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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 used... read moreto 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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