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Experiment Materials and Equipments.
When crystal diameter is larger than the optical wavelength, most of the light would be the reflected and refracted, causing the opacity of all-ceramic materials reinforced; conversely, materials opaque would reduce.
Four ceramic substrate materials are commonly used in clinical, the permeability is good.
Part II: core and veneer materials.
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Then the stress value is taken as basic unknown parameter to solve these equations, the distribution of materials damage field was also obtained.
Thus the paper lays a necessary foundation for research on materials damage evolution law.
Introduction The spherical cavity expansion model, which can explain the material deformation process very clearly, is widely used in material science, solid state physics, explosion mechanics and other subjects.
This shows that the larger the parameter n is, the more tough the material will be, so the materials are difficult to be destroyed, and vice versa.
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It can be used to process finish surface as mirror, to modify surfaces of molds and dies, to machine insulating materials etc. [1].
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River sand is a natural aggregate material readily available with less silt and organic materials [6].
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The analysis objects had extended from elastic material to plastic, viscoelastic, visco-plastic and composite materials.
Different materials and structures were chosen to improve the rigidity and strength for the spectrometer.
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Ibn Sina, Agdal Rabat, Morocco alhoucineboutahar@gmail.com, bk.elbikri@ um5s.net.ma, crbenamar@emi.ac.ma Keywords: Non-linear vibrations, functionally graded materials, Annular plates.
Furthermore, functionally graded materials can be designed to achieve particular desired properties and the gradation in properties of the material can optimize stress distribution.
The continuity in the material properties of these new materials provides better mechanical behavior in comparison with the fiber-reinforced composites.
Woo et al. [12] provided an analytical solution for the nonlinear free vibration behavior of plates made of functionally graded materials.
[3] J.N.Reddy, Zhen-Qiang Cheng, Frequency correspondence between membranes and functionally graded spherical shallow shells of polygonal plan form, International Journal of Mechanical Sciences 44 (2002) 967–985