5 May 2017 Inverse determination of heat flux into a gun barrel using temperature sensors
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Abstract
A mathematical model is developed to describe the thermal response of a temperature sensor located within a gun barrel, which accounts for the time-constant of the sensor and a measurement bias. The model is inversely solved to estimate the total heat flux applied to the bore surface as well as the transient history of the applied heat flux for a given thermal response of a temperature sensor. A parametric study is conducted to determine the influence of sensor time-constant, sensor location within the gun barrel, and measurement bias on the accuracy of the estimated heat flux as applied to a 155mm gun barrel. It is found that the accuracy of the estimated heat flux improves as the time-constant of the sensor decreases, the sensor is located closer to the bore surface, and the measurement bias decreases. A regression model is provided to estimate that accuracy and it is shown how a typical thermocouple would perform at various locations through the thickness of the gun barrel.
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Jonathan A. Jablonski, Jonathan A. Jablonski, Melissa N. Jablonski, Melissa N. Jablonski, } "Inverse determination of heat flux into a gun barrel using temperature sensors", Proc. SPIE 10184, Sensors, and Command, Control, Communications, and Intelligence (C3I) Technologies for Homeland Security, Defense, and Law Enforcement Applications XVI, 101840Z (5 May 2017); doi: 10.1117/12.2267188; https://doi.org/10.1117/12.2267188
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