prof. Ing. Milan Forejt, CSc.
E-mail:   forejt@fme.vutbr.cz 
Dept.:   Institute of Manufacturing Technology
Dept. of Metal Forming and Plastics
Position:   Professor
Room:   A1/1625

Education and academic qualification

  • Education and academic qualification
  • 1965 graduated from the Aircraft Faculty of Military Academy in Brno
  • 1977 awarded the PhD degree at the Department of Manufacturing Technologies of
  • FME BUT, PhD thesis on Optimization of Service Life of Compound Dies
  • 1982 acquired position of senior researcher (IA – 2a)
  • 1987 post-graduate studies in “Technical expertise in transport, engineering and economy”
  • 1988 appointed expert witness by the minister of justice
  • 1990 appointed Associate Professor, as of June 1, 1990
  • 1993 habilitated Associate Professor, as of January 1, 1993
  • 1998 appointed Professor in Forming theory and technology, as of June 1, 1998

Career overview

  • Job history
  • 1965 – 1970 assistant and assistant professor at the Military Academy in Brno
  • 1971 – till the present: at the Faculty of Mechanical Engineering, Brno University of Technology, Department of Manufacturing Technology
  • 1971 – 1975 technical worker
  • 1976 senior technical worker
  • 1983 senior research worker
  • 1989 assistant professor
  • 1990 associate professor of Forming theory and technology
  • 1993 habilitated associate professor of Forming theory and technology
  • 1998 – till the present: professor of Forming theory and technology

Pedagogic activities

  • Teaching activities
  • Giving lectures and leading exercises in the courses: Theory of metal forming-HTA, HTA-K, GTA, Experimental methods-HE1, HE2, Technology WTE of and selected chapters from metal forming-HVT, WT1. Methodological guidance, lectures and consultations in design courses, end-of-year projects-DR2, diploma projects-HD3, HD5, supervision of end-of-year and diploma projects.
  • Member of the National board of examiners for the field of Engineering technology, chairman of the board of examiners for final BSc examinations in the field of Engineering technology.
  • Supervisor of doctoral students in the fields of Engineering technology and Forensic engineering.

Scientific activities

  • Research activities
  • Mathematical representation of forming processes, stress and strain analysis in the dimensioning of forming tools, employing elastic and elastic-plastic FEM programs and simulation programs for large plastic deformations. Modelling of the mechanical properties of materials formed at real strain rates, with outcomes for constitutive equations of mathematical representation of formed materials.
  • Experimental examination of loading, and stress and strain analysis of metal-forming tools.

Non-University activities

  • Activities outside the university
  • CSNMT – Czech Society for New Materials and Technologies (member of supervisory board)
  • EVU – European society for research and analysis of accidents, national chapter V CZ (member)
  • Technical guarantor of symposium B – metal forming, of the International conference on metallurgy and materials – METAL 2004, 2005, 2006.
  • Member of the international scientific committee of the conference "Advanced engineering technologies and materials – PRO-TECH-MA 2002, 2004, 2006".

Projects

  • Projects
  • In the years 1993 and 1994 in cooperation with the Institute of Materials Physics of the Czech Academy of Sciences the responsible researcher of the Ministry of Education transformation project 332/1993/1994 VSAV of the Education Development program (based on decision No 135/24.3.1993 of the government of the Czech Republic) entitled “High-rate deformations in the teaching of metal and alloy forming”. The subject matter of the project has since 1995 been included in the teaching of a newly introduced course “Selected chapters from metal forming” in the 5th year of specialized studies.
  • In the years 1995 and 1996 the responsible researcher of grant project No FP953663 of the Science Fund of the FME BUT, entitled “Optimization of composite forming tools”.
  • In the years 1996 and 1997 joint applicant in the successfully concluded grant project FU360064 (applicant Dr. J. Krejčí) of the Science and Arts Fund, entitled “Constitutive equations of metallic and ceramic materials at high deformation rates”.
  • In the year 1997 responsible researcher of grant project No FP379725 of the Science Fund of the FME BUT, entitled “Development of lightened carrier for dynamic material testing using the Taylor test”.
  • In the years 1999 to 2001responsible researcher of GAČR project No 101/99/0373 “Modelling of steel behaviour during forming”, which was conceived in support of completing the laboratory of high-rate deformations and developing its utilization at the Institute of Manufacturing Technology of FME, Department of Metal Forming.
  • In the years 1999 to 2004 joint researcher of the Ministry of Education Research Plan No 262100003, “Development of advanced high-precision engineering technologies”, the section “Creating a database of materials models for the prediction of materials behaviour in the forming process”.
  • In 2010, co-investigator of a successful standard project FSI-S-10-81(i.č.441)Tackling molding parts of pipes.

  • In 2011, co-investigator of a standard project FSI-S-11-23 (i.č.1390) using progressive technology in the production of solar panels heat transfer.

  • In 2012-14 Investigator standard project FSI-S-12-5 (i.č.1664). Advanced solar absorber with a textured surface and controlled circulation.

Sum of citations (without self-citations) indexed within SCOPUS

11

Sum of citations (without self-citations) indexed within ISI Web of Knowledge

7

Sum of other citations (without self-citations)

22

Supervised courses:

Publications:

  • ŠLAIS, M.; FOREJT, M.; DOHNAL, I.:
    Verification of measurement of dynamic loading during the Taylor anvil test , MM Science Journal
    journal article in Scopus
  • DOHNAL, I.; ŠLAIS, M.; FOREJT, M.; MRŇA, L.:
    Hopkinson Tensile Tests of Flat Specimens.,
    Journal of Mechanics Engineering and Automation, Vol.3, (2013), No.9, pp.560-565, ISSN 2159-5275
    journal article - other
  • DOHNAL, I.; ŠLAIS, M.; FOREJT, M.:
    CAPACITANCE DETECTORS USED FOR SPLIT HOPKINSON PRESSURE BAR TEST (SHPBT) AND THEIR COMPARISON WITH NUMERIC SIMULATION SHPBT,
    METAL 2013, pp.1-6, ISBN 978-80-87294-39-0, (2013)
    conference paper
    akce: METAL 2013: 22nd International Conference on Metallurgy and Materials, Brno, 15.05.2013-17.05.2013
  • TROJANOVÁ, Z.; PODRÁBSKÝ, T.; LUKÁČ, P.; ARMSTRONG, R.; PEŠIČKA, J.; FOREJT, M.:
    Influence of strain rate on deformation mechanisms of an AZ31 magnesium alloy,
    International Journal of Materials Research, Vol.2013, (2013), No.104, pp.762-768, ISSN 1862-5282, Carl Hanser Verlag GmbH & Co.KG
    journal article - other
  • ŠLAIS, M.; DOHNAL, I.; FOREJT, M.:
    Determination of Johnson-Cook equation parameters,
    Acta Metallurgica Slovaca, Vol.2012, (2012), No.3, pp.125-132, ISSN 1335-1532
    journal article - other
  • ŠLAIS, M.; DOHNAL, I.; FOREJT, M.; ŠVEC, P.:
    Měření rázové síly při TAT,
    Kovárenství, Vol.2012, (2012), No.44, pp.73-76, ISSN 1213-9289, Svaz kováren České republiky
    journal article - other
  • MRŇA, L.; FOREJT, M.; LIDMILA, Z.; PODANÝ, K.; KUBÍČEK, J.:
    Manufacturing of solar absorber by unconventional methods,
    Metal 2012, pp.1-6, ISBN 978-80-87294-29-1, (2012)
    conference paper
    akce: METAL 2012: 21st International Conference on Metallurgy and Materials, Brno, 23.05.2012-25.05.2012
  • ŠLAIS, M.; FOREJT, M.:
    Study of dynamic behaviour of Ti-6Al-4V titanum alloy,
    Steel Research International, pp.693-697, ISBN 978-3-514-00754-3, (2008), Verlag Stahleisen GnBH
    conference paper
    akce: 12th International Conference on Metal Forming 2008, Kraków, 21.09.2008-24.09.2008

List of publications at Portal BUT

Abstracts of most important papers:

  • JOPEK, M.; FOREJT, M.; HARANT, M.:
    Mechanical properties of aluminium alloys at high strain rate, MM SCIENCE
    journal article in Web of Science
    The split Hopkinson's pressure bar test is a part of a group of testing methods used to determine dynamic behavior of various materials in an interval of strain rate from 100 s(-1) to 10(3) s(-1). The article describes the practical application of the testing method for aluminum alloy EN AW 6082. This alloy is used for colde-xtruded parts (components of car airbags). Since the strain rate of cold forming technologies reaches up to 1000 s(-1), it is necessary to determine the material ' s behavior at these strain rate values.
  • ŠLAIS, M.; FOREJT, M.; DOHNAL, I.:
    Verification of measurement of dynamic loading during the Taylor anvil test , MM Science Journal
    journal article in Scopus
    The Taylor Anvil test is used to estimate dynamic behaviour of materials in an interval of strain rates of 100 to 10000 per second. The specimen is deformed due to impact on a rigid target instrumented with detectors. This measuring set provides an advantage in finding the forming force, which acted during the deformation. A Charpy hammer of nominal energy of 50J was used for the verification of dynamic loading induced by impact of a specimen. This measuring set is placed in the Laboratory of high strain rates at FME Brno, Institute of Manufacturing Technology, Department of Metal Forming and Plastics. The experiment arrangement allows comparing the results obtained independents by strain gauges and piezoelectric sensors.
  • DOHNAL, I.; ŠLAIS, M.; FOREJT, M.:
    CAPACITANCE DETECTORS USED FOR SPLIT HOPKINSON PRESSURE BAR TEST (SHPBT) AND THEIR COMPARISON WITH NUMERIC SIMULATION SHPBT,
    METAL 2013, pp.1-6, ISBN 978-80-87294-39-0, (2013)
    conference paper
    akce: METAL 2013: 22nd International Conference on Metallurgy and Materials, Brno, 15.05.2013-17.05.2013
    The Split Hopkinson Pressure Bar Test (SHPBT) is used for the determination of mechanical material properties at high strain rates, in this case within 102 to 103s-1. The principle of SHPBT is based on the measurement and evaluation of impact loading that is common in high strain rate processes. Strain gauges are usually used to record impact loading. This paper deals with recording the impact wave using capacitance detectors. SHPBT is a high strain rate test where the compression loading affects a specimen placed between two bars. The duration of impact loading is within the range of 40 to 100 microseconds. The verification of these detectors was performed by comparing an SHPBT experiment and its numerical simulation. The ANSYS LS Dyna 3D software was used for the numerical simulation. AA 5083 aluminium alloy was the material used for the experiment.
  • TROJANOVÁ, Z.; PODRÁBSKÝ, T.; LUKÁČ, P.; ARMSTRONG, R.; PEŠIČKA, J.; FOREJT, M.:
    Influence of strain rate on deformation mechanisms of an AZ31 magnesium alloy,
    International Journal of Materials Research, Vol.2013, (2013), No.104, pp.762-768, ISSN 1862-5282, Carl Hanser Verlag GmbH & Co.KG
    journal article - other
    The paper reports mechanical properties of magnesium alloy AZ31 deformed at low and high srain rates. Material was prepared using squeeze casting technology. Compresion test were deformed at an initial strain rate of 0,000083 1/s at temperatures between room temperature and 300 grad.Celsius. Dynamic compression Hopkinson test were carried out at room temperature with impact velocities ranging from 11,2 to 21,9 m/s. Transmission electron microscopy investigations showed significant dislocation and twins densities. Results are discussed considering the importance of the activation volume determined in the stress relaxation tests obtained at the low strain rate and quite separately, the importance of adiabatic shear banding at hihg strain rates.
  • BUCHAR, J.; FOREJT, M.; JOPEK, M.:
    Evaluation of constitutive relations for high strain rate behaviour using the Taylor test.,
    Journal de Physique IV, Vol.10, (2000), No.9, pp.Pr9-75-Pr9-80, ISSN 1155-4339
    journal article - other
    Taylor test have been performed on specimens of ten metallic materials. The different one-dimaensional models have been used. In the next step the finite element code LS DYNA has been used in order to deduce the parameters in the Johnso-Cook constitutive equations.