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

Institut for Elektro- og Computerteknologi - Electronics and Photonics - Herning

Publikation: Bog/antologi/afhandling/rapport › Ph.d.-afhandling

Abstract

Emnet i denne PhD afhandling er overvågning af smøretilstanden i fedtsmurte
kuglelejer ved brug af ultralyd. Målet har været at kunne detektere hvornår
smørefilmen imellem kugler og løbebaner brydes og friktion og slid øges, ligeledes at
kunne udføre eksperimenter hvor kvaliteten af smørefilmen kan kontrolleres.
For at kunne måle på kuglelejer under drift, med varierende smøreforhold er der udført eksperimenter med fedtsmurte kuglelejer under radial belastning, med varierende smøreforhold. De varierende smøreforhold er frembragt ved at justere omløbs hastighed samt temperatur i lejer, og herved viskositet på basisolien i den anvendte smørefedt. Efterfølgende er de optagne lydsignaler anvendt, sammen med statistiske beskrivere (features) til at træne algoritmer i at genkende manglende smøring.
I projektet er der ydermere udviklet elektronik til opsamling af akustiske signaler, i
form af en sensor-prototype, som anvendes i tre af de fire gennemførte eksperimenter.

Originalsprog	Engelsk

Forlag	Aarhus University
Antal sider	246
Status	Udgivet - feb. 2024

Emneord

smøring
tilstandsovervågning
ultralyd

Citationsformater

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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

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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

Emneord

Fingeraftryk

Citationsformater