Print Email Facebook Twitter A micromechanical fracture analysis to investigate the effect of healing particles on the overall mechanical response of a self-healing particulate composite Title A micromechanical fracture analysis to investigate the effect of healing particles on the overall mechanical response of a self-healing particulate composite Author Ponnusami, S.A. (University of Oxford) Krishnasamy, J. (TU Delft Aerospace Structures & Computational Mechanics) Turteltaub, S.R. (TU Delft Aerospace Structures & Computational Mechanics) van der Zwaag, S. (TU Delft Novel Aerospace Materials) Date 2019 Abstract A computational fracture analysis is conducted on a self-healing particulate composite employing a finite element model of an actual microstructure. The key objective is to quantify the effects of the actual morphology and the fracture properties of the healing particles on the overall mechanical behaviour of the (MoSi2) particle-dispersed Yttria Stabilised Zirconia (YSZ) composite. To simulate fracture, a cohesive zone approach is utilised whereby cohesive elements are embedded throughout the finite element mesh allowing for arbitrary crack initiation and propagation in the microstructure. The fracture behaviour in terms of the composite strength and the percentage of fractured particles is reported as a function of the mismatch in fracture properties between the healing particles and the matrix as well as a function of particle/matrix interface strength and fracture energy. The study can be used as a guiding tool for designing an extrinsic self-healing material and understanding the effect of the healing particles on the overall mechanical properties of the material. Subject cohesive elementsfracture mechanismfracture propertieshealing particlesself-healing materialthermal barrier coatings To reference this document use: http://resolver.tudelft.nl/uuid:54fca949-53d5-4bec-b9d6-545b6e3d0d65 DOI https://doi.org/10.1111/ffe.12929 ISSN 8756-758X Source Fatigue & Fracture of Engineering Materials and Structures, 42 (2), 533-545 Part of collection Institutional Repository Document type journal article Rights © 2019 S.A. Ponnusami, J. Krishnasamy, S.R. Turteltaub, S. van der Zwaag Files PDF Ponnusami_et_al_2019_Fati ... ctures.pdf 1.52 MB Close viewer /islandora/object/uuid:54fca949-53d5-4bec-b9d6-545b6e3d0d65/datastream/OBJ/view