TOWARDS A PROCESS FOR THE ASSESSMENT OF MIXED MODE I plus II FRACTURE TOUGHNESS

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27690%2F19%3A10244426" target="_blank" >RIV/61989100:27690/19:10244426 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
TOWARDS A PROCESS FOR THE ASSESSMENT OF MIXED MODE I plus II FRACTURE TOUGHNESS
Original language description
In fracture mechanics, a flaw behavior in pressure vessels is assessed with respect to the material fracture toughness. Fracture toughness which most Fitness-for-Service (FFS) codes relies on, only considers mode-I crack opening. However, in presence of tilted flaws, like quasi-laminar hydrogen flakes, this mode-I toughness may be too severe, and a mixed mode I+II fracture toughness seems to be more appropriate. In order to address the assessment of the fracture toughness curve, mixed mode I+II tests were performed by the authors on ferritic steel samples by adjusting the standard mode I CT specimen geometry to a geometry subjected to mixed mode I+II. Then, XFEM simulations of the mixed mode tests were performed in order to calculate the J-integral along the crack front. Based on tests and calculations results, the paper explains how the authors work towards proposing a method to measure the material fracture toughness in case of flaws subjected to mixed mode (I+II) loading.
Czech name
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Czech description
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Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
PROCEEDINGS OF THE ASME PRESSURE VESSELS AND PIPING CONFERENCE, 2018, VOL 1A
ISBN
978-0-7918-5158-6
ISSN
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e-ISSN
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Number of pages
10
Pages from-to
10
Publisher name
AMER SOC MECHANICAL ENGINEERS
Place of publication
New York
Event location
Prague
Event date
Jul 15, 2018
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
000460990800043

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