Mode mixity for the fracture toughness obtained by climbing drum peel tests

K. M. Jespersen*, H. L. Toftegaard

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

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Abstract

Wind turbine blades include numerous interfaces, which are known to be critical regions for early failure. Thus, reliable testing of interfaces and a solid understanding of the tests used are of utmost importance. The climbing drum peel (CDP) test is a standardized test for characterization of adhesively bonded interfaces, which in literature has been referred to as a possible simple alternative to mode I double cantilever beam testing of composites. The current work uses finite element modeling of the CDP setup to show that it is actually a mixed mode test, and therefore one cannot use it to obtain the mode I fracture toughness. It can, however, be used to compare different interfaces, keeping in mind that the comparison is done for a mode mixity of approximately 40°, and that one adherend has to be thin (around 0.5mm).
Original languageEnglish
Title of host publication43rd Risoe International Symposium on Materials Science
Number of pages14
Volume1293
PublisherIOP Publishing
Publication date2023
Article number012032
DOIs
Publication statusPublished - 2023
Event43rd Risø International Symposium on Materials Science - Risø, Roskilde, Denmark
Duration: 4 Sept 20237 Sept 2023

Conference

Conference43rd Risø International Symposium on Materials Science
Country/TerritoryDenmark
CityRisø, Roskilde
Period04/09/202307/09/2023
SeriesIOP Conference Series: Materials Science and Engineering
ISSN1757-8981

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