Detection of Lubrication Conditions in Ball Bearings Using Acoustic Ultrasound Signals

Morten Opprud Jakobsen

Detection of Lubrication Conditions in Ball Bearings Using Acoustic Ultrasound Signals

Department of Electrical and Computer Engineering - Electronics and Photonics - Herning

Research output: Book/anthology/dissertation/report › Ph.D. thesis

Abstract

The focus of this PhD dissertation is the systematic monitoring of lubrication states in
grease-lubricated ball bearings utilizing ultrasonic acoustic signals. The primary
objective has been to detect quality of lubrication film formation between the balls
and raceways, and also to suggest and conduct experiments where the quality of the
lubrication film can be controlled.
A set of experiments were designed and executed with ball bearings in operational
states under radial load, encompassing diverse lubrication conditions. These
conditions were achieved by altering the rotational speed and temperature within the
bearings, consequently impacting the viscosity of the base oil in the applied lubricating grease Subsequently, the acquired acoustic signals were used, together with statistical descriptors (features), to train algorithms adept at recognizing insufficient lubrication.
Additionally, the project involved the development of specialized electronics for the
acquisition of acoustic signals. A sensor prototype was engineered and utilized in three out of the four experiments conducted.

Original language	English

Publisher	Aarhus University
Number of pages	246
Publication status	Published - Feb 2024

Keywords

lubrication
condition monitoring
ultrasound

Cite this

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title = "Detection of Lubrication Conditions in Ball Bearings Using Acoustic Ultrasound Signals",

abstract = "The focus of this PhD dissertation is the systematic monitoring of lubrication states ingrease-lubricated ball bearings utilizing ultrasonic acoustic signals. The primaryobjective has been to detect quality of lubrication film formation between the ballsand raceways, and also to suggest and conduct experiments where the quality of thelubrication film can be controlled.A set of experiments were designed and executed with ball bearings in operationalstates under radial load, encompassing diverse lubrication conditions. Theseconditions were achieved by altering the rotational speed and temperature within thebearings, consequently impacting the viscosity of the base oil in the applied lubricating grease Subsequently, the acquired acoustic signals were used, together with statistical descriptors (features), to train algorithms adept at recognizing insufficient lubrication.Additionally, the project involved the development of specialized electronics for theacquisition of acoustic signals. A sensor prototype was engineered and utilized in three out of the four experiments conducted.",

keywords = "sm{\o}ring, tilstandsoverv{\aa}gning, ultralyd, lubrication, condition monitoring, ultrasound",

author = "Jakobsen, {Morten Opprud}",

year = "2024",

month = feb,

language = "English",

publisher = "Aarhus University",

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TY - BOOK

T1 - Detection of Lubrication Conditions in Ball Bearings Using Acoustic Ultrasound Signals

AU - Jakobsen, Morten Opprud

PY - 2024/2

Y1 - 2024/2

N2 - The focus of this PhD dissertation is the systematic monitoring of lubrication states ingrease-lubricated ball bearings utilizing ultrasonic acoustic signals. The primaryobjective has been to detect quality of lubrication film formation between the ballsand raceways, and also to suggest and conduct experiments where the quality of thelubrication film can be controlled.A set of experiments were designed and executed with ball bearings in operationalstates under radial load, encompassing diverse lubrication conditions. Theseconditions were achieved by altering the rotational speed and temperature within thebearings, consequently impacting the viscosity of the base oil in the applied lubricating grease Subsequently, the acquired acoustic signals were used, together with statistical descriptors (features), to train algorithms adept at recognizing insufficient lubrication.Additionally, the project involved the development of specialized electronics for theacquisition of acoustic signals. A sensor prototype was engineered and utilized in three out of the four experiments conducted.

AB - The focus of this PhD dissertation is the systematic monitoring of lubrication states ingrease-lubricated ball bearings utilizing ultrasonic acoustic signals. The primaryobjective has been to detect quality of lubrication film formation between the ballsand raceways, and also to suggest and conduct experiments where the quality of thelubrication film can be controlled.A set of experiments were designed and executed with ball bearings in operationalstates under radial load, encompassing diverse lubrication conditions. Theseconditions were achieved by altering the rotational speed and temperature within thebearings, consequently impacting the viscosity of the base oil in the applied lubricating grease Subsequently, the acquired acoustic signals were used, together with statistical descriptors (features), to train algorithms adept at recognizing insufficient lubrication.Additionally, the project involved the development of specialized electronics for theacquisition of acoustic signals. A sensor prototype was engineered and utilized in three out of the four experiments conducted.

KW - smøring

KW - tilstandsovervågning

KW - ultralyd

KW - lubrication

KW - condition monitoring

KW - ultrasound

M3 - Ph.D. thesis

BT - Detection of Lubrication Conditions in Ball Bearings Using Acoustic Ultrasound Signals

PB - Aarhus University

ER -

Detection of Lubrication Conditions in Ball Bearings Using Acoustic Ultrasound Signals

Abstract

Keywords

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