Evaluation of fatigue resistance of laser welded high pressure vessels steel P355 considering fracture mechanics approach
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F25797000%3A_____%2F19%3AN0000031" target="_blank" >RIV/25797000:_____/19:N0000031 - isvavai.cz</a>
Result on the web
<a href="http://www.svum.cz" target="_blank" >http://www.svum.cz</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.4028/www.scientific.net/KEM.827.428" target="_blank" >10.4028/www.scientific.net/KEM.827.428</a>
Alternative languages
Result language
angličtina
Original language name
Evaluation of fatigue resistance of laser welded high pressure vessels steel P355 considering fracture mechanics approach
Original language description
Laser welding is an innovative technology of joining metallic materials. In comparison with conventional arc welding, it has numerous advantages, like high energy of laser beam and high effectiveness, very good reproducibility, possibilities of automation, low energy consumption etc. High pressure vessels and high pressure pipeline industry represent perspective new fields of application. However, since pressure vessels and pipelines are usually operated at conditions of repeated or cyclic loading, an acceptable resistance to fatigue loading of the welds has to be demonstrated. In this contribution, results of an experimental programme aimed at an evaluation of high-cycle fatigue resistance in and near laser welds of a P355 pressure vessel steel are presented and discussed. Particular attention is paid to evaluation of crack initiation mechanisms in connection to laser weld character and welding imperfections. The programme is completed by measurement of fatigue crack growth rates and threshold values in the weld. Results of high-cycle fatigue tests of some groups of specimens were characteristic by a considerable scatter. The reason of the scatter was found in welding defects in some parts of the welds. Fatigue results are discussed also from the viewpoint of fracture mechanics and threshold values of fatigue crack growth.
Czech name
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Czech description
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Classification
Type
D - Article in proceedings
CEP classification
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OECD FORD branch
20501 - Materials engineering
Result continuities
Project
<a href="/en/project/TH02010664" target="_blank" >TH02010664: Innovative methods of welding of high pressure devices using laser technologies</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
Key Engineering Materials
ISBN
978-303571586-6
ISSN
10139826
e-ISSN
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Number of pages
6
Pages from-to
428-433
Publisher name
Trans Tech Publications Ltd
Place of publication
Stafa-Zurich
Event location
Rhodes
Event date
Sep 16, 2019
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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