Zobrazeno 1 - 10
of 18
pro vyhledávání: '"Ivan Nedbal"'
Autor:
Hynek Lauschmann, Ivan Nedbal
Publikováno v:
Image Analysis and Stereology, Vol 21, Iss 2, Pp 139-144 (2011)
The aim of this study is to estimate the velocity of fatigue crack growth (crack growth rate - CGR) from the texture in SEM images of crack surfaces. A simple and quick method is based on fitting training images as a linear combination of several sma
Externí odkaz:
https://doaj.org/article/bdebf905a6344c98bcb15aaa1fa0ffd5
Publikováno v:
Communications, Vol 8, Iss 4, Pp 10-14 (2006)
Quantitative fractography of fatigued structure parts can offer very useful and valuable information on the fatigue process. One of main contribution of this experimental method is a detailed description of fatigue crack growth in time and in space.
Externí odkaz:
https://doaj.org/article/4477f06d91e24b0fb860ae6d2f1ba93d
Publikováno v:
Image Analysis and Stereology, Vol 21, Iss 4 (2011)
The reconstitution of the history of a fatigue process is based on the knowledge of any correspondences between the morphology of the crack surface and the velocity of the crack growth (crack growth rate - CGR). The textural fractography is oriented
Externí odkaz:
https://doaj.org/article/0a2a2f7005384b73913d8aebb3ff8f3e
Publikováno v:
International Journal of Fatigue. 31:1062-1067
Knowing the real history of the fatigue process is a valuable asset to the for design, development, and reliable operation of structures exposed to time-variable loading service conditions. Information of this type is encoded in the fracture surface
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6adab3fb73303a988c27a286d6372aab
https://doi.org/10.1016/j.ijfatigue.2008.05.006
https://doi.org/10.1016/j.ijfatigue.2008.05.006
Publikováno v:
Fatigue & Fracture of Engineering Materials and Structures. 31:164-176
The most valuable quantitative information contained in fatigue fracture surfaces is related to striations. An alternative source of information, in particular if striation identification is impossible, can be the general characteristics of fracture
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::33c399819cb87350175c7d8435468d9f
https://doi.org/10.1111/j.1460-2695.2007.01211.x
https://doi.org/10.1111/j.1460-2695.2007.01211.x
Publikováno v:
Materials Characterization. 56:257-265
The conventional definition of fatigue crack growth rate (CGR) is shown to be fractographicly confusing in cases of different variable cycle loadings. A new concept of reference crack growth rate (RCGR) is proposed to cover all fatigue cracks regardl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::46b8b320f584fc4cff86ddb66bcdc67a
https://doi.org/10.1016/j.matchar.2005.10.013
https://doi.org/10.1016/j.matchar.2005.10.013
Publikováno v:
Materials Science Forum. 482:259-262
A new concept of counting time at fatigue processes is proposed, aimed to reach fractographic compatibility in cases of different loading sequences. Values of cycle effectivity are summarized to give the new reference time. The improvement is shown i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8debedbb3a7aa730a37f89af9f3d64e2
https://doi.org/10.4028/www.scientific.net/msf.482.259
https://doi.org/10.4028/www.scientific.net/msf.482.259
Publikováno v:
Intermetallics. 13:217-225
The fracture properties of the hot rolled Fe–28Al (at.%) intermetallic alloy with the addition of chromium and cerium were studied. The fracture toughness and the fatigue crack growth rate (da/dN−ΔK curves) were measured. Fractographic analysis
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b701bb42d0d44e0c71d8dae582c07567
https://doi.org/10.1016/j.intermet.2004.08.002
https://doi.org/10.1016/j.intermet.2004.08.002
Publikováno v:
Journal of Alloys and Compounds. 378:263-267
A study of fatigue behaviour in an Fe-28Al-3Cr-Ce (at.%) based alloy was carried out on compact tension (CT) specimens 5 mm in thickness. The specimens were loaded in tension at 20, 300 and 500 °C with 10 Hz frequency and R in the range from 0.05 to
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8f5435c7fe57b1a7709c9f3bf9a41853
https://doi.org/10.1016/j.jallcom.2003.11.164
https://doi.org/10.1016/j.jallcom.2003.11.164
Microstructure of a reactor pressure vessel steel close to the zones of ductile tearing and cleavage
Publikováno v:
Materials Science and Engineering: A. 357:423-428
A transmission electron microscopy study of a tempered bainitic nuclear reactor pressure vessel steel was carried out. Cross-section thin foils from a nickel electroplated CT25 specimen fractured in quasistatic loading at 0 °C were prepared in the d
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ebd4f85d9678fa697458509a315fb5d0
https://doi.org/10.1016/s0921-5093(03)00171-0
https://doi.org/10.1016/s0921-5093(03)00171-0