Zobrazeno 1 - 10
of 36
pro vyhledávání: '"Otakar Bokuvka"'
Publikováno v:
Applied Engineering Letters, Vol 1, Iss 4, Pp 111-114 (2016)
Article provides experimental results in the field of ultra-high cycle fatigue behaviour of C55 high grade carbon steel obtained at high-frequency loading (f ≈ 20 kHz, T = 20 ± 10 °C, R = -1). The results confirm a continuous decrease of fatigue
Externí odkaz:
https://doaj.org/article/13c10ad3cd5d4701a634a8cd63550686
Autor:
Daniel Varecha, Slavomir Hrcek, Otakar Bokuvka, Frantisek Novy, Libor Trsko, Ruzica Nikolic, Michal Jambor
Publikováno v:
Communications, Vol 22, Iss 4, Pp 97-102 (2020)
In this paper the authors introduce results from the field of the fatigue safety of selected steels in the region of ultra - high number of loading cycles. The fatigue tests were carried out at high frequency tension - compression loading (f = 20 kHz
Externí odkaz:
https://doaj.org/article/5ce68a0af3f6430bb462cb8f6fd21db5
Autor:
Michal Jambor, Frantisek Novy, Milos Mician, Libor Trsko, Otakar Bokuvka, Filip Pastorek, Daniel Harmaniak
Publikováno v:
Communications, Vol 20, Iss 4, Pp 29-35 (2018)
In this paper are presented results of mechanical properties evaluation of the thin sheets welds made of the S960MC TMCP steel, which were executed using the GMAW procedure with different process parameters. The microstructural changes in the heat af
Externí odkaz:
https://doaj.org/article/18bf7733ef7f4da2a1b7a8f459d8255d
Publikováno v:
Communications, Vol 20, Iss 3, Pp 15-18 (2018)
The composite alumina-titania coatings have been widely used in industry fields to protect metallic components from wear, corrosion and thereby prolonging their service time. This paper presents an analysis of the microstructure and mechanical proper
Externí odkaz:
https://doaj.org/article/0724bdd116184e9386b73f404942fe4c
Publikováno v:
Communications, Vol 18, Iss 3, Pp 83-87 (2016)
The authors of this paper, based on their own results, discuss fatigue properties of low-alloyed fine-grained steel STRENX 700MC obtained in the ultra-high-cycle region (gigacycle fatigue) with regard to the reliability and safety of structural eleme
Externí odkaz:
https://doaj.org/article/962ce43eec664123a604ca629b7afcd0
Publikováno v:
Communications, Vol 17, Iss 3, Pp 62-66 (2015)
In this paper the authors present and discuss results of both fatigue life tests and fatigue crack growth rate tests performed for C30 steel which is used for railway axle manufacturing. The obtained results demonstrate the differences in fatigue str
Externí odkaz:
https://doaj.org/article/8e280cdb70844eebb4c42a993d5b2070
Publikováno v:
Communications, Vol 14, Iss 4, Pp 94-98 (2012)
The paper presents the authors' results of experimental examination of pipeline steel X70 fatigue properties before and after shot peening application, including relaxation of residual stresses during rotating bendi ng fatigue loading (f 30 Hz, T 20
Externí odkaz:
https://doaj.org/article/f12211334dec427ca34026d82ac5426f
Publikováno v:
Communications, Vol 12, Iss 4, Pp 49-54 (2010)
This work presents information about the influence of Ni and ZnFe galvanic metallization on the fatigue properties of S235JRG2 steel and about the TiN physical vapour deposition and WC thermal spraying on the fatigue properties of S355J0 steel in the
Externí odkaz:
https://doaj.org/article/8c93ddf850f4468f93903c3ec9e00c26
Autor:
Marian Bursak, Otakar Bokuvka
Publikováno v:
Communications, Vol 11, Iss 1, Pp 27-30 (2009)
The paper deals with the influence of cyclic loading (tension-compression, bending and torsion) on the course of the fatigue life and the fatigue limit of advanced low-alloyed strip steel with increased atmospheric corrosion resistance. The tested st
Externí odkaz:
https://doaj.org/article/69af7818860c4cc9b489bc3a3f1f5480
Autor:
Marian Bursak, Otakar Bokuvka
Publikováno v:
Communications, Vol 8, Iss 4, Pp 34-37 (2006)
Treatment technology can influence the fatigue process positively or negatively. The paper analyzes the influence of cold levelling of strips from coils of steel grade E 700 TS (Re 700 MPa) on the fatigue crack initiation and the fatigue limit under
Externí odkaz:
https://doaj.org/article/8507db4e0c97474a83ed4f970c9db492