Electronic Theses and Dissertations

Date of Award


Document Type


Degree Name

M.S. in Engineering Science

First Advisor

Farhad Farzbod

Second Advisor

Yiwei Han

Third Advisor

Tyrus McCarty


University of Mississippi

Relational Format



Thermal cycling, a global threat that is increasingly becoming more real, is a stressing event that can drastically change material properties. Thermal cycling can be used for material strengthening and optimization, but more often than that, thermal cycling is a nuisance that weakens the integrity of structures and coatings. To understand and build better designs that resist the effects of thermal cycling, we look to nature. Though warm-blooded animals regulate their body temperatures within an exceptionally tight range, cold-blooded animals experience relatively extreme temperature fluctuations, and oftentimes, in less than a 5-hour time period. In other words, cold-blooded animals experience significant thermal cycling over the course of their lifetime, whereas warm-blooded animals experience very little or no thermal cycling (internally) over the course of their lifetimes. Through the use of resonant ultrasound spectroscopy, samples of bone from both cold-blooded and warm-blooded species were observed before and after a month-long thermal cycling subjugation. The resonant ultrasound spectroscopy analysis allowed the observation and quantification of any deviations in the elastic makeup of a given bone sample. Results suggested with high confidence that warm-blooded animals underwent significant changes in their elastic makeup as a result of thermal cycling, whereas cold-blooded animals showed either insignificant or no change in their elastic makeup.



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