Analysis on the growth of different shapes of mineral microcracks in microwave field
Journal Title: Frattura ed Integrità Strutturale - Year 2016, Vol 10, Issue 37
Abstract
Microwave heating-assisted ore grinding and crushing can effectively increase the dissociation energy of minerals and decrease energy consumption. Microcrack growth and distribution characteristics inside different shapes of ore particles, which are composed of galena and calcite under microwave irradiation, were analyzed using discrete element method to explore the effects of mineral shapes on microwave-assisted dissociation. Growth laws on the total number of microcracks, numbers of microcracks in galena and calcite, and boundary damage rate against irradiation time under high power and low power were studied. Research results demonstrated that mineral shape mainly affects the quantity of microcracks inside ores but does not their growth law.
Authors and Affiliations
Qin Like, Dai Jun
Keywords
Related Articles
- EP ID EP164638
- DOI 10.3221/IGF-ESIS.37.45
- Views 77
- Downloads 0
Surface crack growth subject to bending and biaxial tension-compression
Fatigue surface crack growth and the in-plane and out-of-plane constraint effects are studied through experiments and computations for aluminium alloy D16T. Subjects for studies are cruciform specimens under...
Relation between the plastic instability and fracture of tensile tested Cu-Sn alloys investigated with the application of acoustic emission technique
The work concerns the application of the acoustic emission (AE) method in testing the mechanical properties of continuously cast industrial tin bronze CuSn6P, which reveals tendencies to instable plastic flow ...
Fatigue crack propagation in turbine disks of EI698 superalloy
In-service fatigue cracking of turbine disks of EI698 superalloy is discussed based on crack growth analyses. In the bolt joint for disks to shaft connecting there is high level of stress-state, which directed to e...
A three-parameter model for fatigue crack growth data analysis
A three-parameters model for the interpolation of fatigue crack propagation data is proposed. It has been validated by a Literature data set obtained by testing 180 M(T) specimens under three different loading leve...
Comparative study of multiaxial fatigue methods applied to welded joints in marine structures
Marine structures are particularly prone to action of waves, winds and currents with stochastically varying composition, intensities and directions. Therefore, resultant stresses may cause multiaxial fatigue in&nb...