A-star Mesh Based Initialization Algorithm for Functional Iteration and Newton-Raphson Procedure in Acoustic Emission

Kód výsledku v IS VaVaI

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Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

A-star Mesh Based Initialization Algorithm for Functional Iteration and Newton-Raphson Procedure in Acoustic Emission

Popis výsledku v původním jazyce

Acoustic emission is a non-destructive testing method detecting and identifying the defects that are generated by elastic waves in a solid body under stress. Finding geodesic surface curves is the essential task for the acoustic emission source localization. The aim of the internship is to find accurate geodesic curves on surfaces for acoustic emission. The computer programmes have to be quick and efficient. First, we focus on the A-star's algorithm to find a path between a start point and an end pointthrough the mesh on the surface considered. The drawbacks of this method and several improvements are presented in this paper. This approach provides us with the correct surface path but it is not accurate enough, thus the path is consequently used by other numerical methods called Functional Iteration and Newton-Raphson method. These two iterative methods use the theory of geodesic curves and provide good results in terms of accuracy and computational time.

Název v anglickém jazyce

A-star Mesh Based Initialization Algorithm for Functional Iteration and Newton-Raphson Procedure in Acoustic Emission

Popis výsledku anglicky

Acoustic emission is a non-destructive testing method detecting and identifying the defects that are generated by elastic waves in a solid body under stress. Finding geodesic surface curves is the essential task for the acoustic emission source localization. The aim of the internship is to find accurate geodesic curves on surfaces for acoustic emission. The computer programmes have to be quick and efficient. First, we focus on the A-star's algorithm to find a path between a start point and an end pointthrough the mesh on the surface considered. The drawbacks of this method and several improvements are presented in this paper. This approach provides us with the correct surface path but it is not accurate enough, thus the path is consequently used by other numerical methods called Functional Iteration and Newton-Raphson method. These two iterative methods use the theory of geodesic curves and provide good results in terms of accuracy and computational time.

Druh

D - Stať ve sborníku

CEP obor

BA - Obecná matematika

OECD FORD obor

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Projekt

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Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)<br>S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2011

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

SPMS 2011 Stochastic and Physical Monitoring Systems - Proceedings

ISBN

978-80-01-04916-7

ISSN

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e-ISSN

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Počet stran výsledku

7

Strana od-do

9-15

Název nakladatele

ČVUT, Fakulta jaderná a fyzikálně inženýrská

Místo vydání

Praha

Místo konání akce

Křižánky

Datum konání akce

27. 6. 2011

Typ akce podle státní příslušnosti

EUR - Evropská akce

Kód UT WoS článku

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