Investigation of residual stresses in high-cycle loaded laser steel welds

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F25797000%3A_____%2F19%3AN0000055" target="_blank" >RIV/25797000:_____/19:N0000055 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68407700:21340/19:00335788

Výsledek na webu

<a href="http://www.svum.cz" target="_blank" >http://www.svum.cz</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Investigation of residual stresses in high-cycle loaded laser steel welds

Popis výsledku v původním jazyce

The paper contains results of a comprehensive experimental programme aimed at an evaluation of residual stresses in and near laser welds of pressure vessels steels using X-ray diffraction technique. Generally, the manufacturing processes of a machine component introduce residual stresses that have an important and may have even essential influence on their behaviour during service life. The goal of this contribution was to find the influence of high-cycle loading on the stresseś relaxation in and near the welds. It has been found that the surface residual stress state is not the most important factor, either positive or negative, but the fatigue life more or less depends on the specific situation and condition of the materials and welds. On the other hand, the fatigue loading test caused the reduction of microdeformation values. The analysis of microstructure changes by X-ray diffraction could be an indicator of the future cracks initialization and their propagation.

Název v anglickém jazyce

Investigation of residual stresses in high-cycle loaded laser steel welds

Popis výsledku anglicky

The paper contains results of a comprehensive experimental programme aimed at an evaluation of residual stresses in and near laser welds of pressure vessels steels using X-ray diffraction technique. Generally, the manufacturing processes of a machine component introduce residual stresses that have an important and may have even essential influence on their behaviour during service life. The goal of this contribution was to find the influence of high-cycle loading on the stresseś relaxation in and near the welds. It has been found that the surface residual stress state is not the most important factor, either positive or negative, but the fatigue life more or less depends on the specific situation and condition of the materials and welds. On the other hand, the fatigue loading test caused the reduction of microdeformation values. The analysis of microstructure changes by X-ray diffraction could be an indicator of the future cracks initialization and their propagation.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

20501 - Materials engineering

Projekt

<a href="/cs/project/TH02010664" target="_blank" >TH02010664: Inovativní metody svařování vysokotlakých zařízení s využitím laserových technologií</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2019

Kód důvěrnosti údajů

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

Název statě ve sborníku

57th International Scientific Conference on Experimental Stress Analysis EAN 2019 - Conference Proceedings

ISBN

978-802145766-9

ISSN

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e-ISSN

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Počet stran výsledku

6

Strana od-do

24-29

Název nakladatele

Czech Society for Mechanics

Místo vydání

Brno

Místo konání akce

Luhačovice

Datum konání akce

3. 6. 2019

Typ akce podle státní příslušnosti

EUR - Evropská akce

Kód UT WoS článku

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