific › peer-review
sliding
balls
coatings
Coatings
Steel
2007
27
Citations
(Scopus)
Characteristics relevant to ductile failure of bimetallic welds and evaluation of transferability of fracture properties
Laukkanen, A., Nevasmaa, P., Ehrnstén, U. & Rintamaa, R., 2007, In : Nuclear Engineering and Design. 237, 1, p. 1-15Research output: Contribution to journal › Article › Scientific › peer-review
Welds
toughness
cracks
crack
fracture mechanics
Effect of Stress on Ultrasonic Response in Detection and Sizing of Cracks
Pitkänen, J., Laukkanen, A., Kemppainen, M. & Virkkunen, I., 2007, In : Materials Testing. 49, 6, p. 299-309 11 p.Research output: Contribution to journal › Article › Scientific › peer-review
Ultrasonics
Cracks
Inspection
Crack detection
Ultrasonic measurement
121
Citations
(Scopus)
Friction and wear of coated surfaces: Scales, modelling and simulation of tribomechanisms
Holmberg, K., Ronkainen, H., Laukkanen, A. & Wallin, K., 2007, In : Surface and Coatings Technology. 202, 4-7, p. 1034-1049Research output: Contribution to journal › Article › Scientific › peer-review
friction
Wear of materials
Friction
simulation
cracks
29
Citations
(Scopus)
Friction in a coated surface deformed by a sliding sphere
Ronkainen, H., Laukkanen, A. & Holmberg, K., 2007, In : Wear. 263, 7 - 12, p. 1315-1323Research output: Contribution to journal › Article › Scientific › peer-review
sliding
friction
Friction
adhesives
plowing
Three dimensional stress analysis of TiN, DLC and MoS2 coated contacts by 3D FEM modelling
Ronkainen, H., Laukkanen, A. & Holmberg, K., 2007, Proceedings of the European conference on Tribology and Final Conference of COST 532 Action, ECOTRIB 2007: triboscience and tribotechnology. Vizintin, J., Podgornik, B., Holmberg, K., Ciulli, E. & Franek, F. (eds.). p. 181-194 14 p.Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific
4
Citations
(Scopus)
Visualising creep exhaustion in a P22 girth weld
Holmström, S., Laukkanen, A. & Calonius, K., 2007, BALTICA VII - Life Management and Maintenance for Power Plants. Vol. 2. Espoo: VTT Technical Research Centre of Finland, p. 208-221 (VTT Symposium; No. 247).Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific
Open Access
Creep
Welds
Heat affected zone
Ductility
Logistics
2008
Lujien terästen hitsaaminen
Nevasmaa, P., Sirén, M., Karppi, R., Laukkanen, A. & Wallin, K., 2008. 45 p.Research output: Contribution to conference › Other conference contribution › Professional
Modeling and verification of creep strain and exhaustion in a welded steam mixer
Holmström, S., Laukkanen, A., Rantala, J., Kolari, K., Keinänen, H. & Lehtinen, O., 2008, Proceedings : Operations, Applications and Components. American Society of Mechanical Engineers ASME, Vol. 7. p. 505-510Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review
Creep
Steam
ABAQUS
Logistics
Strain rate
32
Citations
(Scopus)
New developments of the Wallin, Saario, Törrönen cleavage fracture model
Wallin, K. & Laukkanen, A., 2008, In : Engineering Fracture Mechanics. 75, 11, p. 3367 - 3377 11 p.Research output: Contribution to journal › Article › Scientific › peer-review
Carbides
Fracture toughness
Mechanical properties
Statistical Models
43
Citations
(Scopus)
Tribological analysis of TiN and DLC coated contacts by 3D FEM modelling and stress simulation
Holmberg, K., Ronkainen, H., Laukkanen, A., Wallin, K., Erdemir, A. & Eryilmaz, O., 2008, In : Wear. 264, 9-10, p. 877-884 8 p.Research output: Contribution to journal › Article › Scientific › peer-review
Diamond
Titanium nitride
titanium nitrides
Diamonds
finite element method
Ultralujan suorakarkaistun ohutlevyteräksen lujuus- ja sitkeysominaisuudet
Nevasmaa, P., Planman, T., Karjalainen-Roikonen, P., Laukkanen, A. & Elers, L., 2008, Espoo: VTT Technical Research Centre of Finland. 31 p. (VTT Tutkimusraportti; No. VTT-R-04160-08).Research output: Book/Report › Report
2009
1
Citation
(Scopus)
Computer modelling and simulation approach to developing wear resistant materials
Holmberg, K., Turunen, E., Ronkainen, H., Laukkanen, A. & Wallin, K., 2009, In : Tribologia. 29, 3-4, p. 38-43Research output: Contribution to journal › Article › Scientific › peer-review
Open Access
Creep strain, damage and life prediction for welded 0.5CMV steel
Rantala, J., Auerkari, P., Holmström, S., Salonen, J., Laukkanen, A., Haapajoki, S., Mäkinen, S., Dean, D. & Spindler, M., 2009, Proceedings of the 2nd ECCC Creep Conference: Creep & Fracture in High Temperature Components - Design & Life Assessment Issues. Shibli, I. A. (ed.). p. 669-680Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review
Effects of defects on low temperature creep of OFP copper
Auerkari, P., Rantala, J., Salonen, J., Laukkanen, A., Holmström, S. & Kinnunen, T., 2009, Proceedings of 2nd ECCC Creep Conference: Creep & Fracture in High Temperature Components - Design & Life Assessment Issues. Shibli, I. A. & Holdsworth, S. R. (eds.). p. 287-297Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review
3
Citations
(Scopus)
Finding critical damage locations by Λ-filtering in finite-element modelling of a girth weld
Holmström, S., Laukkanen, A. & Calonius, K., 2009, In : Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing. 510-511, p. 224-228 5 p.Research output: Contribution to journal › Article › Scientific › peer-review
triaxial stresses
Creep
Welds
damage
steels
Fracture assessment of reactor circuit (FRAS): FRAS summary report
Karjalainen-Roikonen, P., Nevasmaa, P., Calonius, K., Timperi, A., Cronvall, O., Keinänen, H., Laukkanen, A., Elers, L., Valo, M. & Planman, T., 2009, SAFIR2010: The Finnish Research Programme on Nuclear Power Plant Safety 2007-2010 : Interim Report. Espoo: VTT Technical Research Centre of Finland, p. 382-394 (VTT Tiedotteita - Research Notes; No. 2466).Research output: Chapter in Book/Report/Conference proceeding › Chapter or book article › Professional
Open Access
Networks (circuits)
Fracture mechanics
Materials properties
Degradation
Defects