CENTRUM ROZVOJE STROJÍRENSKÉHO VÝZKUMU

The ac�vity of the professional measuring workplace is focused on research in the field of measurement, analysis of noise and vibra�on of machinery and equipment. The used measuring technology enables mul�channel measurements of dynamic variables and their evalua�on in the �me and frequency domains in real �me or in subsequent signal processing. Noise and vibra�on measurements can be supplemented by measuring other physical quan��es. Special acous�c spaces are available for accurate measurements.

Based on these measurements, measures to reduce noise and vibra�ons are proposed. When solving the problems, correla�on of noise and vibra�ons and their rela�onship to the modal and dynamic proper�es of the system are being analyzed.

MEASUREMENT AND ANALYSIS OF NOISE

Sound pressure level measurements

Sound intensity measurements

Sound power measurements

Measurements of material parameters (absorp�on, sound insula�on)

Noise frequency analysis (FFT, 1/n‐octave)

Mapping of noise fields using microphone arrays (acous�c holography, beam forming)

Graphical display of the sound field around an object

Iden�fica�on of the main noise sources,determina�on of par�al acous�c performances

Coopera�on to reduce the noise of machinery

MEASUREMENT AND ANALYSIS OF VIBRATIONS

Measuring overall vibra�on values

Measurement of �me histories and angular vibra�on waveforms (dependence on rota�on of a mechanism, e.g. main sha� of a machine)

Frequency and order analysis

Measurements of transients on a machine

Measurements of the transmission and a�enua�on characteris�cs of oscilla�ng systems

Experimental modal analysis(Natural frequency, natural wave shapes, damping)

Measurements of opera�onal wave shapes (machine vibra�on anima�on in steady or transient state)

Electromechanical excita�on of bodies and mechanisms using controlled vibrators

Coopera�on in reducing the vibra�on of machinery, design and implementa�on of vibra�on isola�ng elements

Vibrodiagnos�cs

HALF ANECHOIC CHAMBERInternal dimensions 12 × 8,5 × 5,5 mMeasurement of sound pressure levels from 20 dB(A)Measuring machines in a weight of up to 10 tSupply of technological media, flue gas exhaust

ECHO CHAMBERVolume of 224 m3Conforms to ISO 354Measured sample in a weight of up to 1 t

VISION UNLIMITED

Tel.: +420 485 301 111, Fax: +420 485 302 402E‐mail: vuts@vuts.cz, Web: www.vuts.cz

VÚTS, a.s.Svárovská 619, Liberec XI‐Růžodol I, 460 01 LiberecCZECH REPUBLIC