Anssi Laukkanen

19982020
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Research Output 1998 2020

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 proceedingConference article in proceedingsScientificpeer-review

Open Access
Fracture toughness
Plastics
Copper alloys
Ferritic steel
Steel structures
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. 35-38

Research output: Contribution to journalArticleProfessional

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 journalArticleScientificpeer-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 proceedingConference article in proceedingsScientificpeer-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. 4-11

Research output: Contribution to journalArticleProfessional

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 journalArticleScientificpeer-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 journalArticleScientificpeer-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/ReportReport

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 journalArticleScientificpeer-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/ReportReport

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. 1033-1043

Research output: Contribution to journalArticleScientificpeer-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. 1547-1553

Research output: Contribution to journalArticleScientificpeer-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 proceedingChapter or book articleProfessional

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 proceedingChapter or book articleProfessional

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 journalArticleScientificpeer-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. 4-13

Research output: Contribution to journalArticleProfessional

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 proceedingConference article in proceedingsScientific

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 proceedingConference article in proceedingsScientific

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 proceedingConference article in proceedingsScientific

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 journalArticleScientificpeer-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 journalArticleScientificpeer-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 journalArticleScientificpeer-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 journalArticleScientificpeer-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 journalArticleScientificpeer-review

Steel
Boilers
Hydrogen
Welds
Metals
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 journalArticleScientificpeer-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 journalArticleScientificpeer-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 journalArticleScientificpeer-review

Coated surface design by modelling and simulation

Ronkainen, H., Holmberg, K. & Laukkanen, A., 2006. 13 p.

Research output: Contribution to conferenceConference articleScientific

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 proceedingConference article in proceedingsScientific

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 journalArticleScientificpeer-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 journalArticleScientificpeer-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 journalArticleScientificpeer-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. 1-15

Research output: Contribution to journalArticleScientificpeer-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 journalArticleScientificpeer-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. 1034-1049

Research output: Contribution to journalArticleScientificpeer-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. 1315-1323

Research output: Contribution to journalArticleScientificpeer-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 proceedingConference article in proceedingsScientific

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 proceedingConference article in proceedingsScientific

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 conferenceOther conference contributionProfessional

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. 505-510

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

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. 38-43

Research output: Contribution to journalArticleScientificpeer-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. 669-680

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-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. 287-297

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

3 Citations (Scopus)
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 proceedingChapter or book articleProfessional

Open Access
Networks (circuits)
Fracture mechanics
Materials properties
Degradation
Defects