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Title page for ETD etd-12022005-084210


Type of Document Master's Thesis
Author Crim, Paul Richmond
URN etd-12022005-084210
Title Thermographic Phosphors as a Means of Estimating Heating Rate to Solve the Inverse Heat Conduction Problem
Degree Master of Science
Department Mechanical Engineering
Advisory Committee
Advisor Name Title
Greg Walker Committee Chair
Alvin Strauss Committee Member
Mark Stremler Committee Member
Keywords
  • heat flux
  • heating rate
  • thermographic phosphors
Date of Defense 2005-11-28
Availability unrestricted
Abstract
In search of a more accurate method of measuring heat flux,

a new approach to

the solution of the inverse heat conduction problem is examined. The inverse

heat conduction problem traditionally uses temperature measurements to

estimate boundary heat fluxes. Inverse problems are ill-posed, so small

errors inherent in the

temperature measurement are amplified in the solution. Research shows that

solutions for heat flux are more accurate with less error using heating rate

measurements rather than using temperature measurements. Because there

currently is no method of measuring heating rate, defined as the first time

derivative of temperature, the author proposes a

new method of heating rate determination using thermographic phosphors.

Thermographic phosphors are traditionally used

in non-contact thermometry applications under steady state conditions. The

aim of this thesis is to show that thermographic phosphors may be used to

measure both temperature and heating rate under transient thermal conditions.

Experimental results show that with a significant reduction of noise in the

data, this method has the potential for measuring heating

rate.

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