EVALUATION OF CRACKING BEHAVIOR OF PIPELINE X70 STEEL FROM DWTT BROKEN SPECIMENS

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27240%2F15%3A86096891" target="_blank" >RIV/61989100:27240/15:86096891 - isvavai.cz</a>
Alternative codes found
RIV/61989100:27600/15:86096891 RIV/61989100:27690/15:86096891 RIV/61989100:27360/15:86096891
Result on the web
<a href="http://www.metal2015.com/files/proceedings/21/papers/4074.pdf" target="_blank" >http://www.metal2015.com/files/proceedings/21/papers/4074.pdf</a>
DOI - Digital Object Identifier
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Result language
angličtina
Original language name
EVALUATION OF CRACKING BEHAVIOR OF PIPELINE X70 STEEL FROM DWTT BROKEN SPECIMENS
Original language description
Fracture surfaces of X70 steel DWTT broken samples are analyzed using statistical methods and fractal concepts. Applying self-affine fracture profile construction method and the first return probability method the Hurst exponent of ductile fracture areas has been found. Increasing percentage of ductile fracture on broken DWTT sample surface the Hurst exponent grows. Modeling of the DWTT fracture surface area by triangle net the statistical distribution of deviations between normal vectors of two neighboring elementary triangles has been discovered. This distribution behaves as Gaussian mixture. The mean value of deviation angles is lower for ductile than for brittle fracture regions whereas scatter of deviation angles are about the same for the both modes of cracking. Calculated fracture surface map of ductile fracture probability highly corresponds to real distribution of ductile and brittle fracture areas on fracture surface of the broken sample. Newly developed statistical methods of the fracture surface treatment of DWTT broken samples is useful tool for objective evaluation of ductile fracture percentage.
Czech name
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Czech description
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Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2015
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
METAL 2015 : 24th International Conference on Metallurgy and Materials : conference proceedings : June 3rd-5th 2015, Hotel Voroněž I, Brno, Czech Republic, EU
ISBN
978-80-87294-62-8
ISSN
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e-ISSN
neuvedeno
Number of pages
6
Pages from-to
573-578
Publisher name
Tanger
Place of publication
Ostrava
Event location
Brno
Event date
Jun 3, 2015
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
000374706100089

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