A5072356006- Advanced ceramic materials synthesis
- Advanced materials and composites
- Numerical methods in engineering
- High-Velocity Impact and Material Behavior
- Thermal properties of materials
- High-Temperature Coating Behaviors
- Advanced Numerical Methods in Computational Mathematics
- Rock Mechanics and Modeling
- Nuclear materials and radiation effects
- Heat and Mass Transfer in Porous Media
- Advanced Surface Polishing Techniques
- Nuclear Materials and Properties
- Aluminum Alloys Composites Properties
- Composite Material Mechanics
- Electromagnetic Simulation and Numerical Methods
South China University of Technology
2017-2023
Hohai University
2013
Abstract The Orowan‐Petch relation is a famous model to describe the strength of polycrystalline ceramics covering wide range grain sizes. However, it becomes difficult explain trend when size decreases sub‐microscale or nanoscale. This because some microstructural parameters (such as size, boundary fracture energy, and defects) vary with different processing technologies, their coupling effects on mechanical properties are still unclear. In this study, finite element method (FEM) was...
A dual-scale model is proposed to study the effect of microstructure parameters (grain size and grain boundary fracture energy) on thermal shock damage mechanism an example alumina. At microscale, representative volume element (RVE) models generated by Voronoi tessellation are simulated obtain mechanical for macro models. macroscale, a coupled thermomechanical based finite–discrete method (FDEM) applied simulate crack nucleation propagation. Energy dissipation (ALLDMD) introduced investigate...
Abstract Fracture toughness is a basic property of ceramic materials, and it strongly influenced by their microstructures. However, the influences grain‐scale microstructural factors, including grain fracture energy, boundary size microstructure, on remain unclear. To investigate this, dual‐scale finite element method was developed. Models were established to assess mechanical properties, with an average 0.1–100 μm, different energies energies. Based macroscale three‐point bending model,...
Abstract In this work, the femtosecond laser was used to replace traditional indentation process ultra‐sharp defects on test bars for fracture toughness testing of 3 mol% yttria‐stabilized tetragonal zirconia polycrystals (3Y‐TZP) ceramic materials by a modified SCF method. Finite element (FE) analysis shows that positions maximum stress crack tip two types are almost same. Thus, is calculated based classical beam deflection theory comparing their intensity factors. Results show ratio...
Interphase structure characters such as single-layer interfacial thickness or number of multilayers may have a great influence on mechanical properties continuous fibers reinforced ceramic matrix composites (CFRCMCs). However, the determination optimal interphase is still unclear for complex microstructures CFRCMCs. In this study, novel Finite Element Method (FEM) -based numerical method considering mean scalar stiffness degradation and damage dissipation energy are proposed to...