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Impedance discontinuity
| Глоссарий по вычислительной технике |
Разрыв непрерывности полного сопротивления
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Discontinuity, английский
- Разрывность (течения, кривой)
- Разрыв (непрерывности); нарушение сплошности; перегиб кривой; разрезность {конструкции) о ~
- [stratigraphy] any interruption in sedimentation, whatever its cause or length, usually a manifestation of nondeposition and accompanying erosion; an unconformity. gg part 629 - glossary 629-24 (430-vi-nssh, 2008)
- An interruption in the normal physical structure or configuration of a part such as cracks, laps, seams, inclusions, porosity. a discontinuity may or may not affect the usefulness of a part. see defect.
- Interruption in the physical structure or configuration of a test object. after nondestructive testing, a discontinuity indication may be interpreted to be a defect. compare defect; indication. discontinuity, artificial: reference discontinuity such as hole, indentation, crack, groove, or notch introduced into a reference standard to provide accurately reproducible indications for determining test sensitivity levels.
- Interruption in the physical structure or configuration of a test object. after nondestructive testing, a discontinuity indication can be interpreted to be a defect.4,7 compare defect; indication. discontinuity, artificial: reference discontinuity such as hole, indentation, crack, groove or notch introduced into a reference standard to provide accurately reproducible indications for determining test sensitivity levels.4 discontinuity, inherent: material anomaly originating from solidification of cast metal. pipe and nonmetallic inclusions are the most common inherent discontinuity and can lead to other types of discontinuities in fabrication.2,5 discontinuity, primary processing: discontinuity produced from the hot or cold working of an ingot into forgings, rods, bars and other shapes.2,5 discontinuity, secondary processing: discontinuity produced during machining, grinding, heat treating, plating or other finishing operations.2,5 discontinuity, service induced: discontinuity caused by the intended use of the part.
- Intentional or unintentional interruption in the physical structure or configuration of a part.1,4 after nondestructive testing, unintentional discontinuities interpreted as detrimental in the host object may be called flaws or defects. compare defect, dislocation and indication.1 discontinuity, artificial: reference discontinuities such as holes, indentations, cracks, grooves or notches that are introduced into a reference standard to provide accurately reproducible indications for determining sensitivity levels.1 discontinuity, primary processing: in metals processing, a material anomaly produced from the hot or cold working of an ingot into forgings, rod and bar.1 discontinuity, service induced: material anomaly caused by the intended use of the part.1 display resolution, thermal: precision with which an instrument displays its assigned measurement parameter (temperature), usually expressed in degrees, tenths of degrees, hundredths of degrees and so forth.3
- Interruption in the physical structure or configuration of a test object. after nondestructive testing, a discontinuity indication may be interpreted as a defect. compare anomaly; defect; indication. drift (electronic): change in output reading of an instrument, usually due to temperature change.
- Interruption in the physical structure or configuration of a test object. after nondestructive testing, a discontinuity indication may be interpreted as a defect. compare anomaly; defect; indication. discontinuity, artificial: reference anomaly such as hole, indentation, crack, groove, or notch introduced into a reference standard to provide accurately reproducible indications for determining test sensitivity levels. see also known discontinuity standard. discontinuity, inherent: material anomaly originating from solidification of metal. pipe, banding, and nonmetallic inclusions are the most common inherent discontinuities and can lead to other types of discontinuities in fabrication. discontinuity, primary processing: discontinuity produced from the hot or cold working of an ingot into forgings, rods, bars, and other shapes. glossary d-e 497 discontinuity, secondary processing: discontinuity produced during machining, grinding, heat treating, plating, or other finishing operations. discontinuity, service induced: discontinuity caused by the intended use of the part. see also brittle crack propagation; creep; ductile crack propagation; fatigue crack propagation.
- Interruption in the physical structure or configuration of a test object. after nondestructive testing, a discontinuity indication can be interpreted to be a flaw or a defect.10 compare defect; indication.5,6 discontinuity, artificial: reference discontinuity such as hole, indentation, crack, groove, or notch introduced into a reference standard to provide accurately reproducible indications for determining sensitivity levels.4
- Interruption in the physical structure or configuration of a test object. after nondestructive testing, a discontinuity indication can be interpreted to be a flaw or a defect.10 compare defect; indication.
Discontinuity characterization, английский
The process of quantifying the size, shape, orientation, location, growth, or other properties of a discontinuity based on test data.
Discontinuity depth, английский
Discontinuity detection device, английский
Discontinuity development intensifying device, английский
Discontinuity lattice, английский
Discontinuity length, английский
Discontinuity of object magnetic particle nondestructive inspection, английский
Discontinuity opening width, английский
Discontinuity resolution, английский
Property of a test system that enables the separation of nearby indications in a test specimen.
Impedance, английский
- The total opposition to current flow in an a.c. electrical circuit. measured in ohms.
- The total opposition offered by a device to the flow of an alternating current. measured in ohms.
- A property of all metallic and electrical conductors that describes the total opposition
- Импеданс
- A property of all metallic and electrical conductors that describes the total opposition to current flow in an electrical circuit. resistance, inductance, capacitance and conductance have various influences on the impedance, depending on frequency, dielectric material around conductors, physical relationship between conductors and external factors. is often referred to with the letter z. it is measured in ohms, whose symbol is the greek letter omegaw.
- In alternating-current electric circuits, a quantitative measure of the opposition to the flow of current upon the application of voltage; measured in ohms.
- Полное сопротивление
- Волновое сопротивление проводника; импеданс
- The complex sum of resistance and reactance. the opposition or resistance of a circuit to the flow of alternating current.
- This term is used to refer to the total opposition to the flow of current represented by the combined effect of resistance, inductance and capacitance of a circuit.
Impedance, английский
Сопротивление среды передачи распространению электромагнитных волн. определяется геометрией проводников и диэлектрическими свойствами изоляции. измеряется в омах.
Impedance (acoustic), английский
Resistance to flow of ultrasonic energy in a medium. impedance is a product of particle velocity and material density.
Impedance (input or output), английский
- The input or output characteristic of a system component that determines the type of transmission cable to be used. the cable used must have the same characteristic impedance as the component. expressed in ohms. video distribution has standardized on 75-ohm coaxial and 124-ohm balanced cable.
- The input or output characteristic of a system component that determines the type of transmission cable to be used. expressed in ohms.
Impedance analysis, английский
In electromagnetic testing, an analytical technique that consists of correlating changes in the amplitude, phase, quadrature components, or all of these of a complex test signal voltage to the condition of the test specimen. impedance, acoustic: see acoustic impedance. impedance diagram, normalized: diagram in which the impedance of the probe in air is a reference value to which impedance values in other conditions are compared. usually the plotted data are (1) the measured reactance divided by the reactance of the coil in air versus (2) the measured resistance less the resistance in air divided by the coil reactance in air.
Impedance bond, английский
- A trackside mounted device, connected across running rails, which will allow a free flow of traction current between traction return rails and provide a connection for earthing the traction return rails and rail side structures without introducing any imbalance in the signalling track circuits.
- A connection box, usually mounted between the rails, which provides continuity of return current for traction power supply circuits where rails have been divided into insulated sections for signalling track circuit purposes.
Impedance bridge, английский
Impedance bump, английский
Скачок полного сопротивления
Impedance dispersion, английский
Impedance earthed (neutral) system, английский
Непрерывности, русский
Сопротивления, русский
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Cutting the loop, английский
Разрыв цепи обратной связи; размыкание контура; разрыв замкнутой логической цепи
Link disconnect, английский
Разрыв линии связи
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