Effect of Initial Debond Crack Location on the Face/core Debond Fracture Toughness

Amilcar Quispitupa, Christian Berggreen

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This paper studies the effect of initial crack location on the face/core debond fracture toughness under different mixed mode loading conditions. The mixed mode loading at the crack tip is defined in terms of the mode-mixity. In order to achieve the desired initial debond crack location, a pre-cracking technique is developed, where the mode-mixity, number of cycles, crack increment and load level are accurately controlled. Results show that the debond fracture resistance of foam-cored sandwich specimens depends on parameters such as loading condition (mode-mixity), core and face properties, as well as initial debond crack location. Lower fracture toughness values were measured for specimens with the initial crack location in the face laminate.
Original languageEnglish
JournalE P J Web of Conferences
Pages (from-to)24004
Publication statusPublished - 2010
Event14th International Conference on Experimental Mechanics - Poitiers, France
Duration: 4 Jul 20109 Jul 2010
Conference number: 14


Conference14th International Conference on Experimental Mechanics

Bibliographical note

This is an Open Access article distributed under the terms of the Creative Commons Attribution-Noncommercial License 3.0, which permits unrestricted use, distribution, and reproduction in any noncommercial medium, provided the original work is properly cited.

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