Design of the Face/Core Interface for Improved Fracture Resistance

Christian Lundsgaard-Larsen, Christian Berggreen, Leif A. Carlsson

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


    This study investigates the face/core fracture behavior of sandwich specimens with different designs. The traditional interface with a quadraxial mat directly adhered to the foam core is compared to interfaces where an additional mat with randomly oriented fibers is inserted between core and face. The extra mat affects the crack propagation path in the sandwich specimen, and makes it more likely for the crack to propagate at or near the interface, instead of kinking into the laminate or core. Further, the extra mat acts as a source for fiber bridging, and hereby the fracture resistance is increased as bridging fibers shield the crack tip from the loading. Results show that the increase in fracture resistance due to fiber bridging is significant. Cohesive laws regarding cracking of sandwich interfaces are extracted.
    Original languageEnglish
    Title of host publicationProceedings of the 8th INTERNATIONAL CONFERENCE ON SANDWICH STRUCTURES
    Number of pages1231
    Place of PublicationPorto, Portugal
    PublisherPublindústria, Produção de Comunicação, Lda.
    Publication date2008
    Publication statusPublished - 2008
    Event8th International Conference on Sandwich Structures - Porto, Portugal
    Duration: 6 May 20088 May 2008
    Conference number: 8


    Conference8th International Conference on Sandwich Structures
    Internet address


    Dive into the research topics of 'Design of the Face/Core Interface for Improved Fracture Resistance'. Together they form a unique fingerprint.

    Cite this