Fatigue of Laser-Welded Structures: Role of Residual Stress

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F25797000%3A_____%2F22%3AN0000027" target="_blank" >RIV/25797000:_____/22:N0000027 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/B9780128229446000268?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/B9780128229446000268?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/B978-0-12-822944-6.00026-8" target="_blank" >10.1016/B978-0-12-822944-6.00026-8</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Fatigue of Laser-Welded Structures: Role of Residual Stress

Popis výsledku v původním jazyce

Article explains the relationship between fatigue resistance, microstructure, mechanical properties and residual stresses of laser-welded structures. The fatigue of the laser welds, even of those containing the defects, was better than the fatigue of the arc-welded samples. As expected, the fatigue cracks of the samples were always initialized on the weld surface, where tensile residual stresses were highest. The fusion zone of welds is the most critical area for the potential surface crack initialization because of the singularity with strong changes of numerous material properties including surface tensile residual stresses. Nevertheless, an attempt to quantify the role of residual stresses in fatigue tests was self-contradictory. It was shown that the analysis of microstructural changes by X-ray diffraction (represented mainly by microstrains) indicated that this method could be a good indicator of future crack initialization and propagation.

Název v anglickém jazyce

Fatigue of Laser-Welded Structures: Role of Residual Stress

Popis výsledku anglicky

Article explains the relationship between fatigue resistance, microstructure, mechanical properties and residual stresses of laser-welded structures. The fatigue of the laser welds, even of those containing the defects, was better than the fatigue of the arc-welded samples. As expected, the fatigue cracks of the samples were always initialized on the weld surface, where tensile residual stresses were highest. The fusion zone of welds is the most critical area for the potential surface crack initialization because of the singularity with strong changes of numerous material properties including surface tensile residual stresses. Nevertheless, an attempt to quantify the role of residual stresses in fatigue tests was self-contradictory. It was shown that the analysis of microstructural changes by X-ray diffraction (represented mainly by microstrains) indicated that this method could be a good indicator of future crack initialization and propagation.

Druh

C - Kapitola v odborné knize

CEP obor

—

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)

Rok uplatnění

2022

Kód důvěrnosti údajů

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

Název knihy nebo sborníku

Materials Science and Materials Engineering

ISBN

9780128035818

Počet stran výsledku

36

Strana od-do

—

Počet stran knihy

1000

Název nakladatele

Elsevier

Místo vydání

Amsterdam, Holandsko

Kód UT WoS kapitoly

—