Identification of the ductile fracture area of X70 steel from DWTT broken specimens

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27230%2F17%3A10241889" target="_blank" >RIV/61989100:27230/17:10241889 - isvavai.cz</a>
Alternative codes found
RIV/61989100:27240/17:10241889
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Identification of the ductile fracture area of X70 steel from DWTT broken specimens
Original language description
Fracture surfaces of X70 steel DWTT broken samples are analysed using new surface evaluation concept. The presented approach is an alternative to an expert determining a ratio between the ductile and brittle fracture area. The analysed data source, i.e. x, y and z coordinates of points of fracture surface, comes from 3D scan using Limess Measurement Technique. Beside formerly used fractal geometry approach, new concept based on normal vector characteristics is used. The fracture surface net is generated by triangulation of points of fracture surface. For every triangle, the normal vector is computed. Thereafter, normal vector characteristics are clustered via k-means++ clustering algorithm. Application of the algorithm improves the correct detection of the brittle and ductile fractures significantly, so that the achieved clusters highly correspond to the real distribution of the ductile and brittle fracture areas on DWTT surface. Furthermore, applied methods are computationally very fast, so that it is possible to apply them for the scans with considerably higher magnitude. The correctness of the final cluster results are evaluated comparing with the real displacement of the brittle and ductile fracture, and by using various theoretical approaches.
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
2017
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
METAL 2017: conference proceedings : 26th International Conference on Metallurgy and Materials : (reviewed version) : May 24th-26th 2017, Hotel Voroněž I, Brno, Czech Republic, EU
ISBN
978-80-87294-79-6
ISSN
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e-ISSN
neuvedeno
Number of pages
6
Pages from-to
589-594
Publisher name
Tanger
Place of publication
Ostrava
Event location
Brno
Event date
May 24, 2017
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
000434346900090

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