15 - Guest lectures
CHARACTERIZATION AND MODELLING OF CERAMIC MATRIX COMPOSITES SUBMITTED TO SEVERE THERMO-MECHANICAL LOADING
F. Laurin¹, Y. Delgado González, NLR, Netherlands; S. Reh, DLR, Germany; A. Russo, 4Università degli Studi della Campania , Italy; C. Footer, QINETIQ, United Kingdom; F. Roudolff¹; ¹ONERA, France
The standards recommended by the Advisory Council for Aeronautics Research in Europe (ACARE) in 2030 require the next generation of civil aircraft engines to reduce their fuel consumption and environmental footprint. Reducing the mass of structural components through the introduction of innovative composite materials, including in the hot parts of engines, is therefore a major industrial challenge. Ceramic Matrix Composites (CMC), due to their excellent mechanical properties up to over 1500°C, are therefore potential candidates for the manufacturing of some hot parts in future commercial aircraft engines. rnPerforming multi-instrumented mechanical tests at high temperature remain highly complex on CMC coupons, and current standards need to be improved in order to accurately determine damage and failure scenario, which are closely linked to the constituents and the architecture. Furthermore, tests carried out on structures at higher levels of the certification pyramid are not standardised and should be taken into account to better prepare tests such as L-angle specimens for instance.rnNevertheless, the efficient design of such composite parts cannot rely only on test campaigns, due to the cost of such materials, and therefore requires the use of damage and failure approaches, physically based but ensuring the requirements of a design office in aeronautics in terms of modelling complexity, robustness and computational costs. Moreover, efficient computational strategies still need to be developed in order to apply an advanced multiscale damage model specific to a CMC demonstrator.rnThere are very few studies focusing on thermo-mechanical testing and advanced damage simulation on large CMC demonstrators representative of industrial applications, due to the difficulties associated to manufacturing, testing and simulation of CMC structures.rnAs part of the GARTEUR SM GoR, the Exploratory Group EG-45 dedicated to the “Characterization and mo
DOI: 10.71945/icas2026_1004