Characterisation of mechanical properties using the instrumented hardness test method

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F46356088%3A_____%2F15%3A%230001747" target="_blank" >RIV/46356088:_____/15:#0001747 - isvavai.cz</a>

Výsledek na webu

<a href="http://www.metal2016.com/files/proceedings/21/papers/3837.pdf" target="_blank" >http://www.metal2016.com/files/proceedings/21/papers/3837.pdf</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Characterisation of mechanical properties using the instrumented hardness test method

Popis výsledku v původním jazyce

Monitoring the mechanical properties changes is very important to assure structural integrity of NPP components, especially within the context of their operational life extension. Determination of current mechanical properties of several structural materials of NPP components, especially reactor internals, is not possible using the standard testing methods, in connection with the material volume necessary for the testing. In comparison with reactor pressure vessel, reactor internals are usually not covered by the system of surveillance samples as well as other hardly replaceable components of the primary circuit, e.g. primary piping, steam generator etc. Sampling of the optimal material volume usually brings adverse consequences of affecting the integrity of component or in several cases destruction of the whole evaluated component. For standard size specimens, it is also necessary to take into account the high activity of the material, with influence on the collective dose of hot cell facilities personnel. Aim of this work is to present the advantages of the semi-destructive testing method (instrumented hardness test method) in the process current mechanical properties evaluation of the hardly replaceable long-term operated NPP components. Instrumented hardness test method is a semi-destructive testing method for direct measurement of mechanical and fracture properties of materials including yield strength, ultimate tensile strength (UTS), strain hardening exponent, and fracture toughness. Semi-destructive testing techniques use technological processes and equipment enabling the direct determination of mechanical properties from the component surface without affecting its integrity. Advantage of semi-destructive degradation mechanisms quantification could be very promising for use in the field of nuclear energy for components of NPP as well as in other industrial sectors, e.g. chemical and petrochemical industry.

Název v anglickém jazyce

Characterisation of mechanical properties using the instrumented hardness test method

Popis výsledku anglicky

Monitoring the mechanical properties changes is very important to assure structural integrity of NPP components, especially within the context of their operational life extension. Determination of current mechanical properties of several structural materials of NPP components, especially reactor internals, is not possible using the standard testing methods, in connection with the material volume necessary for the testing. In comparison with reactor pressure vessel, reactor internals are usually not covered by the system of surveillance samples as well as other hardly replaceable components of the primary circuit, e.g. primary piping, steam generator etc. Sampling of the optimal material volume usually brings adverse consequences of affecting the integrity of component or in several cases destruction of the whole evaluated component. For standard size specimens, it is also necessary to take into account the high activity of the material, with influence on the collective dose of hot cell facilities personnel. Aim of this work is to present the advantages of the semi-destructive testing method (instrumented hardness test method) in the process current mechanical properties evaluation of the hardly replaceable long-term operated NPP components. Instrumented hardness test method is a semi-destructive testing method for direct measurement of mechanical and fracture properties of materials including yield strength, ultimate tensile strength (UTS), strain hardening exponent, and fracture toughness. Semi-destructive testing techniques use technological processes and equipment enabling the direct determination of mechanical properties from the component surface without affecting its integrity. Advantage of semi-destructive degradation mechanisms quantification could be very promising for use in the field of nuclear energy for components of NPP as well as in other industrial sectors, e.g. chemical and petrochemical industry.

Druh

D - Stať ve sborníku

CEP obor

JF - Jaderná energetika

OECD FORD obor

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Projekt

<a href="/cs/project/TA03011266" target="_blank" >TA03011266: Vývoj inovativní metodiky semidestruktivního hodnocení degradace vysoce aktivních materiálů pro hodnocení životnosti jaderných zařízení</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2015

Kód důvěrnosti údajů

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

Název statě ve sborníku

Metal 2015

ISBN

978-80-87294-58-1

ISSN

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e-ISSN

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Počet stran výsledku

6

Strana od-do

-1

Název nakladatele

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Místo vydání

Brno

Místo konání akce

Brno

Datum konání akce

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Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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