Date of Award
M.S. in Engineering Science
University of Mississippi
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.
Brewster, Parker Reed, "Evaluating the Effects of Thermal Cycling on Bone (Cold-Blooded vs Warm-Blooded)" (2022). Electronic Theses and Dissertations. 2354.
Available for download on Tuesday, October 31, 2023