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Abstract:
Motivated by a need to develop a system optimized for either Differential Thermal
Analysis (DTA) or radiative Oscillation Calorimetry (ROC), a system was developed to
perform thermophysical property measurement based on radiation through the use of the
Tufts University High-Temperature Induction-Heated Reactor. System constraints, such as
conventional thermocouple measurement, where ... read moreused to develop a bench-top design for
high-temperature studies, 2600 °C, achieved by non-contact, infrared optical
pyrometry. A static analysis of optical pyrometry was conducted for a temperature range
of 500 °C to 1700 °C. Presented in this work are an analytical model to
evaluate the spectral emissivity of the molybdenum susceptor surface, and an
experimental correlation between the pyrometer spot size diameter and the strength of
signal. A dynamic analysis on the impact of a transiently heated susceptor on the sample
was done. Conductive losses to the gas environment of the reactor were experimentally
observed, and analytically validated.
Thesis
(M.S.)--Tufts University, 2015.
Submitted to the
Dept. of Mechanical Engineering.
Advisor: Douglas
Matson.
Committee: Luisa Chiesa, and Richard
Bradshaw.
Keyword: Mechanical
engineering.read less
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