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Crack-tip models by Irwin and Dugdale for hydroxyl-damaged crack-tip zones

Fett, T.; Schell, K. G.; Bucharsky, C.


Due to the hydroxyl generation, the silica network ahead of crack tips is damaged. The consequence is a damaged crack-tip zone showing a reduced Young’s modulus. The linear-elastic fracture mechanical treatment by application of stress intensity factors becomes doubtful especially for large zones. In this report, we use a description via well-known models of Elastic-Plastic Fracture Mechanics, namely, the models by Irwin and Dugdale.
As an application we compared the results with experimental observations on crack profiles from literature. The computed and observed Crack-Tip Opening Displacements (CTOD) were found to be in good agreement.

Volltext §
DOI: 10.5445/IR/1000137859
Veröffentlicht am 23.09.2021
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Angewandte Materialien – Keramische Werkstoffe und Technologien (IAM-KWT1)
Publikationstyp Forschungsbericht/Preprint
Publikationsmonat/-jahr 09.2021
Sprache Englisch
Identifikator ISSN: 2194-1629
KITopen-ID: 1000137859
Verlag Karlsruher Institut für Technologie (KIT)
Umfang VI, 11 S.
Serie KIT Scientific Working Papers ; 173
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