Re-analysis of the multistep degradation kinetic data of AVCOAT-like thermal protection system.

Autor:	Shilav, Ramin, Gottlieb, Levi, Dekel, Noa
Předmět:	ARRHENIUS equation COMPOSITE materials HIGH temperatures ENERGY consumption
Zdroj:	Journal of Thermal Analysis & Calorimetry; Apr2022, Vol. 147 Issue 8, p5057-5066, 10p
Abstrakt:	Ablative thermal protection systems are used for high temperature applications. Ablative response models use thermo-gravimetric analysis datasets of composite materials in order to extrapolate insulation degradation behavior at very high heating rates, as encountered in aerospace vehicles. In the present work, a kinetic multistep analysis procedure has been implemented on AVCOAT-like thermal protection system. Multistep mass loss datasets of the composite material have been modeled with Arrhenius equations to yield the overall activation energy using Kissinger and Vyazovkin equations, followed by a deconvolution procedure, which was carried out to distinguish each reaction and its kinetic values. A combined kinetic analysis method was implemented to verify the kinetic model for each reaction. Comparison between experiment and simulation of the resulting kinetic model showed an overall error of 1.5%. [ABSTRACT FROM AUTHOR]
Databáze:	Complementary Index
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