A micromechanical fracture analysis to investigate the effect of healing particles on the overall mechanical response of a self‐healing particulate composite
| Autor: | Sergio Turteltaub, Jayaprakash Krishnasamy, Sybrand van der Zwaag, Sathiskumar A. Ponnusami |
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| Rok vydání: | 2018 |
| Předmět: |
self-healing material
Materials science Mechanical Engineering Composite number 0211 other engineering and technologies Fracture mechanics 02 engineering and technology Microstructure fracture mechanism cohesive elements Finite element method 020303 mechanical engineering & transports fracture properties 0203 mechanical engineering Mechanics of Materials healing particles Fracture (geology) Particle General Materials Science Cubic zirconia TJ thermal barrier coatings Composite material Self-healing material 021101 geological & geomatics engineering |
| Zdroj: | Fatigue & Fracture of Engineering Materials and Structures, 42(2) |
| ISSN: | 1460-2695 8756-758X |
| DOI: | 10.1111/ffe.12929 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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