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Record W4401632585 · doi:10.22215/etd/2023-16010

Industrial Scalable Rolling Element Bearing Diagnostic and Prognostic Modelling

2023· dissertation· en· W4401632585 on OpenAlexafffund
Hassan A. Mahmoud

Bibliographic record

Venuenot available
Typedissertation
Languageen
FieldEngineering
TopicGear and Bearing Dynamics Analysis
Canadian institutionsCarleton University
FundersNatural Sciences and Engineering Research Council of Canada
KeywordsBearing (navigation)EngineeringRolling-element bearingStructural engineeringMain bearingFinite element methodComponent (thermodynamics)Roller bearingMechanical engineeringComputer scienceVibrationArtificial intelligenceLubrication

Abstract

fetched live from OpenAlex

Rolling element bearings are a critical component in nearly any rotating system.They operate at significant loads and speeds and must withstand various forms of harsh environmental factors.Due to this, they can be prone to rolling contact fatigue failure, especially in industrial applications such as wind turbines and both commercial and military aircraft.The following thesis extends published diagnostic models for bearing condition through inline wear debris sensors through experimental observations and a physical understanding of the bearing degradation mechanics.This diagnostic classification model is scalable to bearings of other sizes as its predecessors, with considerations for differently sized inline wear debris sensors.Furthermore, this diagnostic model is then combined with particle filters and mathematical representations of the bearing degradation curve to estimate the remaining useful life of the bearing, with consideration for both the bearing load and speed.

Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.

How this classification was reachedexpand

Full frame distilled prediction

Teacher imitation

Not calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.

metaresearch head score (Codex)0.000
metaresearch head score (Gemma)0.000
Version: codex-gemma-dda1882f352aValidation status: machine_predicted_unvalidated
Candidate categoriesMeta-epidemiology (narrow)
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Simulation or modeling · Consensus signal: Simulation or modeling
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.006
Threshold uncertainty score1.000

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0000.000
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0000.000
Science and technology studies0.0000.000
Scholarly communication0.0000.000
Open science0.0000.000
Research integrity0.0000.000
Insufficient payload (model declined to judge)0.0000.000

Machine scores (provisional)

The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.

Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.

Opus teacher head0.021
GPT teacher head0.220
Teacher spread0.199 · how far apart the two teachers sit on this one work
Validation statusscore_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it

Classification

machine, unvalidated

Machine predicted; a candidate call from one teacher head, not a consensus.

Study designSimulation or modeling
Domainnot available
GenreEmpirical

How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".

Quick stats

Citations0
Published2023
Admission routes2
Has abstractyes

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