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Permeability (mt)
| Глоссарий терминов по технологиям неразрушающего контроля (NDT) |
- The ease with which a magnetic field or flux can be set up in a magnetic circuit. it is not a constant value for a given material but is a ratio. at any given value of magnetizing force, permeability is b/h the ratio of flux density, b, to magnetizing force h.
- The ease with which a material can become magnetized. it is the relationship between field strength and the magnetizing force.
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Permeability, английский
- Perméabilité
- The ease with which a fluid flows through a porous material (wood) in response to pressure.
- A measure of the ease with which water penetrates a material.
- The relationship of flow per unit area to differential pressure across a filter medium.
- (of a membrane) the ability to allow some substances to pass through
- Проницаемость о ~ to heat теплопроницаемость ~ of soil проницаемость грунта air ~ воздухопроницаемость
- The state or quality of being penetrable by fluids or gases.
- The specific permeability, k (in m? ) is often referred to simply as
- The capacity of a solid substance (such as rock) to transmit a fluid. the degree of permeability depends on the number, size, and shape of the pores and/or fractures in the rock and their interconnections. it is measured by the time it takes a fluid of standard viscosity to move a given distance. the unit of permeability is the darcy.
- The capacity of a porous rock to transmit fluids.
- A measure of a material’s ability to align its magnetic domains in response to an applied magnetic field.
- A measure of the ease with which a fluid flows through the connecting pore spaces of rock or cement. the unit of measurement is the millidarcy.
Permeability, английский
Permeability coefficient, английский
Permeability creation, английский
The action of various engineering techniques to create fluid pathways within rock, such as fracture enhancement or creation by hydraulic pressure or imposed temperature differential.
Permeability of vacuum, английский
Mр
Permeability pathway, английский
Permeability resistance ratio, английский
Coefficient de perméabilité
Permeability resistance ratio, английский
Permeability test, английский
- A test to determine movement through concrete of water under pressure.
- A procedure usually followed to determine the watertightness of the foundation and abutment rocks, as one phase of foundation test drilling done before the construction of dams. the test is performed by placing packer assemblies in diamond-drill holes to segregate each successive different stratum or each 5-foot depth, and water is injected into the borehole space between the packers with a high-pressure pump. the volume of water escaping into the rocks is a measure of the permeability, indicating the amount of water that will seep through the foundation or abutment of the dam and whether or not the dam foundation should be grouted.
Magnetized, английский
A body is said to be magnetized when it possesses or can be made to possess that peculiar property whereby under certain circumstances it will naturally attract or repel a similar body in accordance with magnetic laws, example: drill rods become magnetized in use and will strongly attract other iron or steel articles.
Relationship, английский
- Отношение: соотношение; связь; взаимоотношение; взаимосвязь
- Отношение, степень родства
- A way in which someone or something is connected to another the incidence of the disease has a close relationship to the environment. he became withdrawn and broke off all relationships with his family.
- Зависимость, соотношение
- A connection between objects.
- A logical connection between entities.
- A smartart graphic layout type that includes layouts designed to illustrate connections.
- An association established between common fields (columns) in two tables. a relationship can be one-to-one, many-to-many, or one-to-many.
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Mobility (mt), английский
The ease with which magnetic particles move over the surface of a magnetized part and accumulate at a discontinuity exhibiting polarity.
Occupational dose, английский
The dose received by an individual in a restricted area or in the course of employment in which the individual’s assigned duties involve exposure to radiation. occupational dose does not include dose received from background radiation, as a patient from medical practices, from voluntary participation in medical research programs, or as a member of the general public.
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