Theses and Dissertations - UTB/UTPA

Date of Award


Document Type


Degree Name

Master of Science (MS)


Mechanical Engineering

First Advisor

Dr. Constantine M. Tarawneh

Second Advisor

Dr. Arturo Fuentes

Third Advisor

Dr. Javier Kypuros


Catastrophic bearing failure is a major concern for the railroad industry because it can lead to costly train stoppages. Excessive heat buildup within the bearing is one of the main factors that can warn of impending failure. The work presented in this thesis is motivated by the need to understand the heat transfer paths to the bearing when wheel heating occurs. A series of experiments and finite element analyses were conducted in order to quantify the different heat transfer mechanisms, with emphasis on radiation. The results indicate that the effect of thermal radiation is minimal when the wheel tread temperature is at 135°C, does not exceed 24°C when the wheel is at 315°C, and is 39°C when the wheel is at 482°C.


Copyright 2010 Lariza A. Navarro. All Rights Reserved.

Granting Institution

University of Texas-Pan American