Modeling the residual useful life of railroad bearing grease

Author

Thania Alejandra Martinez, The University of Texas Rio Grande Valley

Date of Award

12-2015

Document Type

Thesis

Degree Name

Master of Science (MS)

Department

Mechanical Engineering

First Advisor

Dr. Constantine M. Tarawneh

Second Advisor

Dr. Douglas H. Timmer

Third Advisor

Dr. Robert E. Jones

Abstract

Railroad bearing performance is often constrained by the life of its lubricant. The lubricant life is determined by tribomechanical processes that are present during bearing operation. No known physical models exist to predict the railroad bearing lubricant life. This thesis summarizes the efforts undertaken in the development of empirical models that can accurately predict the residual useful life of railroad bearing grease. Modeling techniques to be employed include regression, regression trees, and split plots. The grease samples used to populate this model come from healthy and faulty bearings that were run under different loads, speeds, and ambient conditions in a laboratory setting. Differential Scanning Calorimetry (DSC) values were used as indicators of the residual life of the grease after it has been in operation. This study was successful in developing empirical models which can be utilized to predict the residual life of railroad bearing grease for given operational parameters.

Comments

Copyright 2015 Thania Alejandra Martinez. All Rights Reserved.

https://www.proquest.com/dissertations-theses/modeling-residual-useful-life-railroad-bearing/docview/1771327357/se-2?accountid=7119

Recommended Citation

Martinez, Thania Alejandra, "Modeling the residual useful life of railroad bearing grease" (2015). Theses and Dissertations. 62.
https://scholarworks.utrgv.edu/etd/62