PSI - Issue 42

C2 - Restricted

T. Vandellos et al. / Procedia Structural Integrity 42 (2022) 50–57 Author name / Structural Integrity Procedia 00 (2019) 000 – 000

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Fig. 8. Influence of the interfacial strength σ C on the strain of the most loaded element, in the CMC substrate, during the loading.

5. Conclusions This work aimed to study the behavior of a bonded joint between two woven oxide/oxide CMC plates with a four point bending test using both experimental and numerical analysis. A good correlation between the result of the modeling with the continuum damage model ODM and the experimental failure of the sample was demonstrated. Furthermore, a study of influence concerning the interface properties, between the CMC and the bond, has shown a strong effect of the interfacial strength, which modifies the compliance of the structure behavior. But, when the value of this strength is high enough, the experimental failure mechanism is correctly described. Using these results, design of aeronautic components could be realized. Nevertheless, others studies seem necessary. For instance, the influence concerning the geometry of the corner between the CMC and the bond on the prediction of the failure mechanisms. This kind of studies will be perform in the future works. Acknowledgements This work was supported under PRC MECACOMP, French research project co-funded by DGAC and SAFRAN Group, piloted by SAFRAN Group and involving SAFRAN Group, ONERA and CNRS. References Ben Ramdane C., 2014. Etude et modélisation du comportement mécanique de CMC oxyde/oxyde. PhD Thesis Université de Bordeaux. Campilho, R.D.S.G., 2017. Cohesive Zone Modelling for Static Applications, in: Campilho, R.D.S.G. (Ed.), Strength Prediction of Adhesively- Bonded Joints. CRC Press, pp. 122 – 160. Hemon E., 2013. Modèles multi-niveaux de prévision des durées de vie en fatigue des structures composites à matrice céramique pour usage en turbomachines aéronautiques. PhD Thesis Université Bordeaux I. Jacques, E., 2012. Assemblage de composites SiCf/SiC de fine épaisseur : recherche d’une composition de joint et d’un procédé associé. PhD Thesis Université Bordeaux. Marcin L., 2010. Modélisation du comportement, de l’endommagement et de la rupture de matériaux composites à renforts tissés pour le dimensionnement robuste de structures. PhD Thesis Université Bordeaux 1. Martin E., 2014. A finite approach for determining the fracture onset of a brazed SiC specimen. Procedia Materials Science 3, 129-134. Rakotoarisoa C., 2014. Prévision de la durée de vie en fatigue des composites à matrice organique tissés interlock. PhD Thesis Université de Technologie de Compiègne. Sally O., 2018. Fatigue lifetime modeling of oxide/oxide composites. Procedia Engineering 213, 797-803. Alfano, G., 2006. On the influence of the shape of the interface law on the application of cohesive-zone models. Compos. Sci. Technol. 66, 723 – 730. https://doi.org/10.1016/J.COMPSCITECH.2004.12.024