thermal diffusivity उदाहरण वाक्य
उदाहरण वाक्य
- So the flash-pulse analysis does not only detect the presence of defects but also determine their depth under the surface if a thermal diffusivity of the sample is known.
- The thermal diffusivity of the base material plays a large role & mdash; if the diffusivity is high, the material cooling rate is high and the HAZ is relatively small.
- The "'laser flash analysis "'or "'laser flash method "'is used to measure thermal diffusivity of a multiplicity of different materials.
- In the energy balance this is replaced by thermal diffusivity \ alpha = { k / \ rho C _ P }, and by mass diffusivity D _ { AB } in the mass balance.
- A state-of-the-art laser flash apparatus ( "'LFA "') to measure thermal diffusivity over a broad temperature range, is shown on the right hand side.
- Needles 1 and 2 work in conjunction to measure salts in the regolith, heat the soil to measure thermal properties ( thermal conductivity, specific heat and thermal diffusivity ) of the regolith, and measure soil temperature.
- As a result the thermal diffusivity in most solids can be estimated as the speed of sound in the material ( typically a few km / s ) times the phonon mean free path ( typically several angstroms ).
- 11 . " INVESTIGATION OF THERMAL DIFFUSIVITY-MICROHARDNESS CORRELATION EXTENDED TO SURFACE-NITRURED STEEL USING BOUBAKER POLYNOMIALS EXPANSION ", Modern Physics Letters B, Volume : 22, Issue : 29 ( 2008 ) pp . 2893 2907
- where \ alpha is the thermal diffusivity and D is the mass diffusivity, \ lambda is the thermal conductivity, D _ { im } the mixture-averaged diffusion coefficient, and c _ p the specific heat capacity at constant pressure.
- Here, h is the thickness of the oceanic mantle lithosphere, \ kappa is the thermal diffusivity ( approximately 10 " 6 m 2 / s ) for silicate rocks, and t is the age of the given part of the lithosphere.