Institute of Physics of Materials AS CR, v. v. i. > Groups > Special Issues of Fracture Mechanics and Materials‘ Fatigue (FRACTIGUE)

Special Issues of Fracture Mechanics and Materials‘ Fatigue (FRACTIGUE)

Headdoc. Ing. Stanislav Seitl, Ph.D.
E-mail [javascript protected email address]
Phone number+420 532 290 417

The research group focuses on determining the fracture mechanical and fatigue properties of materials beyond normal testing. In the case of fatigue loading of metals, it is beyond 107 cycles, in the case of concrete, for which fatigue tests are not normally performed, it is actually more than 1 cycle. Under these conditions, research into the relationship between the structure and properties of materials and failure mechanisms is very topical, especially for cases of new materials produced by additive technologies and for concrete building materials. Gigacycle fatigue materials research can serve as a source of material data for applications where a high number of cycles is critical, as well as for applications where high load frequency plays an important role. Within the group, we also focus on the assessment of stress concentrators related to shape changes or material changes (inclusions, interfaces in composites, etc.) in cases that have not yet been studied. In particular, we use and develop methods of generalized linear elastic fracture mechanics and methods of finite fracture mechanics, which always apply methods of assessing the stability of general stress concentrators in / at finite distances from the point of highest stress.


NamePhone numbersRoomsE-mail
doc. Ing. Jan Klusák, Ph.D. +420 532 290 348118 [javascript protected email address]
Ing. Lucie Malíková, Ph.D. +420 532 290 367604 [javascript protected email address]
Ing. Jan Mašek, Ph.D. +420 532 290 430603 [javascript protected email address]
Ing. Petr Miarka, Ph.D. +420 532 290 430603 [javascript protected email address]


NamePhone numbersRoomsE-mail
Pavel Cejnek +420 532 290 361107 [javascript protected email address]

Phd students

NamePhone numbersRoomsE-mail
Ing. Pavel Doubek +420 532 290 417316
Ing. Kamila Kozáková +420 532 290 367604 [javascript protected email address]
Ing. David Markusík +420 532 290 430603 [javascript protected email address]
Ing. Mohammad Sami Al Khazali +420 532 290 336128b [javascript protected email address]

Project numberNameInvestigator
21-14886S Influence of material properties of high strength steels on durability of engineering structures and bridgesdoc. Ing. Stanislav Seitl, Ph.D.


Project numberNameInvestigator
4000138900/22/NL/GP/gg Characterisation of Thermal and Mechanical Performance of SIM Cryostat Strapsdoc. Ing. Jan Klusák, Ph.D.
8J22AT008 Mechanical fracture quantification of role of hemp fibres on self-healing processes in selected composites (KvaRK)doc. Ing. Stanislav Seitl, Ph.D.
CZ.01.1.02/0.0/0.0/20_321/0024649 Ultrasonic devices for gigacycle fatigue testing of materialsdoc. Ing. Jan Klusák, Ph.D.
21-08772S Influence of Self-Healing effects on structural fatigue life extension of structures made from high performance concrete (InShe)doc. Ing. Stanislav Seitl, Ph.D.
8J20AT013 Integrity and durability aspects of recycled aggregates composites (InDuRAC)doc. Ing. Jan Klusák, Ph.D.
20-00761S Influence of material properties of stainless steels on reliability of bridge structuresdoc. Ing. Stanislav Seitl, Ph.D.
8J18AT009 Failure initiation and fracture of quasi-brittle building materials (FInFraM)Ing. Lucie Malíková, Ph.D.
CZ.01.1.02/0.0/0.0/15_019/0004505 Complex design of girders from advanced concretesdoc. Ing. Stanislav Seitl, Ph.D.
17-01589S Advanced computational and probabilistic modelling of steel structures taking account fatigue damagedoc. Ing. Stanislav Seitl, Ph.D.
16-18702S AMIRI − Aggregate-Matrix-Interface Related Issues in silicate-based compositesdoc. Ing. Jan Klusák, Ph.D.
CZ.1.07/2.3.00/45.0040 Science Academy - critical thinking and practical application of scientific and technical knowledge in real lifedoc. Ing. Jan Klusák, Ph.D.
7AMB1-4AT012 Development of new testing configurations for determination of relevant values of fracture characteristics of cementitious composites (DeTeCon)doc. Ing. Stanislav Seitl, Ph.D.
M100411204 Utilization of termographic techniques and advance probabilistic method for the efficient estimation of Wöhler curve parametersdoc. Ing. Stanislav Seitl, Ph.D.
P105/11/0466 Energetic and stress state aspects of quasi-brittle fracture – consequences for determination of fracture-mechanical parameters of silicate compositesdoc. Ing. Stanislav Seitl, Ph.D.
P104/11/0833 Response of cement based composites to fatigue loading: advanced numerical modeling and testingdoc. Ing. Stanislav Seitl, Ph.D.
P108/10/2049 Crack initiation and propagation from interface-related singular stress concentratorsdoc. Ing. Jan Klusák, Ph.D.
M100410901 Fracture mechanics description of three dimensional structures: numerical analysis and physical consequences of constraintdoc. Ing. Stanislav Seitl, Ph.D.
KJB200410901 Fracture of silicate based composites studied on core drilled specimens – numerical-modeling background for advanced fracture parameters determinationdoc. Ing. Stanislav Seitl, Ph.D.
101/08/1623 Innovative techniques for assessment of residual life of bodies with fatiguedoc. Ing. Stanislav Seitl, Ph.D.
101/08/0994 Determination of conditions of failure initiation in bi-material wedges composed of two orthotropic materialsdoc. Ing. Jan Klusák, Ph.D.
103/08/0963 Basic fatigue characteristic and fracture of advanced building materialsdoc. Ing. Stanislav Seitl, Ph.D.
101/04/P001 The influence of constraint on threshold values of the stress intensity factordoc. Ing. Stanislav Seitl, Ph.D.
106/03/P054 Linear Elastic Fracture Mechanics of Bi-material notchesdoc. Ing. Jan Klusák, Ph.D.


Servohydraulic system Zwick/Roell Amsler HC25, push-pull

Contact person: prof. Ing. Pavel Hutař, Ph.D.
Compact table model of servo-hydraulic pulsator dedicated for static and dynamic material testing. Pulsator is capable to load the specimen by forces up to 25 kN. Maximum stroke of grips is 250 mm. Testing device is able to control mechanical tests in control regime of force or displacement. Electronic controlling system enables tailoring of a course of the mechanical test according to operator needs. Zwick/Roell Amsler HC25 is mainly determined for fatigue tests with low frequencies and with needs of fine level of control.

Ultrasonic system for very high cycle fatigue measurements

Contact person: doc. Ing. Jan Klusák, Ph.D.
Ultrasonic fatigue system pulsating at frequency of 20 kHz. This allows real-time measurement of very high cycle fatigue properties of materials at the number of cycles between 10 million to 10 billion. Measurement is possible under tension/compression and tension/tension conditions. It enables the measurement of SN (Wöhler) curves and fatigue crack propagation rates.

Resonant system Fractronic 7801, 100 kN, push-pull, temperature up to 800°C

Contact person: prof. Ing. Pavel Hutař, Ph.D.
Electromagnetic resonant pulsator mainly for fatigue tests at high temperatures. Movable crosshead with possible recording of its position enables to measure cyclic creep curves and also conducting tests with periodical changes of mean load (i.e. suitable for combined cyclic tests). Test frequency ranges from 100 to 130 Hz.


Domski J., Gancarz M., Benešová A., Šimonová H., Seitl S., Frantík P., Keršner Z.: Effect of tire cords, steel and polypropylene fiber content on the fatigue response of cement-based mortars. Advances in Science and Technology 145 (2024) 77-86

Klusák J., Fintová S., Kozáková K., Jambor M., Seitl S.: Risk volume effect in very high cycle fatigue of 304L stainless steel. Int. J. Fatigue 178 (2024) 108016

Kozáková K., Klusák J., Fintová S.: The length parameter for gigacycle fatigue life predictions of notched specimens made of 304L steel. Int. J. Fatigue 178 (2024) 107980

Malíková (Šestáková) L., Miarka P.: Fatigue crack propagation near a corrosion pit in a HSS specimen. Theor. Appl. Fract. Mech. 129 (2024) 104214


Bílek V., Souček K., Khestl F., Bujdoš D., Seitl S.: Mechanical and fracture parameters of concretes with different water to cement ratio in two different conditions of curing. Procedia Struct. Integr. 43 (2023) 107-112

Miarka P., Malíková (Šestáková) L., Bílek V., Benešová A., Merta I., Seitl S.: On the fatigue resistance of high performance concrete. AIP Conference Proceedings 2950 (2023) 020040

Vyhlídal M., Klusák J., Kucharczyková B., Daněk P., Šimonová H., Keršner Z.: Influence of the interfacial transition zone between a steel inclusion and cement-based composite on the fracture response of a bent specimen. Eng. Fract. Mech. 286 (2023) 109256

Miarka P., Cruces A., Lopez-Crespo P., De Corte W.: On the localisation of the FPZ under a pure mode II load identified by a hybrid method. Eng. Fract. Mech. 279 (2023) 109019

Kozáková K., Trávníček L., Klusák J., Poduška J., Hutař P.: The influence of different notches on fatigue lifetime of round bar specimens made of HDPE. Trans. VSB TU Ostrava Ser. 23 (2023) 1-4

Doubek P., Malíková (Šestáková) L., Miarka P., Seitl S.: Laser cladded protective layer on the S960 change of microhardness in the vicinity of the bi-material interface. Procedia Struct. Integr. 43 (2023) 101-106

Bílek V., Bujdoš D., Dubovský V., Khestl F., Procházka L., Malíková (Šestáková) L., Miarka P.: Development of fracture and other mechanical properties of concretes with different curing. AIP Conference Proceedings 2950 (2023) 020010

Klusák J., Kozáková K., Jambor M., Seitl S.: Fatigue behavior of DIN 1.4307 and DIN 1.4306 stainless steels under high frequency loading. Procedia Struct. Integr. 43 (2023) 142-147

Malíková (Šestáková) L., Juhászová T., Doubek P., Krejsa M., Seitl S.: Influence of a corrosion pit on behavior of a nearby crack. AIP Conference Proceedings 2848 (2023) 020003

Seitl S., Horník V., Lesiuk G., Kunz L.: Influence of micro-structure of selected components made from AISI 304 on the mechanical properties. Procedia Struct. Integr. 43 (2023) 113-118

Malíková (Šestáková) L., Doubek P., Miarka P., Seitl S.: Numerical modelling of stress field near a crack tip influenced by corrosion. AIP Conference Proceedings 2950 (2023) 020023

Miarka P., Cruces A., Lopez-Crespo P., De Corte W.: Fracture process zone development and length assessment under the mixed-mode I/II load analysed by digital image correlation technique. Cement and Concrete Research 173 (2023) 1-22

Bílek V., Procházka L., Khestl F., Bujdoš D., Seitl S.: Self-healing capacity of differently cured concretes: Fracture characteristic development. AIP Conference Proceedings 2848 (2023) 020026

Juhászová T., Miarka P., Seitl S.: Comparison of crack growth rates of IPE beams made from stainless steel in three-point bending. Procedia Struct. Integr. 51 (2023) 213-218

Gruber K., Szymczyk-Ziołkowska P., Dziuba S., Duda S., Zielonka P., Seitl S., Lesiuk G.: Fatigue crack growth characterization of Inconel 718 after additive manufacturing by laser powder bed fusion and heat treatment. Int. J. Fatigue 166 (2023) 107287

Miarka P., Seitl S., Klusák J., Malíková (Šestáková) L., Merta I., Bílek V.: High-cycle fatigue cracks in concrete investigated by micro cT tomography.. Procedia Struct. Integr. 43 (2023) 124-129

Malíková (Šestáková) L., Doubek P., Juhászová T., Krejsa M., Seitl S.: Fatigue crack propagation under corrosion of high-strength steel. Procedia Struct. Integr. 43 (2023) 264-269

Malíková (Šestáková) L., Benešová A., Al Khazali M., Seitl S.: Stress concetration factor on a corrosion pit. Trans. VSB TU Ostrava Ser. 23 (2023) 27-30

Sarkar A., Klusák J., Kozáková K., Christ H.: Very high cycle fatigue behavior of austenitic stainless steel in annealed and predeformed condition. Materials Performance and Characterization 12 (2023) 78-92

Juhászová T., Miarka P., Jindra D., Kala Z., Seitl S.: Evaluation of fatigue crack growth rates in an IPE beam made of AISI 304 under various stress ratios. Procedia Struct. Integr. 43 (2023) 172-177

Brožovský J., Krejsa M., Lehner P., Pařenica P., Seitl S.: Reliability analysis of bridge details from high-strength steel with use of DOProC approach: Challenges and research directions. AIP Conference Proceedings 2950 (2023) 020032


Seitl S., Pokorný P., Klusák J., Duda S., Lesiuk G.: Effect of specimen thickness on fatigue crack growth resistance in Paris region in AISI 304 steel. Structural. Integr. 24 (2022) 291-297

Malíková (Šestáková) L., Doubek P., Juhászová T., Klusák J., Seitl S.: Interaction of a fatigue crack and a corrosion dimple in a high-strength steel specimen. Procedia Struct. Integr. 42 (2022) 1082-1089

Klusák J., Kozáková K., Fintová S., Seitl S.: Fatigue lifetimes of 1.4306 and 1.4307 stainless steels subjected to ultrasonic loading. Procedia Struct. Integr. 42 (2022) 1369-1375

Seitl S., Benešová A., Blasón Gonzáles S., Miarka P., Klusák J., Bílek V.: Advanced statistical evaluation of fatigue data obtained during the measurement of concrete mixtures with various water-cement ratio. Engineering mechanics 2022 1 (2022) 361-364

Seitl S., Pokorný P., Benešová A., Juhászová T., Kala Z.: Variance of selected properties from various structural elements made from AISI 304. Trans. VSB TU Ostrava Ser. 22 (2022) 39-44

Kozáková K., Fintová S., Klusák J.: Fatigue life of notches: an effect of manufacturing. Procedia Struct. Integr. 42 (2022) 270-275

Kozáková K., Klusák J.: Fracture mechanics assessment of notches subjected to very high-cycle fatigue loading. Structural. Integr. 24 (2022) 299-305

Seitl S., Benešová A., Paredes Pascual Á., Malíková (Šestáková) L., Bujdoš D., Bílek V.: Fatigue and fracture properties of concrete mixtures with various water to cement ratio and maximum size of aggregates. Procedia Struct. Integr. 42 (2022) 1512-1519

Malíková (Šestáková) L., Miarka P., Doubek P., Seitl S.: Influence of the interphase between laser-cladded metal layer and steel substrate on the fatigue propagation of a short edge crack. Frattura ed Integrita Strutturale 59 (2022) 514-524

Juhászová T., Miarka P., Jindra D., Kala Z., Seitl S.: Comparison of crack propagation rates in selected structural components made from AISI 304 grades: Three-point bending test. Procedia Struct. Integr. 42 (2022) 1090-1097

Blasón Gonzáles S., Werner T., Kruse J., Madia M., Miarka P., Seitl S., Benedetti M.: Determination of fatigue crack growth in the near-threshold regime using small-scale specimens. Theor. Appl. Fract. Mech. 118 (2022) 103224

Doubek P., Malíková (Šestáková) L., Seitl S.: Analysis of the material properties in the vicinity of bi-material interface made by the laser cladded protective layer on the S960. Procedia Struct. Integr. 42 (2022) 1529-1536

Miarka P., Seitl S., Bílek V., Cifuentes Bulte H.: Assessment of fatigue resistance of concrete: S-N curves to the Paris law curves. Construction and Building Materials 341 (2022) 127811

Vyhlídal M., Klusák J.: Numerical study of specimen with steel inclusion: Influence of interfacial transition zone. Procedia Struct. Integr. 42 (2022) 1000-1007

Malíková (Šestáková) L., Doubek P., Juhászová T., Seitl S.: Fracture Parameters of a Perpendicular Crack With its Tip Close to a Corrosion Pit. Trans. VSB TU Ostrava Ser. 22 (2022) 30-34

Klusák J., Kopp D.: The role of the surface in crack initiation in sharp and bi-material notches. Structural. Integr. 24 (2022) 315-321

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