Ultrasonic Measurement of Cylindrical Roller–Bearing Lubricant Film Distribution with Two Juxtaposed Transducers

Meng LiSchool of Mechanical Engineering, State Key Lab for Strength and Vibration of Mechanical Structures, Xi'an Jiaotong University, Xi'an, P. R. ChinaCorrespondence[email protected]

Heng LiuSchool of Mechanical Engineering, State Key Lab for Strength and Vibration of Mechanical Structures, Xi'an Jiaotong University, Xi'an, P. R. China

Cong XuSchool of Mechanical Engineering, State Key Lab for Strength and Vibration of Mechanical Structures, Xi'an Jiaotong University, Xi'an, P. R. China

Minqing JingSchool of Mechanical Engineering, State Key Lab for Strength and Vibration of Mechanical Structures, Xi'an Jiaotong University, Xi'an, P. R. China

Guihua DongSchool of Mechanical Engineering, State Key Lab for Strength and Vibration of Mechanical Structures, Xi'an Jiaotong University, Xi'an, P. R. China

ABSTRACT

This article describes the measurement of lubricant film thickness distribution in a roller bearing by using two juxtaposed transducers, which are excited by a new ultrasonic pulse receiver with a maximum pulse repetition rate (PRR) of 100 kHz. The experimental results demonstrate the feasibility and advantage of this method with high PRRs. The influence of rotating speed and radial load on the measured film thickness are shown to be consistent with the theoretical predictions. Skewing of the roller in the bearing is observed. A combined trigger signal is proposed to reduce the influence of the cyclical vibration of the rotor.

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Funding

The work described in this article was fully supported by a grant from the National Science Funds of China (No. 51175410).

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Ultrasonic Measurement of Cylindrical Roller–Bearing Lubricant Film Distribution with Two Juxtaposed Transducers

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Ultrasonic Measurement of Cylindrical Roller–Bearing Lubricant Film Distribution with Two Juxtaposed Transducers

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