Casting stress detection by X-rays

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23640%2F03%3A00000095" target="_blank" >RIV/49777513:23640/03:00000095 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Casting stress detection by X-rays

Popis výsledku v původním jazyce

Thermal stresses are induced by temperature differences between the individual parts of cooled castings. In addition to the thermal stresses, transformation stresses are set up in the casting due to the increase in volume that takes place as austenite transforms to other structures. At low temperatures, the stress due to contraction and phase transformation adds to the nominal load of the cast component which may cause its fracture far before the load has reached the yield point. At elevated temperatures, the elastic component of the strain diminishes while the plastic strain increasesoup to a critical range of temperatures (typically, 620 - 650°C for steel and 400 - 620°C for grey cast iron) when the plastic strain prevails. Mostly, it is believed that at this stage the stresses are completely relieved. But our x-ray measurements carried out by a special technique which is to be discussed in detail in our contribution show that it is not true.

Název v anglickém jazyce

Casting stress detection by X-rays

Popis výsledku anglicky

Thermal stresses are induced by temperature differences between the individual parts of cooled castings. In addition to the thermal stresses, transformation stresses are set up in the casting due to the increase in volume that takes place as austenite transforms to other structures. At low temperatures, the stress due to contraction and phase transformation adds to the nominal load of the cast component which may cause its fracture far before the load has reached the yield point. At elevated temperatures, the elastic component of the strain diminishes while the plastic strain increasesoup to a critical range of temperatures (typically, 620 - 650°C for steel and 400 - 620°C for grey cast iron) when the plastic strain prevails. Mostly, it is believed that at this stage the stresses are completely relieved. But our x-ray measurements carried out by a special technique which is to be discussed in detail in our contribution show that it is not true.

Druh

D - Stať ve sborníku

CEP obor

JS - Řízení spolehlivosti a kvality, zkušebnictví

OECD FORD obor

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Projekt

<a href="/cs/project/LN00B084" target="_blank" >LN00B084: Nové technologie Výzkumné centrum v Západočeském regionu</a><br>

Návaznosti

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

Rok uplatnění

2003

Kód důvěrnosti údajů

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

Název statě ve sborníku

NDT in Progress

ISBN

80-214-2475-3

ISSN

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e-ISSN

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Počet stran výsledku

8

Strana od-do

83-90

Název nakladatele

Brno University of Technology

Místo vydání

Brno

Místo konání akce

Praha

Datum konání akce

6. 10. 2003

Typ akce podle státní příslušnosti

CST - Celostátní akce

Kód UT WoS článku

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