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Thermal diffusion
| Глоссарий по неразрушающему контролю в авиации |
Process by which thermal energy is transferred from hot or cold regions and finally is spread out. see also conduction, thermal.
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Diffus, немецкий
Diffusant amovible, французский
Diffusate, английский
Diffuse, английский
- Wines that smell and taste unstructured and unfocused are said to be diffuse. when red wines are served at too warm a temperature they often become diffuse.
- Рассеивать, распространять
- A многословный, расплывчатый (см. тж. pleonastic, prolix, wordy 1)
Diffuse alopecia, английский
Diffuse filter, английский
Фильтр "диффузия"
Diffuse glare, английский
Reflected light that does not produce a clearly discernible image, i.e., a hazy, bright light.
Diffuse illumination, английский
Lighting arranged so that an object is illuminated from a very large number of directions, rather than predominantly from a single direction.
Diffuse indication, английский
- Диффузная индикация (индикация при ультразвуковой дефектоскопии, не дающая четкого определения)
- In magnetic particle testing, particle cluster not clearly defined — for example, an indication from a subsurface discontinuity.
- Particle cluster not clearly defined — for example, indication from a subsurface discontinuity.
Diffuse indications (mt), английский
Indications of some sub-surface indications that are broad, fuzzy, feathery, and are not clearly defined.
Diffuse insolation, английский
- Sunlight received indirectly as a result of scattering due to clouds, fog, haze, dust, or other obstructions in the atmosphere. opposite of direct insolation.
- Sunlight received indirectly as a result of scattering due to clouds, fog,
Diffuse light, английский
Light which is random in direction. diffuse-porous wood a hardwood having pores of uniform size and distribution throughout each annual ring. diffuser 1. any device, object, or surface that scatters light (or sound) from a source. 2. for airconditioning systems,
Diffuse material, английский
A type of material that determines the color of the 3d object with direct light (white light) applied to it much like the paint on a wall.
Diffuse object beam, английский
Diffuse radiation, английский
- Radiation received from the sun after reflection and scattering by the atmosphere and ground.
- Radiation received from the sun after reflection and scattering by the
Diffuse reflectance, английский
Diffuse reflection, английский
- Takes place when different parts of a beam incident on a surface are reflected over a wide range of angles in accordance with lambert`s law. the intensity will fall off as the inverse of the square of the distance away from the surface, and also obey a cosine law of reflection.
- Reflection of light from a rough surface which scatters it in all directions. diffusing glass 311
- Диффузное отражение
- Scattered, incoherent reflections from rough surfaces.
- Scattered, incoherent reflections from rough surfaces. see also lambertian; matte.18 530 nondestructive testing overview
- Scattered, incoherent reflections from rough surfaces. see also lambertian; matte.
- Scattered, incoherent reflections from rough surfaces.7,21
Diffuse reflection (surface scatter), английский
The reflection from a rough surface that emerges at almost any angle
Diffuse reflection (ut), английский
Rough surface or associate interface reflection of ultrasonic waves from irregularities of the same order of magnitude or greater than the wavelength.
Diffuse reflection factor, английский
Diffuse reflector, английский
Surface that reflects a portion of the incident radiation in such a manner that the reflected radiation is equal in all directions. a mirror is not a diffuse reflector.3 diffusion, heat: see thermal diffusion. diffusion, mass: process by which molecules intermingle as a result of concentration gradients or thermal motion.1 spreading of a gas through other gases within a volume. diffusivity, thermal: see thermal diffusivity.
Conduction, английский
- Conduction
- The direct transfer of heat energy through a material.
- The transfer of energy through a solid without motion of the conducting solid as a whole. steady-state conduction calls if the temperature at each point is independent of time. unsteady or transient conduction situations changes with time (time dependant)
- The process of passing heat, sound or nervous impulses from one part of the body to another
- Проводимость; электрическая проводимость; электропроводность
- The transfer of heat energy through matter.
- The transfer of heat energy in materials (usually solids) via molecular scale vibrations and collision interactions.
- Heat transfer to another body or within a body by direct contact.
- Heat transfer occurring when more energetic particles collide with — and thus impart some of their heat energy to — adjacent less energetic (slower moving) particles. this action is passed on from one atom (or free electron) to the next in the direction of cooler regions. thus, heat always flows from a warmer to a cooler region.1 conductivity, thermal (k): material property defining the relative capability to carry heat by conduction in a static temperature gradient. conductivity varies slightly with temperature in solids and liquids and with temperature and pressure in gases. it is high for metals (copper has a k of 380 w·m–1·k–1) and low for gases and porous materials (concrete has a k of 1.0 w·m–1·k–1).3 682 infrared and thermal testing
- Heat transfer occurring when more energetic particles collide with — and thus impart some of their heat energy to — adjacent less energetic (slower moving) particles. this action is passed on from one atom (or free electron) to the next in the direction of cooler regions. thus, heat always flows from a warmer to a cooler region. compare convection; radiation. conductivity, electrical (?): ability of material to transmit electric current, measured in siemens per meter. reciprocal or inverse of resistivity ?: conductivity, thermal (k): material property defining the relative ability to carry heat by conduction in a static temperature gradient. conductivity varies slightly with temperature in solids and liquids and with temperature and pressure in gases. it is high for metals (copper has a k of 380 w·m–1·k–1) and low for gases and porous materials (concrete has a k of 1.0 w·m–1·k–1). compare capacity, thermal.
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Tone burst, английский
- Wave train consisting of several cycles of the same frequency.
- Wave train consisting of several cycles of the same frequency.7
Sweep length, английский
- Length of time or distance represented by the horizontal baseline on an a-scan. t tesla (t): si unit of measurement for magnetic flux density. 1 t = 1 wb/m2 = 10 000 g.
- Length of time or distance represented by the horizontal baseline on an a-scan.7,22 t
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