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Title:
Fracture toughness of heterogeneous energy components
Authors:
ID
Praunseis, Zdravko
(
Author
)
Files:
http://www.fe.uni-mb.si/images/stories/jet/e-jet/revija_jet_-_volume_5_-_issue_3_-_avgust_-_internet.pdf
Language:
English
Work type:
Not categorized
Typology:
1.01 - Original Scientific Article
Organization:
FE - Faculty of Energy Technology
Abstract:
The presence of different microstructures along pre-crack fatigue fronts has important effects on the critical crack tip opening displacement (CTOD). This value is the relevant parameter for the safe servicing of energy components (penstocks). In the case of specimens with a through thickness notch partly in the weld metal, partly in the heat affected zone and partly in the base material, i.e. using the composite notched specimen, the fracture behaviour strongly depends on the portion of ductile base material, its size and the distribution of the mismatching factor along the vicinity of the crack front.
Keywords:
fracture toughness
,
energy materials
,
experimental testing
Year of publishing:
2012
Number of pages:
str. 39-45
Numbering:
Vol. 5, iss. 3
PID:
20.500.12556/DKUM-49865
UDC:
621.791:620.1
ISSN on article:
1855-5748
COBISS.SI-ID:
1024110684
NUK URN:
URN:SI:UM:DK:ELBQC9PK
Publication date in DKUM:
10.07.2015
Views:
2136
Downloads:
55
Metadata:
Categories:
Misc.
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Record is a part of a journal
Title:
Journal of energy technology
Publisher:
University of Maribor, University of Maribor Press, Fakulteta za energetiko
ISSN:
1855-5748
COBISS.SI-ID:
243311360
Secondary language
Language:
Slovenian
Title:
Lomna žilavost heterogenih energetskih komponent
Abstract:
Prisotnost različnih mikrostruktur vzdolž fronte utrujenostne razpoke vpliva na kritično odpiranje konice razpoke (CTOD). Ta vrednost je relevantni parameter za varno obratovanje energetskih component (npr. zapornic hidroelektrarn). V primeru, ko je fronta konice razpoke nameščena po celotni debelini preizkušanca t.i. kompozitna razpoka in je delno prisotna v materialu zvara, toplotno vplivanem področju in osnovnem materialu, takrat je lomno obnašanje materiala odvisno od deleža žilavega osnovnega materiala, velikosti in porazdelitve faktorja trdnostne neenakosti vzdolž fronte konice razpoke.
Keywords:
energetske komponente
,
zvarni spoji
,
lomna žilavost
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