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  1. Ansatte

Språkvelger

English

Gunnar Härkegård

Last ned pressefoto
Last ned pressefoto
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Gunnar Härkegård

Professor emeritus

gunnar.harkegard@ntnu.no
Verkstedteknisk, 220B, Gløshaugen, Richard Birkelands vei 2
Om Publikasjoner Formidling

Om

CV

 

Leseren henvises til den engelske versjonen av hjemmesiden.

The interested reader is kindly referred to the English version of my home page.

Kompetanseord

  • Dimensjoneringsteknikk
  • Maskindeler
  • Turbomaskiner
  • Utmatting

Publikasjoner

  • Kronologisk
  • Etter kategori
  • Alle publikasjoner i Nasjonalt vitenarkiv (NVA)

2023

  • Härkegård, Gunnar. (2023) Intrinsic-crack modelling of the notch fatigue limit of a solid with an elliptical-cylindrical or a spheroidal cavity. Engineering Fracture Mechanics
    Vitenskapelig artikkel

2021

  • Härkegård, Gunnar. (2021) Critical-distance fatigue analysis of limiting cases of ellipsoidal cavities. Engineering Fracture Mechanics
    Vitenskapelig artikkel

2017

  • Härkegård, Gunnar. (2017) Comparison between different methods for the prediction of the fatigue limit of a member with a small crack. Procedia Structural Integrity
    Vitenskapelig artikkel
  • Klungerbo, Kristine; Härkegård, Gunnar. (2017) Finite element analysis of peak stress and stress gradient at an elliptical through-hole. Journal of Strain Analysis for Engineering Design
    Vitenskapelig artikkel
  • Qvale, Paul; Härkegård, Gunnar. (2017) A simplified method for weakest-link fatigue assessment based on finite element analysis. International Journal of Fatigue
    Vitenskapelig artikkel

2016

  • Härkegård, Gunnar. (2016) Modelling the effect of a spherical cavity on the fatigue limit of a 12% Cr steel. Theoretical and Applied Fracture Mechanics
    Vitenskapelig artikkel
  • Bruun, Øyvind Aleksander; Härkegård, Gunnar. (2016) Erratum: A comparative study of design code criteria for prediction of the fatigue limit under in-phase and out-of-phase tension-torsion cycles (International Journal of Fatigue (2015) 73 (1-16) DOI: 10.1016/j.ijfatigue.2014.10.015). International Journal of Fatigue
    Korrigendum
  • Skallerud, Bjørn Helge; Härkegård, Gunnar; Lotsberg, Inge; Wormsen, Anders. (2016) Preface to the special issue of International Journal of Fatigue on "fatigue at all scales". International Journal of Fatigue
    Leder

2015

  • Bruun, Øyvind Aleksander; Härkegård, Gunnar. (2015) A comparative study of design code criteria for prediction of the fatigue limit under in-phase and out-of-phase tension-torsion cycles. International Journal of Fatigue
    Vitenskapelig artikkel
  • Härkegård, Gunnar. (2015) Short-crack modelling of the effect of corrosion pits on the fatigue limit of 12% Cr steel. Fatigue & Fracture of Engineering Materials & Structures (FFEMS)
    Vitenskapelig artikkel

2014

  • Crawford, B. R.; Loader, C.; Liu, Q.; Harrison, T. J.; Sharp, P. K.; Härkegård, Gunnar. (2014) Experimental and modeling study of the effect of corrosion pitting on fatigue failure locations in aircraft components. Advanced Materials Research
    Vitenskapelig artikkel
  • Wormsen, Anders; Härkegård, Gunnar. (2014) A novel probabilistic fatigue assessment tool and its application to an offshore riser joint. Procedia Materials Science
    Vitenskapelig artikkel

2013

  • Cetin, Ali; Næss, Arvid; Härkegård, Gunnar. (2013) A physically based extreme value characterization of material fatigue. International Journal of Fatigue
    Vitenskapelig artikkel
  • Härkegård, Gunnar; Svensson, Thomas; Zambrano, Habib. (2013) Round-robin prediction of the fatigue limit of a ring of spheroidal graphite cast iron. Fatigue & Fracture of Engineering Materials & Structures (FFEMS)
    Vitenskapelig artikkel
  • Zambrano, Habib; Härkegård, Gunnar. (2013) Self-arresting cracks at notches in ductile cast iron. Engineering Fracture Mechanics
    Vitenskapelig artikkel
  • Cetin, Ali; Härkegård, Gunnar; Næss, Arvid. (2013) The fatigue limit: An analytical solution to a Monte Carlo problem. International Journal of Fatigue
    Vitenskapelig artikkel

2012

  • Härkegård, Gunnar; Marquis, Gary. (2012) Special Issue 'Fatigue Design & Material Defects'. International Journal of Fatigue
    Leder
  • Härkegård, Gunnar. (2012) Dimensjonering av maskindeler. Tapir Akademisk Forlag
    Lærebok
  • Zambrano, Habib; Härkegård, Gunnar; Stärk, Klaus. (2012) Fracture toughness and growth of short and long fatigue cracks in ductile cast iron EN-GJS-400-18-LT. Fatigue & Fracture of Engineering Materials & Structures (FFEMS)
    Vitenskapelig artikkel
  • Shirani, Mehdi; Härkegård, Gunnar. (2012) Damage tolerant design of cast components based on defects detected by 3D X-ray computed tomography. International Journal of Fatigue
    Vitenskapelig artikkel
  • Karlén, Kristoffer; Mårten, Olsson; Ahmadi, Hamidreza; Härkegård, Gunnar. (2012) On the effect of random defects on the fatigue notch factor at different stress ratios. International Journal of Fatigue
    Vitenskapelig artikkel
  • Härkegård, Gunnar; Marquis, Gary. (2012) Guest Editorial, Special Issue ‘Fatigue Design & Material Defects’. International Journal of Fatigue
    Leder

2011

  • Shirani, Mehdi; Harkegård, Gunnar. (2011) Large scale axial fatigue testing of ductile cast iron for heavy section wind turbine components. Engineering Failure Analysis
    Vitenskapelig artikkel
  • Shirani, Mehdi; Harkegård, Gunnar. (2011) Fatigue life distribution and size effect in ductile cast iron for wind turbine components. Engineering Failure Analysis
    Vitenskapelig artikkel
  • Shirani, Mehdi; Härkegård, Gunnar. (2011) Casting defects and fatigue behaviour of ductile cast iron for wind turbine components: A comprehensive study. Materialwissenschaft und Werkstofftechnik
    Vitenskapelig artikkel
  • Härkegård, Gunnar. (2011) International Symposium on Fatigue Design & Material Defects: Book of Abstracts. IPM, NTNU
    Utstillingskatalog

2010

  • Zambrano, Habib; Harkegård, Gunnar. (2010) Self Arresting Fatigue Cracks at Notches in Nodular Cast Iron. Procedia Engineering
    Vitenskapelig artikkel
  • Shirani, Mehdi; Harkegård, Gunnar; Morin, N.. (2010) Fatigue Life Prediction of Components Made of Spheroidal Graphite Cast Iron. Procedia Engineering
    Vitenskapelig artikkel
  • Cetin, Ali; Harkegård, Gunnar. (2010) Fatigue life prediction for large threaded components. Procedia Engineering
    Vitenskapelig artikkel
  • Harkegård, Gunnar; Halleraker, G. (2010) Assessment of methods for prediction of notch and size effects at the fatigue limit based on test data by Bohm and Magin. International Journal of Fatigue
    Vitenskapelig artikkel

2009

  • Shirani, Mehdi; Harkegård, Gunnar. (2009) Fatigue Crack Growth Simulation in Components with Random Defects. Journal of ASTM International
    Vitenskapelig artikkel

2008

  • Fjeldstad, Arne; Wormsen, Anders; Härkegård, Gunnar. (2008) Simulation of fatigue crack growth in components with random defects. Engineering Fracture Mechanics
    Vitenskapelig artikkel
  • Fjeldstad, Arne; Wormsen, Anders; Härkegård, Gunnar. (2008) Approximate stress intensity factors for cracked V-notched specimens based on asymptotic solutions with application to T-joints. Engineering Fracture Mechanics
    Vitenskapelig artikkel
  • Wormsen, Anders; Fjeldstad, Arne; Härkegård, Gunnar. (2008) A post-processor for fatigue crack growth analysis based on a finite element stress field. Computer Methods in Applied Mechanics and Engineering
    Vitenskapelig artikkel

2007

  • Mann, Torsten; Härkegård, Gunnar; Stärk, Klaus. (2007) Short fatigue crack growth in aluminium alloy 6082-T6. International Journal of Fatigue
    Vitenskapelig artikkel
  • Wormsen, Anders; Sjodin, B; Härkegård, Gunnar; Fjeldstad, Arne. (2007) Non-local stress approach for fatigue assessment based on weakest-link theory and statistics of extremes. Fatigue & Fracture of Engineering Materials & Structures (FFEMS)
    Vitenskapelig artikkel
  • Wormsen, Anders; Sjödin, Björn; Härkegård, Gunnar; Fjeldstad, Arne. (2007) Non-local stress approach for fatigue assessment based on weakest-link theory and statistics of extremes. Fatigue & Fracture of Engineering Materials & Structures (FFEMS)
    Vitenskapelig artikkel
  • Wormsen, Anders; Fjeldstad, Arne; Härkegård, Gunnar. (2007) A post-processor for fatigue crack growth analysis based on a finite element stress field. Computer Methods in Applied Mechanics and Engineering
    Vitenskapelig artikkel

2006

  • Tveiten, Bård Wathne; Fjeldstad, Arne; Härkegård, Gunnar; Myhr, Ole Runar; Bjørneklett, Børge. (2006) Fatigue life enhancement of aluminium joints through mechanical and thermal prestressing. International Journal of Fatigue
    Vitenskapelig artikkel
  • Mann, Torsten; Tveiten, Bård Wathne; Harkegård, Gunnar. (2006) Fatigue crack growth analysis of welded aluminium RHS T-joints with manipulated residual stress level. Fatigue & Fracture of Engineering Materials & Structures (FFEMS)
    Vitenskapelig artikkel
  • Mann, Torsten; Härkegård, Gunnar; Tveiten, Bård. (2006) Fatigue assessment methods for welded structures and their application to an aluminium T-joint. Norges teknisk-naturvitenskapelige universitet
    Doktoravhandling
  • Nakajo, Arata; Stiller, Christoph; Harkegård, Gunnar; Bolland, Olav. (2006) Modeling of thermal stresses and probability of survival of tubular SOFC. Journal of Power Sources
    Vitenskapelig artikkel
  • Wormsen, Anders; Fjeldstad, Arne; Härkegård, Gunnar. (2006) The application of asymptotic solutions to a semi-elliptical crack at the root of a notch. Engineering Fracture Mechanics
    Vitenskapelig artikkel

2005

  • Härkegård, Gunnar; Wormsen, Anders. (2005) Non-linear analysis of shallow cracks in smooth and notched plates. Part 1: analytical evaluation. Journal of Strain Analysis for Engineering Design
    Vitenskapelig artikkel
  • Wormsen, Anders; Härkegård, Gunnar. (2005) Non-linear analysis of shallow cracks in smooth and notched plates. Part 2: finite element validation. Journal of Strain Analysis for Engineering Design
    Vitenskapelig artikkel
  • Huth, Hans-Jörg; Härkegård, Gunnar. (2005) Fatigue Design of Hydraulic Turbine Runners. Norges teknisk-naturvitenskapelige universitet
    Doktoravhandling
  • Harkegård, Gunnar; Denk, Josef; Stärk, Klaus. (2005) Growth of naturally initiated fatigue cracks in ferritic gas turbine rotor steels. International Journal of Fatigue
    Vitenskapelig artikkel

2004

  • Harkegård, Gunnar. (2004) Dimensjonering av maskindeler. Tapir Akademisk Forlag
    Lærebok
  • Härkegård, Gunnar. (2004) Evaluation of the Gas Turbine Centre. The Swedish Energy Agency
    Forskningsrapport
  • Huth, Hans-Jörg; Härkegård, Gunnar. (2004) Experimental fatigue testing of standard and shape optimised Francis runner notches. NTNU
    Forskningsrapport

Tidsskriftspublikasjoner

  • Härkegård, Gunnar. (2021) Critical-distance fatigue analysis of limiting cases of ellipsoidal cavities. Engineering Fracture Mechanics
    Vitenskapelig artikkel
  • Crawford, B. R.; Loader, C.; Liu, Q.; Harrison, T. J.; Sharp, P. K.; Härkegård, Gunnar. (2014) Experimental and modeling study of the effect of corrosion pitting on fatigue failure locations in aircraft components. Advanced Materials Research
    Vitenskapelig artikkel
  • Tveiten, Bård Wathne; Fjeldstad, Arne; Härkegård, Gunnar; Myhr, Ole Runar; Bjørneklett, Børge. (2006) Fatigue life enhancement of aluminium joints through mechanical and thermal prestressing. International Journal of Fatigue
    Vitenskapelig artikkel
  • Härkegård, Gunnar; Wormsen, Anders. (2005) Non-linear analysis of shallow cracks in smooth and notched plates. Part 1: analytical evaluation. Journal of Strain Analysis for Engineering Design
    Vitenskapelig artikkel
  • Wormsen, Anders; Härkegård, Gunnar. (2005) Non-linear analysis of shallow cracks in smooth and notched plates. Part 2: finite element validation. Journal of Strain Analysis for Engineering Design
    Vitenskapelig artikkel
  • Zambrano, Habib; Harkegård, Gunnar. (2010) Self Arresting Fatigue Cracks at Notches in Nodular Cast Iron. Procedia Engineering
    Vitenskapelig artikkel
  • Shirani, Mehdi; Harkegård, Gunnar; Morin, N.. (2010) Fatigue Life Prediction of Components Made of Spheroidal Graphite Cast Iron. Procedia Engineering
    Vitenskapelig artikkel
  • Shirani, Mehdi; Harkegård, Gunnar. (2011) Large scale axial fatigue testing of ductile cast iron for heavy section wind turbine components. Engineering Failure Analysis
    Vitenskapelig artikkel
  • Mann, Torsten; Härkegård, Gunnar; Stärk, Klaus. (2007) Short fatigue crack growth in aluminium alloy 6082-T6. International Journal of Fatigue
    Vitenskapelig artikkel
  • Cetin, Ali; Harkegård, Gunnar. (2010) Fatigue life prediction for large threaded components. Procedia Engineering
    Vitenskapelig artikkel
  • Mann, Torsten; Tveiten, Bård Wathne; Harkegård, Gunnar. (2006) Fatigue crack growth analysis of welded aluminium RHS T-joints with manipulated residual stress level. Fatigue & Fracture of Engineering Materials & Structures (FFEMS)
    Vitenskapelig artikkel
  • Härkegård, Gunnar. (2017) Comparison between different methods for the prediction of the fatigue limit of a member with a small crack. Procedia Structural Integrity
    Vitenskapelig artikkel
  • Bruun, Øyvind Aleksander; Härkegård, Gunnar. (2015) A comparative study of design code criteria for prediction of the fatigue limit under in-phase and out-of-phase tension-torsion cycles. International Journal of Fatigue
    Vitenskapelig artikkel
  • Härkegård, Gunnar. (2016) Modelling the effect of a spherical cavity on the fatigue limit of a 12% Cr steel. Theoretical and Applied Fracture Mechanics
    Vitenskapelig artikkel
  • Bruun, Øyvind Aleksander; Härkegård, Gunnar. (2016) Erratum: A comparative study of design code criteria for prediction of the fatigue limit under in-phase and out-of-phase tension-torsion cycles (International Journal of Fatigue (2015) 73 (1-16) DOI: 10.1016/j.ijfatigue.2014.10.015). International Journal of Fatigue
    Korrigendum
  • Shirani, Mehdi; Harkegård, Gunnar. (2009) Fatigue Crack Growth Simulation in Components with Random Defects. Journal of ASTM International
    Vitenskapelig artikkel
  • Härkegård, Gunnar. (2015) Short-crack modelling of the effect of corrosion pits on the fatigue limit of 12% Cr steel. Fatigue & Fracture of Engineering Materials & Structures (FFEMS)
    Vitenskapelig artikkel
  • Wormsen, Anders; Sjodin, B; Härkegård, Gunnar; Fjeldstad, Arne. (2007) Non-local stress approach for fatigue assessment based on weakest-link theory and statistics of extremes. Fatigue & Fracture of Engineering Materials & Structures (FFEMS)
    Vitenskapelig artikkel
  • Cetin, Ali; Næss, Arvid; Härkegård, Gunnar. (2013) A physically based extreme value characterization of material fatigue. International Journal of Fatigue
    Vitenskapelig artikkel
  • Härkegård, Gunnar; Marquis, Gary. (2012) Special Issue 'Fatigue Design & Material Defects'. International Journal of Fatigue
    Leder
  • Härkegård, Gunnar; Svensson, Thomas; Zambrano, Habib. (2013) Round-robin prediction of the fatigue limit of a ring of spheroidal graphite cast iron. Fatigue & Fracture of Engineering Materials & Structures (FFEMS)
    Vitenskapelig artikkel
  • Zambrano, Habib; Härkegård, Gunnar. (2013) Self-arresting cracks at notches in ductile cast iron. Engineering Fracture Mechanics
    Vitenskapelig artikkel
  • Shirani, Mehdi; Harkegård, Gunnar. (2011) Fatigue life distribution and size effect in ductile cast iron for wind turbine components. Engineering Failure Analysis
    Vitenskapelig artikkel
  • Fjeldstad, Arne; Wormsen, Anders; Härkegård, Gunnar. (2008) Simulation of fatigue crack growth in components with random defects. Engineering Fracture Mechanics
    Vitenskapelig artikkel
  • Klungerbo, Kristine; Härkegård, Gunnar. (2017) Finite element analysis of peak stress and stress gradient at an elliptical through-hole. Journal of Strain Analysis for Engineering Design
    Vitenskapelig artikkel
  • Nakajo, Arata; Stiller, Christoph; Harkegård, Gunnar; Bolland, Olav. (2006) Modeling of thermal stresses and probability of survival of tubular SOFC. Journal of Power Sources
    Vitenskapelig artikkel
  • Qvale, Paul; Härkegård, Gunnar. (2017) A simplified method for weakest-link fatigue assessment based on finite element analysis. International Journal of Fatigue
    Vitenskapelig artikkel
  • Cetin, Ali; Härkegård, Gunnar; Næss, Arvid. (2013) The fatigue limit: An analytical solution to a Monte Carlo problem. International Journal of Fatigue
    Vitenskapelig artikkel
  • Shirani, Mehdi; Härkegård, Gunnar. (2011) Casting defects and fatigue behaviour of ductile cast iron for wind turbine components: A comprehensive study. Materialwissenschaft und Werkstofftechnik
    Vitenskapelig artikkel
  • Zambrano, Habib; Härkegård, Gunnar; Stärk, Klaus. (2012) Fracture toughness and growth of short and long fatigue cracks in ductile cast iron EN-GJS-400-18-LT. Fatigue & Fracture of Engineering Materials & Structures (FFEMS)
    Vitenskapelig artikkel
  • Shirani, Mehdi; Härkegård, Gunnar. (2012) Damage tolerant design of cast components based on defects detected by 3D X-ray computed tomography. International Journal of Fatigue
    Vitenskapelig artikkel
  • Karlén, Kristoffer; Mårten, Olsson; Ahmadi, Hamidreza; Härkegård, Gunnar. (2012) On the effect of random defects on the fatigue notch factor at different stress ratios. International Journal of Fatigue
    Vitenskapelig artikkel
  • Skallerud, Bjørn Helge; Härkegård, Gunnar; Lotsberg, Inge; Wormsen, Anders. (2016) Preface to the special issue of International Journal of Fatigue on "fatigue at all scales". International Journal of Fatigue
    Leder
  • Fjeldstad, Arne; Wormsen, Anders; Härkegård, Gunnar. (2008) Approximate stress intensity factors for cracked V-notched specimens based on asymptotic solutions with application to T-joints. Engineering Fracture Mechanics
    Vitenskapelig artikkel
  • Harkegård, Gunnar; Halleraker, G. (2010) Assessment of methods for prediction of notch and size effects at the fatigue limit based on test data by Bohm and Magin. International Journal of Fatigue
    Vitenskapelig artikkel
  • Wormsen, Anders; Fjeldstad, Arne; Härkegård, Gunnar. (2006) The application of asymptotic solutions to a semi-elliptical crack at the root of a notch. Engineering Fracture Mechanics
    Vitenskapelig artikkel
  • Wormsen, Anders; Sjödin, Björn; Härkegård, Gunnar; Fjeldstad, Arne. (2007) Non-local stress approach for fatigue assessment based on weakest-link theory and statistics of extremes. Fatigue & Fracture of Engineering Materials & Structures (FFEMS)
    Vitenskapelig artikkel
  • Wormsen, Anders; Fjeldstad, Arne; Härkegård, Gunnar. (2008) A post-processor for fatigue crack growth analysis based on a finite element stress field. Computer Methods in Applied Mechanics and Engineering
    Vitenskapelig artikkel
  • Wormsen, Anders; Fjeldstad, Arne; Härkegård, Gunnar. (2007) A post-processor for fatigue crack growth analysis based on a finite element stress field. Computer Methods in Applied Mechanics and Engineering
    Vitenskapelig artikkel
  • Härkegård, Gunnar. (2023) Intrinsic-crack modelling of the notch fatigue limit of a solid with an elliptical-cylindrical or a spheroidal cavity. Engineering Fracture Mechanics
    Vitenskapelig artikkel
  • Wormsen, Anders; Härkegård, Gunnar. (2014) A novel probabilistic fatigue assessment tool and its application to an offshore riser joint. Procedia Materials Science
    Vitenskapelig artikkel
  • Harkegård, Gunnar; Denk, Josef; Stärk, Klaus. (2005) Growth of naturally initiated fatigue cracks in ferritic gas turbine rotor steels. International Journal of Fatigue
    Vitenskapelig artikkel
  • Härkegård, Gunnar; Marquis, Gary. (2012) Guest Editorial, Special Issue ‘Fatigue Design & Material Defects’. International Journal of Fatigue
    Leder

Bøker

  • Harkegård, Gunnar. (2004) Dimensjonering av maskindeler. Tapir Akademisk Forlag
    Lærebok
  • Härkegård, Gunnar. (2012) Dimensjonering av maskindeler. Tapir Akademisk Forlag
    Lærebok
  • Härkegård, Gunnar. (2011) International Symposium on Fatigue Design & Material Defects: Book of Abstracts. IPM, NTNU
    Utstillingskatalog

Rapport

  • Härkegård, Gunnar. (2004) Evaluation of the Gas Turbine Centre. The Swedish Energy Agency
    Forskningsrapport
  • Huth, Hans-Jörg; Härkegård, Gunnar. (2004) Experimental fatigue testing of standard and shape optimised Francis runner notches. NTNU
    Forskningsrapport

Studentoppgave eller avhandling

  • Mann, Torsten; Härkegård, Gunnar; Tveiten, Bård. (2006) Fatigue assessment methods for welded structures and their application to an aluminium T-joint. Norges teknisk-naturvitenskapelige universitet
    Doktoravhandling
  • Huth, Hans-Jörg; Härkegård, Gunnar. (2005) Fatigue Design of Hydraulic Turbine Runners. Norges teknisk-naturvitenskapelige universitet
    Doktoravhandling

Formidling

2017

  • Konferanseforedrag
    Härkegård, Gunnar. (2017) Comparison between different methods for the prediction of the fatigue limit of a member with a small crack. 3rd International Symposium on Fatigue Design and Material Defects
  • Konferanseforedrag
    Härkegård, Gunnar. (2017) Short-crack modelling of the fatigue limit of plain and notched members with application to corrosion pits in a 12% Cr steel. Personal invitation by the Institute of Physics of Materials of the Academy of Sciences of the Czech Republic

2014

  • Foredrag
    Härkegård, Gunnar. (2014) Fatigue analysis of notches, defects and cracks. The autumn meeting of the Swedish Fatigue Network
  • Foredrag
    Wormsen, Anders; Härkegård, Gunnar. (2014) A novel probabilistic fatigue assessment tool and its application to an offshore riser joint. 20th European Conference of Fracture
  • Foredrag
    Härkegård, Gunnar. (2014) Short-crack modelling of the effect of corrosion pits on the fatigue limit of a 12% Cr steel. 2nd International Symposium on Fatigue Design & Material Defects

2013

  • Konferanseforedrag
    Cetin, Ali; Härkegård, Gunnar; Næss, Arvid. (2013) The fatigue limit: An analytical solution to a Monte Carlo problem. ICEAF III: 3rd International Conference of Engineering Against Failure
  • Konferanseforedrag
    Härkegård, Gunnar. (2013) Fatigue crack growth threshold modelling of stress raisers with application to corrosion pits. Seminarieserie ved Hållfasthetslära, KTH

2012

  • Konferanseforedrag
    Härkegård, Gunnar. (2012) Fatigue assessment of stress raisers with application to corrosion fatigue. EPRI Expert Workshop “Corrosion-Fatigue Damage and Life Prediction for Steam Turbine Blades”

2011

  • Konferanseforedrag
    Karlén, Kristoffer; Olsson, Mårten; Härkegård, Gunnar. (2011) Comparison between experimentally determined fatigue notch factors and defect-based estimates. International Symposium on Fatigue Design & Material Defects
  • Konferanseforedrag
    Shirani, Mehdi; Härkegård, Gunnar; Mathes, Michael. (2011) Damage tolerant design of cast components based on defects detected by 3D X-ray computed tomography. International Symposium on Fatigue Design & Material Defects
  • Konferanseposter
    Zambrano, Habib; Härkegård, Gunnar; Stärk, Klaus. (2011) Short fatigue crack growth in ductile cast iron. International Symposium on Fatigue Design & Material Defects
  • Konferanseforedrag
    Härkegård, Gunnar. (2011) Novel Methodology for Fatigue Design of Wind Turbine Components of Ductile Cast Iron. Wind Power R&D seminar - Deep sea offshore wind power
  • Konferanseposter
    Härkegård, Gunnar; Cetin, Ali; Shirani, Mehdi; Zambrano, Habib. (2011) A defect-based fatigue design methodology. International Symposium on Fatigue Design & Material Defects

2010

  • Konferanseforedrag
    Shirani, Mehdi; Harkegård, Gunnar. (2010) Fatigue Life Prediction of Components Made of Spheroidal Graphite Iron. 10th International Fatigue Congress
  • Konferanseforedrag
    Zambrano, Habib; Harkegård, Gunnar. (2010) Self-Arresting Fatigue Cracks at Notches in Nodular Cast Iron. 10th International Fatigue Congress
  • Konferanseforedrag
    Cetin, Ali; Harkegård, Gunnar. (2010) Fatigue Life Prediction for Large Threaded Components. 10th International Fatigue Congress
  • Konferanseforedrag
    Harkegård, Gunnar. (2010) Software for fatigue life assessment – Features and challenges. UTMIS Spring Meeting ‘Post-processing of FEA stresses for fatigue assessment’
  • Konferanseforedrag
    Harkegård, Gunnar. (2010) A defect-based fatigue design methodology. Fred Nilsson Seminar
  • Konferanseforedrag
    Harkegård, Gunnar. (2010) A shift from empirical to mechanism-based fatigue design criteria. 10th International Fatigue Congress

2008

  • Konferanseforedrag
    Härkegård, Gunnar. (2008) Fatigue assessment based on weakest-link theory. Seminarier i hållfasthetslära, KTH
  • Konferanseforedrag
    Härkegård, Gunnar. (2008) Fatigue at notches: HCF, LCF, da/dn. Internt symposium, Volvo Aero
  • Konferanseforedrag
    Härkegård, Gunnar. (2008) A post-processor for fatigue-crack growth analysis based on a finite-element stress field and its application to components with random defects. Seminarier i hållfasthetslära, KTH
  • Konferanseforedrag
    Härkegård, Gunnar. (2008) Physically based fatigue life prediction vs. empirical fatigue design – Towards a paradigm shift?. Internt symposium, Scania

2007

  • Konferanseforedrag
    Härkegård, Gunnar. (2007) Utmattingsberegninger av støpte vindturbinkomponenter med hensyn til materialdefekter. Prosjektmøte
  • Konferanseforedrag
    Härkegård, Gunnar. (2007) Probabilistiske utmattingsberegninger av komponenter med materialdefekter. Prosjektmøte
  • Konferanseforedrag
    Härkegård, Gunnar. (2007) Utmatting og materialdefekter i komponenter av støpejern. FeVIND-møte
  • Konferanseforedrag
    Härkegård, Gunnar. (2007) Probabilistiske utmattingsberegninger. Invitert foredrag
  • Konferanseforedrag
    Härkegård, Gunnar. (2007) Utmattingsanalyse av vindmøllekomponenter. Prosjektmøte
  • Konferanseforedrag
    Härkegård, Gunnar. (2007) Spännings- och utmattningsanalys i skön förening. UTMIS nätverksmöte

2006

  • Konferanseforedrag
    Welte, Thomas Michael; Wormsen, Anders; Härkegård, Gunnar. (2006) Influence of Different Operating Patterns on the Life of Francis Turbine Runners. HydroVision 2006
  • Konferanseforedrag
    Mann, Torsten; Härkegård, Gunnar; Stärk, Klaus. (2006) Short fatigue crack growth in aluminium alloy 6082-T6. International Conference on Fatigue Damage of Structural Materials VI
  • Konferanseforedrag
    Fjeldstad, Arne; Härkegård, Gunnar; Wormsen, Anders. (2006) The influence of a stress gradient on the growth of a fatigue crack. 9th international fatigue congress
  • Konferanseforedrag
    Wormsen, Anders; Härkegård, Gunnar. (2006) Weibull fatigue analysis of notched components under constant and variable amplitude loading. 9th International Fatigue Congress
  • Konferanseforedrag
    Wormsen, Anders; Härkegård, Gunnar; Huth, Hans-Jörg. (2006) Probabilistic fatigue assessment of a hydro-turbine blade model. 9th International Fatigue Congress
  • Konferanseforedrag
    Härkegård, Gunnar. (2006) Nye perspektiver i levetidsberegninger av sveiste og usveiste konstruksjoner – Probabilistiske metoder. Materialdagen 2006
  • Konferanseforedrag
    Härkegård, Gunnar. (2006) Prosessbasert utmattingsdimensjonering av stykkstøpte lettmetallkomponenter. Prosjektmøte
  • Konferanseforedrag
    Wormsen, Anders; Härkegård, Gunnar; Fjeldstad, Arne. (2006) P•FAT - the finite-element post-processor. Prosjektmøte
  • Konferanseforedrag
    Härkegård, Gunnar. (2006) Durable light-alloy car components. Invitert foredrag
  • Konferanseforedrag
    Härkegård, Gunnar. (2006) Fatigue-life prediction through post-processing of FEA stress fields. Invitert foredrag

2005

  • Konferanseforedrag
    Wormsen, Anders; Härkegård, Gunnar. (2005) A non-local procedure for the assessment of multiaxial high cycle fatigue failure: computer implementation. Foredrag

2004

  • Konferanseforedrag
    Härkegård, Gunnar. (2004) Utmattingsdimensionering - några personliga reflexioner. UTMIS vårmöte
  • Konferanseforedrag
    Härkegård, Gunnar. (2004) Modellering av kast i aksler. Arbeidsgruppe "Maskinering av aksler"
  • Konferanseforedrag
    Wormsen, Anders; Harkegård, Gunnar. (2004) Incorporating Finite Element Analysis into Component Fatigue Strength, Life and Reliability - Part 1. Probabilistic fatigue design of hydraulic turbine runners
  • Konferanseforedrag
    Mann, Torsten; Tveiten, Bård Wathne; Harkegård, Gunnar. (2004) Fatigue of Welded Aluminium T-joints. The 15th European Conference of Fracture
  • Konferanseforedrag
    Wormsen, Anders; Harkegård, Gunnar. (2004) A Statistical Investigation of Fatigue Behaviour According To Weibull's Weakest-Link Theory. The 15th European Conference of Fracture - Advanced Fracture Mechanics for Life and Safety Assessments
  • Konferanseforedrag
    Wormsen, Anders; Harkegård, Gunnar. (2004) Incorporating Finite Element Analysis into Component Fatigue Strength, Life and Reliability - Part 2. Turbinseminar
  • Konferanseforedrag
    Wormsen, Anders; Harkegård, Gunnar. (2004) Probabilistic Fatigue Assessment. Probabilistic fatigue design of hydraulic turbine runners
  • Konferanseforedrag
    Wormsen, Anders; Harkegård, Gunnar. (2004) A Local Approach for Cracks in Smooth and Notched Components. The 15th European Conference of Fracture - Advanced Fracture Mechanics for Life and Safety Assessment

2000

  • Konferanseforedrag
    Härkegård, Gunnar; Huth, Hans-Jörg; Faanes, Steinar. (2000) FEA-based fatigue assessment methodology for hydraulic turbine runners. Parsons 2000 - Advanced Materials for 21st Century Tubines and Power Plants

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