Zobrazeno 1 - 10
of 45
pro vyhledávání: '"Jana Horníková"'
Autor:
Karel Slámečka, Petr Šesták, Tomáš Vojtek, Marta Kianicová, Jana Horníková, Pavel Šandera, Jaroslav Pokluda
Publikováno v:
Advances in Materials Science and Engineering, Vol 2016 (2016)
Results are given of a fractographic study of biaxial in-phase bending/torsion fatigue fractures in specimens made of nitrided steel and nickel-based superalloy with protective coatings (diffusion coatings and plasma-sprayed thermal barrier coatings)
Externí odkaz:
https://doaj.org/article/b2514909ce6e4fe2b6d89e58a0506de3
Publikováno v:
Defect and Diffusion Forum. 422:45-49
The absorbed impact energy KV and the dynamic fracture toughness KId of the low-alloyed steel OCHN3MFA were measured in the respective temperature ranges 〈–40, 90〉 and 〈–60, –20〉 °C. The values of impact energy in the range of 〈14.1,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1b7de833fa35e72f591e51f76f61f090
https://doi.org/10.4028/p-psqq46
https://doi.org/10.4028/p-psqq46
Publikováno v:
Defect and Diffusion Forum. 405:271-276
The effect of surface roughness of virgin specimens (prior roughness) made of low-alloyed high strength steel on their fatigue life after the case-hardening treatment was studied by rotating bending tests of virgin and nitrided samples. In a whole ra
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2b1a38cce0fff3ee696d8ee72be39bff
https://doi.org/10.4028/www.scientific.net/ddf.405.271
https://doi.org/10.4028/www.scientific.net/ddf.405.271
Publikováno v:
Key Engineering Materials. 827:153-158
The critical length aIc of a mode I crack that corresponds to a vanishing of the influence of the notch stress concentration can be approximately expressed by a formula reported by Lefort. This study aimed to generalize his approach to shear mode cra
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d3f7ed315f612ed889acaa3f7fde8c93
https://doi.org/10.4028/www.scientific.net/kem.827.153
https://doi.org/10.4028/www.scientific.net/kem.827.153
Autor:
Marta Kianicová, Jaroslav Pokluda, Stanislav Žák, Pavel Šandera, Tomáš Vojtek, Jana Horníková
Publikováno v:
Theoretical and Applied Fracture Mechanics. 101:35-45
In metallic materials the paths and fronts of fatigue cracks usually exhibit a certain tortuosity caused by microstructural heterogeneities. Our previous calculations for remote mode III loading revealed that the in-plane tortuosity of pre-crack fron
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::996f8ec2198cf6314fabca2f7193ef15
https://doi.org/10.1016/j.tafmec.2019.01.030
https://doi.org/10.1016/j.tafmec.2019.01.030
Publikováno v:
FRACTURE AND DAMAGE MECHANICS: Theory, Simulation and Experiment.
This article presents a new method for determination of parameters of the Ramberg-Osgood (R-O) approximation of the tensile diagram based on the loading-frame displacement. This procedure was successfully verified on the samples of the high strength
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6d0e40a243b88a291b896b6c8ce74015
https://doi.org/10.1063/5.0033973
https://doi.org/10.1063/5.0033973
Publikováno v:
Key Engineering Materials. 774:48-53
The influence of the notch geometry on the stress intensity factor at the front of the emanating cracks is well known for the opening loading mode. The critical length of the crack corresponding to a vanishing of the influence of the notch stress con
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::05fb297a3e78644cf6fb9ab42ebab7a1
https://doi.org/10.4028/www.scientific.net/kem.774.48
https://doi.org/10.4028/www.scientific.net/kem.774.48
Publikováno v:
Materials
Volume 14
Issue 19
Materials . 2021, vol. 14, issue 19, p. 1-28.
Materials, Vol 14, Iss 5875, p 5875 (2021)
Volume 14
Issue 19
Materials . 2021, vol. 14, issue 19, p. 1-28.
Materials, Vol 14, Iss 5875, p 5875 (2021)
The temperature dependence of tensile characteristics and fracture toughness of the standardly heat-treated low-alloyed steel OCHN3MFA along with three additionally heat-treated grades was experimentally studied. In the temperature range of ⟨−196
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2cd6f5f94d720dfa27f971c431d78a43
https://doi.org/10.3390/ma14195875
https://doi.org/10.3390/ma14195875
Publikováno v:
Key Engineering Materials. 754:214-217
The paper is related to experiments on near-threshold fatigue cracks under shear modes II, III and II+III in bcc metals. Cylindrical bars with circumferential cracked notch were loaded by shear force. In-plane precracks with microtortuous geometry we
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0a52a7044a2f20db1f8ef8d69a0d2085
https://doi.org/10.4028/www.scientific.net/kem.754.214
https://doi.org/10.4028/www.scientific.net/kem.754.214
Publikováno v:
Materialwissenschaft und Werkstofftechnik. 48:820-830
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b79a64e86bfac11b01fbc126e1ec485b
https://doi.org/10.1002/mawe.201700030
https://doi.org/10.1002/mawe.201700030