Experimental Study about the Propagation Characteristics of the Elastic Wave in Rod with Non-uniform Cross-section

doi:10.3901/JME.2020.04.258

Abstract

Abstract: Certain vibration signal of the rotating shaft can only be measured after transmitting through a component such as shaft when applying Condition Monitoring to a rotating machine. Frequency component of the elastic wave may be changed after propagation along the shaft itself, it's of critical necessary to study the characteristics of elastic wave propagating along the shaft. The elastic wave may be affected by the geometrical dimensions as well as the rotating speed. An experiment system based on the theoretical analysis is constructed to study the influence of the geometrical dimensions and rotating speed to the propagation characteristics of the elastic wave. A good agreement between the results of the experiment and the theoretical ones validates that the geometrical dimensions as well as the rotating speed does have an impact on the elastic wave propagation.

Key words: elastic wave, non-uniform shaft, transfer matrix, propagation characteristic, area ratio, rotating speed

CLC Number:

TH113

WEI Yimin, PAN Jun, YANG Shixi, CHEN Wenhua, ZHAO Zhiwei. Experimental Study about the Propagation Characteristics of the Elastic Wave in Rod with Non-uniform Cross-section[J]. Journal of Mechanical Engineering, 2020, 56(4): 258-264.

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