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Measurement Of Mechanical Vibrations Or Ultrasonic Waves
(AREA)
Abstract
Resonance method for measurement of logarithmic decrement of vibrations is in excitation with vibration of support device of resonance vibrations in sample with free ends and determination of logarithmic decrement of vibrations by ratio of amplitudes of the end of sample and support device, according to the utility model sample and elements of resonance installation are used as links of back coupling and equivalent electro-mechanical oscillatory circuit of Johnson generator that sets frequency of vibrations, one controls amplitude of vibrations of support for support of given amplitude of vibrations of free end of sample with measurement of amplitude of vibrations of the support.
UAU200907892U2009-07-272009-07-27Resonance method for measurement of logarithmic decrement of vibrations
UA46610U
(en)