High Channel Count Systems Architecture for Noise and Vibration Measurements

Abstract Because of difficulties of applying Transient Analysis in complex structure we use a set up of instruments by exploiting the experimental results of known structures of engines. Considering the combustion process as a dynamic excitation, we measure the noise and teh vibration on chosen points on a Spark Ingnition (S.I) engine and a Compression Ingnition engine (C.I). By doing that we come no conclusions concerning the combustion flow. In this experimetnal work appear the spectra of the noise and vibration measurements in connection with the R.P.M. fo the engine. From the comparison between the spectra, we extract important results concerning the chanage of the combustion flow in every different type of engine in several stages. The mesurements have been taken on a S.I. and C.I. engine in Special Engineering Laboratory.

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Noise and vibration measurements in a Viking military vehicle

Defence Technology ◽

10.1016/j.dt.2020.09.021 ◽

2020 ◽

Author(s):

Gurmail S. Paddan ◽

Marietta L.L. McIlraith

Keyword(s):

Vibration Measurements ◽

Noise And Vibration ◽

Military Vehicle

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Dynamic Behavior of Rolling Tires Under Different Operating Conditions

ASME 2012 Noise Control and Acoustics Division Conference ◽

10.1115/ncad2012-0910 ◽

2012 ◽

Cited By ~ 2

Author(s):

S. Vercammen ◽

C. González Díaz ◽

P. Kindt ◽

C. Thiry ◽

J. Middelberg ◽

...

Keyword(s):

Wave Propagation ◽

Modal Analysis ◽

Dynamic Behavior ◽

Operating Conditions ◽

Operational Modal Analysis ◽

Modal Parameters ◽

Road Noise ◽

Vibration Measurements ◽

Noise And Vibration ◽

Propagation Behavior

Although tire/road noise and tire vibration phenomena have been studied for decades, there are still some missing links in the process of accurately predicting and controlling the overall tire/road noise and vibration. An important missing link is represented by the effect of rolling on the dynamic behavior of a tire. Consequently, inside the European seventh framework program, an industry-academia partnership project, named TIRE-DYN, has been founded between KU Leuven, Goodyear and LMS International. By means of experimental and numerical analyses, the effects of rolling on the tire dynamic behavior are quantified. This paper presents the results of vibration measurements on a rotating tire with an embedded accelerometer. Modal parameters of the rolling tire are estimated from an operational modal analysis. In addition, the dispersion curves, which give detailed insight in the wave propagation behavior of a structure, are analyzed for the rolling tire. The goal of these analyses is to deepen the understanding on the influence of rolling on the tire dynamic behavior.

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