farajian farajian

Dr.-Ing. Majid Farajian

  • GSI Gesellschaft für Schweißtechnik International
    Aachener Straße 172
    40223 Düsseldorf

Lecture

2173571 Welding Technology

Current positions  

  • Head of Design and Construction, GSI, Düsseldorf, Germany
  • Vice-Chairman DVS-FA9 (Construction and Material Strength), Germany
  • Chairman Commission C-XIII of the International Institute of Welding, Joining and Additive Manufacturing (IIW), Genoa, Italy
  • Lead Editor of the International Journal of Materials Joining, Springer Verlag
  • Vice-Chairman Technical Commissions and Member of the Technical Management Board of the IIW, Genoa, Italy
  • Co-organizer and member of the scientific committee MPA Conference 2025, MPA Stuttgart, Germany
  • Member of the scientific committee Fatigue Design 2025, Cetim, Senlis, France

Academic, scientific and management tasks

  • Lecturing on mechanics of materials, design and construction, materials and manufacturing in the fields of:
    • Materials Science and Engineering
    • Durability and Design of light weight components and structures
    • Additive manufacturing, welding, joining and allied processes
  • Supervision of BSc, MSc, and PhD students
  • Manager of research groups at the Fraunhofer Gesellschaft, TU Braunschweig and the GSI
  • Acquisition, Management, financial planning and supervision of basic research projects (DFG, AiF, EU and International)
  • Acquisition, Management, financial planning and supervision of industrial research projects (mechanical and structural Eng., renewable energies and powerplants, Material Digital, Medicine Technologies, automotive, aerospace and railway industries)
  • Organization of International PhD workshops, Summer Schools, Webinars and Seminars
  • Planning and carrying out material and component performance testing and reporting
  • Advising the automotive, railway, aerospace and energy industries in the fields of:
    • Mechanical and structural engineering
    • Design of durable light weight components and structures
    • Assessment of the structural integrity of safety relevant parts
  • Evaluation of project proposals (DFG, AiF, EU and International) as Peer-Reviewer
  • Evaluation and managing the applications for the Best Paper Awards and Scientific Prizes as Chairman of the Boards of the Peer-Reviewers at the IIW
  • Certified coach for project management and building of high energy teams

Professional Experience

  • Since 2020: Head of the Department Design and Construction
    GSI Gesellschaft für Schweißtechnik International
    Düsseldorf, Germany
  • Since 2013: Associate Lecturer
    Karlsruhe Institute of Technology KIT
    Karlsruhe, Germany
  • 2013-2020: Team and Group Leader Fatigue & Head of the competence field “Joined and additively Manufactured Components and Structures”
    Fraunhofer Institute for Mechanics of Materials IWM
    Freiburg, Germany
  • 2007-2013: Scientific Assistant and Lecturer Light Weight Design of Components and Structures & Group Leader Simulation and Calculation
    Institute for Joining and Welding
    TU Braunschweig, Germany
  • 2004-2007: Scientific Assistant and Lecturer Light Weight Durable Structures
    Royal Institute of Technology (KTH)
    Stockholm, Sweden

Academic Education

  • 2011 - 2013: Post-Doc. in Mechanical Engineering, Technical University of Braunschweig, Germany
    Topic: Multiaxial Fatigue and Residual Stresses Behavior in Welds
    A project of the German Research Foundation (DFG)
  • 2007 - 2011: Ph.D. in Mechanical Engineering, Technical University of Braunschweig, Germany
    Dissertation: Stability and Relaxation of Welding Residual Stresses
    A Project of the German Research Foundation (DFG)
  • 2001 - 2004: M.Sc. in Materials Processing, Royal Institute of Technology, KTH, Stockholm, Sweden
    Master's thesis: Fatigue Performance of Light Weight Durable Structures
    A Project of the Volvo Group

Main teaching fields in universities

  • Statics and Strength of Materials
  • Mechanics of Materials
  • Mechanical Design of Machine Parts
  • Light Weight Design
  • Fatigue and Fracture Mechanics
  • Structural integrity of light weight components and structures
  • Manufacturing Technologies

Main research fields

  • Materials Science and Engineering
  • Structural integrity of light weight components and structures
  • Multiaxial fatigue
  • Residual stresses and surface integrity
  • Additive Manufacturing, Joining, welding and allied processes
  • Damage and fracture mechanics
  • Surface engineering for durable and sustainable components and structures
  • Material testing and characterization
  • Implementation of material models in finite element programs
  • Development of damage models for plasticity and fatigue
  • Testing of components and structures


Further qualifications

  • European Welding Engineer, Royal Institute of Technology, Stockholm, Sweden, 2002
  • International Welding Engineer, Royal Institute of Technology, Stockholm, Sweden, 2002

Published book chapters

  1. K. Hemessi; M. Farajian, Chapter: Numerical Welding Simulation as a Basis for Structural Integrity Assessment of Structures: Microstructure and Residual Stresses, Book: Residual Stress Analysis on Welded Joints by Means of Numerical Simulation and Experiments, http://dx.doi.org/10.5772/intechopen.74466, 2018
  2. M. Farajian, D. Siegele, Chapter: Welding Residual Stresses, The Encyclopedia of Iron, Steel, and Their Alloys, Taylor & Francis Group, pp. 3767 -3793, DOI: 10.1081/E-EISA-120049862, 2016
  3. M. Farajian, Th. Nitschke-Pagel, R. C. Wimpory, M. Hofmann, Chapter: Determination of the Welding Residual Stress Field be Diffraction Methods, Book: In-Situ Studies with Photons, Neutrons and Electrons Scattering, Springer, pp. 177-200, DOI 10.1007/978-3-319-06145-0, 2014

Journal papers

  1. S. Gkatzogiannis, J. Schubnell, M. Farajian et al. Estimating the fatigue strength of HFMI-treated weldments by means of numerical analyses, Journal of Constructional Steel Research, Volume 218, 2024
  2. J. Schubnell, M. Farajian et al. Fatigue performance of repair-welded and HFMI-treated transverse stiffeners, International Journal of Materials Joining, Welding in the World, Volume 69, pp. 199-211, 2024
  3. J. Schubnell, A. Müller, R. Boywitt, O. Maiß, M. Farajian, Fatigue life improvement of similar and dissimilar aluminum friction stir welds by deep rolling, International Journal of Materials Joining, Welding in the World, Volume 67, pp. 721-732, 2023
  4. K. Hemmesi, F. Ellmer, M. Farajian, I. Varfolomeev, M. Luke, On the evaluation of overload effects on the fatigue strength of metallic materials, Procedia Structural Integrity, 38, 241, pp. 401-410, 2022
  5. A. Sarmast, J. Schubnell, M. Farajian, Finite element simulation of multi-layer repair welding and experimental investigation of the residual stress fields in steel welded components, International Journal of Materials Joining, Volume 66, pp. 1275-1290, 2022
  6. K. Hemmesi, H. Holey, A. Elmoghazy, R. Böhm, M. Farajian, V. Schulze, Modelling and Experimental Validation of Material Deformation at Different Zones of Welded Structural-Steel under Multiaxial Loading, Materials Science and Engineering: A, Volume 824, 2021
  7. J. Schubnell, P. Ladendorf, A. Sarmast, M. Farajian, P. Knödel, Fatigue Performance of High- and Low-Strength Repaired Welded Steel Joints, Metals, 11, 293, https://doi.org/10.3390/met11020293, 2021
  8. S. Gkatzogiannis, J. Schubnell, P. Knödel, M. Farajian, T. Ummenhofer, M. Luke, Investigating the Fatigue Behaviour of Small Scale and Real Size HFMI-Treated Components of High Strength Steels, Engineering Failure Analysis, Volume 123, https://doi.org/10.1016/j.engfailanal.2021.105300, 2021
  9. J. Schubnell, M. Farajian, Fatigue improvement of aluminium welds by means of deep rolling and diamond burnishing, International Journal of Materials Joining, Volume 66, pp. 699-708, 2021
  10. M. Leitner, M. Stoschka, Z. Barsoum, M. Farajian, Validation of the fatigue strength assessment of HFMI-treated steel joints under variable amplitude loading, International Journal of Materials Joining, Volume 64, pp. 1681-1689, 2020
  11. J. Schubnell, P. Pontner, R:C. Wimpory, M. Farajian, V. Schulze, The Influence of Work Hardening and Residual Stresses on the Fatigue Behavior of High Frequency Mechanical Impact Treated Surface Layers, International Journal of Fatigue, Volume 134, https://doi.org/10.1016/j.ijfatigue.2019.105450, 2020
  12. S. Nagel, T. Ummenhofer, I. Veile, R. Tschuncky, M. Jung, M. Farajian, Berücksichtigung prozessbedingter Ungänzen in der Bauteilbemessung, Giesserei, Ausgabe 12, pp. 32-43, 2020
  13. J. Schubnell, C. Eichheimer, C. Ernould, M. Farajian, A. Maciolek, J. R. Kornmeier, The Influence of Coverage for High Frequency Mechanical Impact Treatment of different Steel Grades, Journal of Materials Processing Technology, Volume 277, https://doi.org/10.1016/j.jmatprotec.2019.116437, 2020
  14. E. Javaheri, K. Hemmesi, P. Tempel, M. Farajian, Fatigue assessment of the welded joints containing process relevant imperfections, International Journal of Materials Joining, 63, PP. 249–261 2019
  15. J. Schubnell, D. Discher, M. Farajian, Determination of the static, dynamic and cyclic properties of the heat affected zone for different steel grades, Materials Testing, https://doi.org/10.3139/120.111367, 2019
  16. C. Ernould, J. Schubnell, M. Farajian, A. Maciolek, D. Simunek, M. Leitner, M. Stoschka, Application of different simulation approaches to numerically optimize high-frequency mechanical impact (HFMI) post-treatment process, International Journal of Materials Joining, Volume 63, PP. 725-738, 2019
  17. J. Schubnell, M. Jung, C. Hieu Le, M. Farajian et al, Influence of the optical measurement technique and evaluation approach on the determination of local weld geometry parameters for different weld types, Intrenational Journal of Materials Joining, Volume 64, pp. 301-316, 2019
  18. M. Leitner, Y. Murakami, M. Farajian, H. Remmes, M. Stoschka, Fatigue Strength Assessment of Welded Mild Steel Joints Containing Bulk Imperfections, Metals, 8, 5, 306, https://doi.org/10.3390/met8050306, 2018.
  19. J. Schubnell, M. Farajian, T. Däuwel, Y. Shin, Numerical Fatigue life analysis of a High Frequency Mechanical Impact treated industrial component based on Damage Mechanics models, Materialwissenschaft und Werkstofftechnik, 2018
  20. C. Beckmann, J. Preußner, T. Kennerknecht, M. Farajian et al, Mikrostrukturbasierte Beschreibung: Rissentstehung in Schweißverbindungen/Novel Microstructural Based Description: Crack Formation in Welded Joints, Konstruktion 70(03):64-69, 10.37544/0720-5953-2018-03-64, 2018
  21. M. Farajian, V. Hardenacke, W. Pfeiffer, M. Klaus, J. R. Kornmeier, Numerical and Experimental Investigations on Shot Peened High Strength Steel by means of Hole Drilling, X-ray, Synchrotron and Neutron Diffraction Analysis, Materials Testing, 59, 2, Carl Hanser Verlag, pp. 161-165, 2017
  22. C. Beckmann, T. Kennerknecht, J. Preußner, M. Farajian et al, Micromechanical investigation and numerical simulation of fatigue crack formation in welded joints, Engineering Fracture Mechanics, DOI: 10.1016/j.engfracmech.2017.08.008, 2017
  23. J. Schubnell, V. Hardenacke, M. Farajian, Strain-based critical plane approach to predict the fatigue life of High Frequency Mechanical Impact treated welded joints depending on the material condition, International Journal of Materials Joining, 2017
  24. K. Hemmesi, M. Farajian, A. Fatemi, Application of the Critical Plane Approach to the Torsional Fatigue Assessment of Welds Considering the Effect of Residual Stresses, International Journal of Fatigue, doi: http://dx.doi.org/10.1016/j.ijfatigue.2017.01.023, 2017
  25. J. Hohe, C. Beckmann, T. Kennerknecht, J. Preußner, M. Farajian, M. Luke, Experimental investigation and numerical simulation of fatigue crack formation in polycrystalline materials, Proceedings in Applied Mathematics and Mechanics, PAMM, DOI: 10.1002/pamm.201710092, 2017
  26. k. Hemmesi, M. Farajian, M. Boin, Numerical Studies of Welding Residual Stress Field in Tubular Joints and the related Experimental Investigations by means of X-ray and Neutron Diffraction Analysis, Materials and Design, http://doi.org/10.1016/j.matdes.2017.03.088, vol. 126, pp 339-350, 2017
  27. K. Hemmesi, M. Farajian, D. Siegele, Numerical and experimental description of the welding residual stress field in tubular joints for fatigue assessment, International Journal of Materials Joining, Volume 60, Issue 4, pp 741-748, 2016
  28. J. Schubnell, V. Hardenacke, M. Farajian, High frequency mechanical impact treatment (HFMI) for the fatigue improvement: numerical and experimental investigations to describe the condition in the surface layer, International Journal of Materials Joining, Volume 60, Issue 4, pp 749-755, 2016
  29. C. Beckmann, M. Farajian, D. Siegele, J. Höhe, Modelling and Simulation of Fatigue Crack Initiation in Metallic Joints Based on Crystal Plasticity, Letters in Applied NanoBioSceince, Volume 5, pp. 354-357, 2016
  30. M. Farajian, Th. Nitschke-Pagel, Residual stress relaxation in welded large components, Materials Testing, 57(9):750-754 · September 2015
  31. M. Farajian, Th. Nitschke-Pagel, D. Siegele, Welding Residual Stress behavior in Tubular Steel Joints under Multiaxial Loading, HTM Journal of Heat Treatment and Materials, 1, 2014, Volume 69, pp. 6-13.
  32. M. Farajian, Z. Barsoum, A. Kromm, Residual Stress Engineering in Fatigue Resistant Welds, Materials Science Forum Vols. 768-769, 2014, pp. 613-619
  33. M. Farajian, Th. Nitschke-Pagel, K. Dilger, Welding Residual Stresses in Tubular Joints, Materials Science Forum Vols. 768-769, pp. 605-612, 2014
  34. K. Hemmesi, M. Farajian, D. Siegele, Numerical Investigation of Welding Residual Stress Field and its Behavior under Multiaxial Loading in Tubular Joints, Advanced Materials Research, vol. 996, pp 788-793, 2014
  35. M. Farajian, Welding Residual Stress Behaviour under Mechanical Loading, International Journal of Materials Joining, Welding in the World, Volume 57, Issue 2, pp 157-169, 2013
  36. M. Farajian, Th. Nitschke-Pagel, K. Dilger, Relaxation of Welding Residual Stresses under Quasi-static Loading, International Journal of Microstructure and Material Properties, Vol.7, No.1, 2012
  37. M. Farajian, Th. Nitschke-Pagel, K. Dilger, Relaxation of Welding Residual Stresses under Cyclic Loading, International Journal of Microstructure and Material Properties, Vol.7, No.1, 2012
  38. M. Farajian, Th. Nitschke-Pagel, Robert C. Wimpory, Michael Hofmann, Manuela Klaus, Residual Stress Field Measurements in Welds by Means of X-ray, Synchrotron and Neutron Diffraction, Journal of Materials Science and Engineering Technology, Vol. 42, No. 11, pp. 996-1001, 2011
  39. M. Farajian, Th. Nitschke-Pagel, K. Dilger, Stability and Relaxation of Welding Residual Stresses, Materials Science Forum, Vol. 681, pp. 55-60, 2011
  40. M. Farajian, Robert C. Wimpory, Th. Nitschke-Pagel, Relaxation and Stability of Welding Residual Stresses in High Strength Steel under Mechanical Loading, Journal of Steel Research International, 81, No.12, pp. 1137-1143, 2010
  41. M. Farajian, Th. Nitschke-Pagel, K. Dilger, Residual Stress Relaxation of Quasi-statically and  Cyclically Loaded Welding High Strength Steels, International Journal of Materials Joining, Welding in the World, International Institute of Welding , Vol. 54, No.  1/2, pp. 49-60, 2010
  42. M. Farajian, Th. Nitschke-Pagel, K. Dilger, Mechanisms of Residual Stress Relaxation and Redistribution in Welded High Strength Steel Specimens under Mechanical Loading, International Journal of Materials Joining, Welding in the World, Vol. 54, No. 11/12, pp. 366-374, 2010
  43. M. Farajian, N. Jarvstråt, A fractographical investigation of weld toe imperfections in Tandem GMA welding, Journal of Steel Research International, 77, pp. 889- 895, 2006

Conference Papers

  1. J. Schubnell, S. Fliegener, M. Farajian, Further enhancing fatigue properties with HFMI by customized edge treatment, 14th International Conference of Shot Peening, 2022
  2. J. Schubnell, J. Preußner, M. Farajian, Decreasing and increasing the value of the compressive residual stresses induced by high frequency mechanical impact treatment during cyclic loading, ICRS 11 – The 11th International Conference on Residual Stresses, Nancy, France, 2022
  3. J. Schubnell, T. Hanji, K. Tateishi, S. Gkatsogiannis, T. Ummenhofer, M. Farajian, Quantifying the Intensity of High Frequency Mechanical Impact treatment, 75th International Conference of the International Institute of Welding (IIW), Tokyo, 2022
  4. M. Farajian, J. Schubnell, T. Ummenhofer, S. Gkatzigiannis, Hochfrequenz-Hämmerverfahren (HFMI) -Rechnergestütztes Bewertungskonzept zum Nachweis der Lebensdauerverlängerung an behandelten Schweißverbindungen aus hochfesten Stählen, DVS Congress 2020
  5. M. Farajian, J. Föhrenbach, V. Hardenacke, Fatigue Life Calculation of High Frequency Mechanical Treated Welded Joints by Means of Numerical Process Simulation and Critical Plane Approaches, International Institute of Welding, XIII-Fatigue Commission, Melbourne, Australia, 2016
  6. D. Siegele, P. Tempel, M. Farajian, On the influence of weld porosity on fatigue strength, 10th International Conference on Trends in Welding Research, Tokyo, Japan, S22-2, pp. 424-427, 2016
  7. D. Siegele, M. Farajian, K. Hemmesi, Welding Residual Stress Modeling and Experimental Validation, invited talk,10th Int. Conference on Trends in Welding Research, Tokyo, Japan, pp. 507-510, 2016
  8. M. Farajian, R. Fenzl,  Quantification of the influence of the weld quality on the fatigue of welded joints, International Institute of Welding, XIII-Fatigue Commission, Helsinki, Finland, 2015
  9. K. Hemmesi, M. Farajian, D. Siegele, Numerical Investigation of Welding Residual Stress Field and its Behaviour under Multiaxial Loading in Tubular Joints, ECRS-9, Troyes, France, 07-10 Juli, 2014
  10. M. Farajian, W. Pfeiffer, D. Siegele, Residual Stresses in Tubular Joints in as welded and deep rolled conditions, ECRS-9, Troyes, France, 07-10 Juli, 2014
  11. M. Farajian, Th. Nitschke-Pagel, M. Boin, R. C. Wimpory, Relaxation of Welding Residual Stresses in Tubular Joints under Multiaxial Loading, 10th International Conference on Multiaxial Fatigue & Fracture (ICMFF10), Kyoto, Japan, 3-6 June, 2013
  12. M. Farajian, Th. Nitschke-Pagel, K. Dilger, Welding Residual Stresses in Tubular Joints, 9th International Conference on Residual Stresses in Garmisch-Partenkirchen, October 7-9, 2012
  13. M. Farajian, Th. Nitschke-Pagel, Henri-Paul Lieurade, Shot Peening as a tool for fatigue strength improvement of welds: a review, XIII – WG6 - 009 – 12, IIW Annual Assembly, Denver, USA, 09-13 July, 2012
  14. M. Farajian, Z. Barsoum, I. Weich, Th. Nitschke-Pagel, A Literature Survey on Residual Stress Related Fatigue Strength Improvement Techniques for Welded Components and Structures, XIII – WG6 - 008 – 12, IIW Annual Assembly, Denver, USA, 09-13July, 2012
  15. M. Farajian, Th. Nitschke-Pagel, K. Dilger, Residual Stress Relaxation in Welded Large Scale Components, IIW-Document, XIII-2342-10, IIW Annual Assembly, Istanbul, Turkey, 2010
  16. M. Farajian, Th. Nitschke-Pagel, K. Dilger, Residual Stress Relaxation in Welded Joints under Static and Cyclic Loading, International Centre for Diffraction Data, Denver, USA, ISSN 1097-0002, pp. 585-592, 2009
  17. M. Farajian, N. Jarvstråt, B. Jonsson, Surface Geometry Measurements and the Experimental and Numerical Investigation of Stress Concentration in Fillet Welds, IIW- Document, XIII-2142-06, International Institute of Welding, Quebec City, Canada, 2006
  18. M. Farajian, N. Jarvstråt, M. Thuvander, Effect of Welding Parameters on Formation of Toe Imperfections in Tandem Gas Metal Arc Welding, ASM: Trends in Welding Research Conference, Pine Mountain, USA, 2005