TERMIUM Plus^®

Fiche 1,  Justifications,  Anglais

Record number: 1, Textual support number: 1 CONT

In a system undergoing vibration, a mode of vibration designates the characteristic pattern of nodes and antinodes assumed by the system in which the motion of every particle, for a particular frequency, is simple harmonic(for linear systems) or has corresponding decay patterns.  1, fiche 1, Anglais, - mode%20of%20vibration

Record number: 1, Textual support number: 1 OBS

Two or more modes may exist concurrently in a multi-degree-of-freedom system.  1, fiche 1, Anglais, - mode%20of%20vibration

Fiche 1,  Justifications,  Français

Record number: 1, Textual support number: 1 CONT

Dans un système en vibration, un mode de vibration indique la disposition caractéristique des nœuds et des ventres accusée par le système lorsque les mouvements de chacune de ses parties élémentaires, pour une fréquence donnée, sont harmoniques (cas des systèmes linéaires) ou présentent des types de décroissance correspondants.  1, fiche 1, Français, - mode%20de%20vibration

Record number: 1, Textual support number: 2 CONT

Dans un système à plusieurs degrés de liberté, il peut exister simultanément deux ou plusieurs modes de vibration.  1, fiche 1, Français, - mode%20de%20vibration

Fiche 1,  Justifications,  Espagnol

Fiche 2,  Justifications,  Anglais

Record number: 2, Textual support number: 1 DEF

Intensification of sound by sympathetic vibration, resulting in harmonic partials, or overtones.  1, fiche 2, Anglais, - resonance

Fiche 2,  Justifications,  Français

Record number: 2, Textual support number: 1 DEF

[...] amplification des sons dans certains milieux sonores.  1, fiche 2, Français, - r%C3%A9sonance

Fiche 2,  Justifications,  Espagnol

Record number: 2, Textual support number: 1 CONT

Los instrumentos de cuerda amplifican los sonidos por resonancia de su caja de madera, y también interviene la resonancia en la acústica de las salas de concierto y de espectáculos.  1, fiche 2, Espagnol, - resonancia

Fiche 3,  Justifications,  Anglais

Record number: 3, Textual support number: 1 CONT

Deterministic : A type of signal whose spectrum consists of a collection of discrete components, as opposed to a random signal, whose spectrum is spread out or "smeared" in frequency. Some deterministic signals are periodic and their spectra consist of harmonic series. Vibration signatures of machines are in general deterministic, containing one or more harmonic series, but they always have non-deterministic components, such as background noise.  2, fiche 3, Anglais, - deterministic%20signal

Fiche 3,  Justifications,  Français

Fiche 3,  Justifications,  Espagnol

Fiche 4,  Justifications,  Anglais

Record number: 4, Textual support number: 1 OBS

Deterministic : A type of signal whose spectrum consists of a collection of discrete components, as opposed to a random signal, whose spectrum is spread out or "smeared" in frequency. Some deterministic signals are periodic, and their spectra consist of harmonic series. Vibration signatures of machines are in general deterministic, containing one or more harmonic series, but they always have non-deterministic components, such as background noise.  2, fiche 4, Anglais, - deterministic%20signal%20processing

Fiche 4,  Justifications,  Français

Fiche 4,  Justifications,  Espagnol

Fiche 5,  Justifications,  Anglais

Record number: 5, Textual support number: 1 CONT

... for a mechanically dithered RLG [ring laser gyro], non-linearities(sidebands) appear in the input-output scale factor curve for an input rotation rate which is a harmonic of the dither frequency... There are two disadvantages to dithering. One is that the rotation rate periodically passes through zero where lock-in occurs. This results in a "random walk" angular position error. The other is that the vibration of the gyro body may affect other components or the gyro may be affected by other vibration sources. The laser gyro need not be mechanically dithered. The same result may be achieved by optical devices.  1, fiche 5, Anglais, - mechanically%20dithered

Record number: 5, Textual support number: 1 OBS

dither: To periodically tilt from side to side.  2, fiche 5, Anglais, - mechanically%20dithered

Fiche 5,  Justifications,  Français

Fiche 5,  Justifications,  Espagnol

Fiche 6,  Justifications,  Anglais

Record number: 6, Textual support number: 1 CONT

... for a mechanically dithered RLG [ring laser gyro], non-linearities(sidebands) appear in the input-output scale factor curve for an input rotation rate which is a harmonic of the dither frequency... There are two disadvantages to dithering. One is that the rotation rate periodically passes through zero where lock-in occurs. This results in a "random walk" angular position error. The other is that the vibration of the gyro body may affect other components or the gyro may be affected by other vibration sources. The laser gyro need not be mechanically dithered. The same result may be achieved by optical devices.  1, fiche 6, Anglais, - mechanically%20dithered%20RLG

Record number: 6, Textual support number: 1 OBS

dither: To periodically tilt from side to side.  4, fiche 6, Anglais, - mechanically%20dithered%20RLG

Fiche 6,  Justifications,  Français

Fiche 6,  Justifications,  Espagnol

Fiche 7,  Justifications,  Anglais

Record number: 7, Textual support number: 1 DEF

The speed at which natural vibration, along with harmonic vibration, combines with power impulses to cause damaging shock waves to an engine.  1, fiche 7, Anglais, - critical%20speed

Fiche 7,  Justifications,  Français

Fiche 7,  Justifications,  Espagnol

Fiche 8,  Justifications,  Anglais

Record number: 8, Textual support number: 1 DEF

A periodic vibration that is sinusoidal function of the independent variable.  1, fiche 8, Anglais, - simple%20harmonic%20vibration

Fiche 8,  Justifications,  Français

Record number: 8, Textual support number: 1 DEF

Vibration périodique qui est une fonction sinusoïdale de la variable indépendante.  1, fiche 8, Français, - vibration%20harmonique%20simple

Fiche 8,  Justifications,  Espagnol

Fiche 9,  Justifications,  Français

Fiche 9,  Justifications,  Espagnol

Fiche 10,  Justifications,  Anglais

Record number: 10, Textual support number: 1 OBS

to control torsional vibration... of the crankshaft [, devices called vibration dampers or harmonic balancers are used. ]  1, fiche 10, Anglais, - torsional%20vibration

Fiche 10,  Justifications,  Français

Record number: 10, Textual support number: 1 OBS

les -- résultent de l'élasticité du vilebrequin [, on combat cette vibration par le montage d'un amortisseur de vibrations à l'extrémité du vilebrequin.]  1, fiche 10, Français, - vibration%20torsionnelle

Fiche 10,  Justifications,  Espagnol