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Full-Text Articles in Engineering
Thermal Property Measurement Of Thin Fibers By Complementary Methods, Troy Robert Munro
Thermal Property Measurement Of Thin Fibers By Complementary Methods, Troy Robert Munro
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Thin fibers are prevalent in many engineering materials. Measuring how well heat transfers in such small fibers can be difficult to determine, and previous methods have led to erroneous results. This dissertation details three proposed methods to improve the measurement of the thermal conductivity, thermal diffusivity, and volumetric heat capacity of thin fibers. Of particular interest is natural and synthetic spider silks because previously published values of the natural silk thermal conductivity was similar to copper, an excellent thermal conductor.
The three methods developed are the improved transient electrothermal technique (which was redeveloped to include radiation and convection heat losses …
In-Pile Thermal Conductivity Measurement Methods For Nuclear Fuels, Brandon S. Fox
In-Pile Thermal Conductivity Measurement Methods For Nuclear Fuels, Brandon S. Fox
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Measuring nuclear fuel thermal conductivity in-pile can provide much needed data for understanding fuel performance during irradiation and yield thermophysical property data needed for simulation codes and fuel databases. The objective of this research is to develop and compare two in-pile thermal conductivity methods in a laboratory setting using surrogate fuel materials.
A steady-state radial heat flow method was investigated to understand its viability as an in-pile steady-state thermal conductivity technique. By using Joule heating to simulate volumetric heat generation within a surrogate fuel rod, thermal conductivity was measured with two thermocouples at different radial positions within the rod. Examinations …