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Title:
Leak-before-break analysis of a pressurizer - estimation of the elastic-plastic semi-elliptical through-wall crack opening displacement
Authors:
ID
Gubeljak, Nenad
(
Author
)
ID
Predan, Jožef
(
Author
)
ID
Kozak, Dražan
(
Author
)
Files:
http://divk.inovacionicentar.rs/ivk/ivk12/ivk1201-2.html
Language:
English
Work type:
Not categorized
Typology:
1.08 - Published Scientific Conference Contribution
Organization:
FS - Faculty of Mechanical Engineering
Abstract:
The work presents methods to estimate elastic-plastic semi-elliptical through-wall Crack Opening Displacement (COD) for the Leak-Before-Break analysis of a pressurizer. Usually proposed methods are based on GE/EPRI approach or on the reference stress and J-integral as stress intensity factor (SIF) along the crack tip. J-integral calculation provides the value of SIF ateach node of mesh along the crack tip, where values vary from the surface to middle section of material in respect to material properties. COD value is calculated through thickness along the centre of crack. The COD values are less sensitive to distance from crack tip and material properties. The engineering approach for the calculation of J-integral by using COD values and material full stress-strain data is given. COD values are proportional to surface length of semi-elliptical through wall crack of the pressurizer
Keywords:
mehanika loma
,
semi-elliptical through-wall crack
,
crack opening displacement
,
GE/EPRI approach
,
leak-before-break analysis
,
reference stress approach
Year of publishing:
2012
Number of pages:
Str. 30-34
PID:
20.500.12556/DKUM-50140
UDC:
620.1/.2:539.42
ISSN on article:
1451-3749
COBISS.SI-ID:
16182806
NUK URN:
URN:SI:UM:DK:TB5KA7KB
Publication date in DKUM:
10.07.2015
Views:
1862
Downloads:
47
Metadata:
Categories:
Misc.
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Record is a part of a proceedings
Title:
Eleventh Meeting "New trends in fatigue and fracture", NT2F11, Polignano a Mare, Italy, 3-6 July, 2011
COBISS.SI-ID:
16183062
Record is a part of a journal
Title:
Integritet i vek konstrukcija
Shortened title:
Integr. vek konstr.
Publisher:
Društvo za integritet i vek konstrukcija.
ISSN:
1451-3749
COBISS.SI-ID:
10931478
Secondary language
Language:
English
Title:
Primena koncepta procurivanja pre loma na posudu pod pritiskom - procena elasto-plastičnog otvaranja polu-eliptične prolazne prsline
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