A method for remote measurements of velocity for vibration analysis

Author

Papageorgiou, Ch ; Kosmatopoulos, C. ; Laopoulos, Th

Author_Institution

Lab. of Electron., Aristotelian Univ. of Thessaloniki, Greece

Volume

3

fYear

1999

fDate

1999

Firstpage

1491

Abstract

This paper describes a noncontact method based on ultrasonics for measuring remotely certain “parameters of motion” of a vibrating surface. The measurement technique is using a pair of 40 kHz air ultrasonic transducers to send a short burst and receive the reflected waveform. The main point is that the frequency of the received signal is measured and the analysis is based on the information about short term frequency variations. These variations of frequency of the received signal are the result of the Doppler effect, which means that by measuring the incoming frequency in an accurate and fast way, one can calculate then the instant value of the velocity of the vibrating surface

Keywords

Doppler effect; ultrasonic materials testing; ultrasonic measurement; ultrasonic transducers; vibration measurement; 40 kHz; Doppler effect; air ultrasonic transducers; measurement technique; parameters of motion; remote US measurements; short term frequency variations; vibrating surface; vibration analysis; Attenuation; Doppler effect; Frequency measurement; Measurement techniques; Optical surface waves; Signal analysis; Testing; Ultrasonic variables measurement; Velocity measurement; Vibration measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

Electronics, Circuits and Systems, 1999. Proceedings of ICECS '99. The 6th IEEE International Conference on

Conference_Location

Pafos

Print_ISBN

0-7803-5682-9

Type

conf

DOI

10.1109/ICECS.1999.814452

Filename

814452