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The Ultrasonic Measurement for Object Vibration
2009This paper provides a kind of ultrasonic measurement for object vibration. Through the use of LabVIEW and ultrasonic sensors, the whole system would be simple and cost would be much lower. And then some key problems have been solved, such as the nearby wavelet produced by the ultrasonic sensor, the background noise and also the dead zone for ...
Li-Ping Zhang, Qiu Yu
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Vibration Measurement in Flight
SAE Technical Paper Series, 1937<div class="htmlview paragraph"><b>EQUIPMENT for measuring vibration in airplane structures and powerplants during actual flight is described in this paper. This development is the result of a cooperative research program carried out by the Bureau of Aeronautics of the U. S.
C. S. Draper +2 more
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Vibration Measurement by Interferometry
Nature, 1951IN the experimental investigation of the problem of isolating very sensitive measuring instruments from the effects of building vibration, it has been found desirable to measure amplitudes of the order of 0.25 µ (10−5 in.). Optical interference methods have been investigated and used by Thomas and Warren1, Osterberg2, Cortez3, Kennedy4 and other ...
C. F. BRUCE +2 more
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Device for measurement of vibrations
The Journal of the Acoustical Society of America, 1985A device for measurement of vibrations comprises a microwave generator whose energy is transmitted through an antenna system to an object being investigated, reflected therefrom and fed to a detector through an antenna system, said detector also receiving energy of high-frequency reference oscillations. The antenna system comprises an elliptical mirror,
Vladimir V. Kljuev +5 more
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Heterodyne vibration measurement
Measurement Techniques, 1993Analytic expressions are derived for the vibration amplitude and frequency in a heterodyne measurement method. The measurement accuracy is estimated.
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Abstract This chapter focuses on the design of measuring devices. The devices used to measure vibration typically consist of an electronic transducer with an interconnecting cable and an alternating current voltmeter. The working principle of each type of transducer is described in this chapter along with their important characteristics ...
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The Measurement of Torsional Vibrations
Proceedings of the Institution of Mechanical Engineers, 1942An electromagnetic torsional vibration pick-up unit, developed at Sunbury in the Research Laboratories of the Anglo-Iranian Oil Company is described, the output being shown on the screen of a cathode ray oscillograph to which the unit is connected through an integrating amplifier.
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Multi-scale and full-field vibration measurement via millimetre-wave sensing
Mechanical Systems and Signal Processing, 2022Songxu Li, Yuyong Xiong, Zhike Peng
exaly