Unsteady Vibrations

21 January 2024, 19:09

- non-steady vibrations, for which the magnitude of regulated parameters changes by at least a factor of 2 (by 6 dB) over an observation period of no less than 10 minutes with a time constant of 1 second, including:

a) time-varying vibrations, for which the magnitude of regulated parameters continuously changes over time;

b) intermittent vibrations, when human contact with vibration is interrupted, with the duration of intervals during which contact occurs being more than 1 second;

c) impulsive vibrations, consisting of one or several vibrational impacts (e.g., shocks), each lasting less than 1 second

Source: "SN 2.2.4/2.1.8.566-96. 2.2.4. Physical factors of the production environment. 2.1.8 physical factors of the surrounding natural environment. Production vibration, vibration in residential and public buildings. Sanitary norms" (approved by the Decree of the Russian State Committee for Sanitary and Epidemiological Surveillance dated October 31, 1996 No. 40)

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Морфология

Род

Понятие «непостоянные вибрации» женского рода.

Склонение и число

Падеж	Единственное число	Множественное число
Р	непостоянной вибрации	непостоянных вибраций
Д	непостоянной вибрации	непостоянным вибрациям
В	непостоянную вибрацию	непостоянные вибрации
Т	непостоянной вибрацией	непостоянными вибрациями
П	непостоянной вибрации	непостоянных вибрациях