Empirical Expression for Estimation of Thermal Characteristics of Materials Used for Thermal Protection

Alexei M. Essiptchouk; L.I. Charakhovski; W. Silva; G.P. Filho; Homero S. Maciel

doi:10.4028/www.scientific.net/DDF.297-301.15

Paper Titles

Preface

Committees

Surface Properties of 316L Austenitic Steel Improved by Simultaneous Diffusion of Titanium and Aluminium
p.1

Study of the Reactive Diffusion in the Presence of Dissolution of Copper in the Solder Melts
p.8

Empirical Expression for Estimation of Thermal Characteristics of Materials Used for Thermal Protection
p.15

The Study of Droplet Impact Behavior on Flat Surface with Different Surface Properties
p.19

Synthesis and Characterization of Ag Doped Hydroxylapatite via the Decomposition of EDTA Chelate
p.25

Thermo-Mechanical Materials Analysis
p.30

Desorption of Hydrogen from CeNi₃ Intermetallic Hydrides
p.35

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Empirical Expression for Estimation of Thermal Characteristics of Materials Used for Thermal Protection

Abstract:

A formula for quick calculation of thermal characteristics of materials used for thermal protection is proposed. The mode of heating of the sample external surface (subjected to thermal exposure) is approximated by two regions, which differ by corresponding boundary conditions on the heating surface: T_f=cτ (linear growing with time) and T_f=const (with permanent temperature of destruction). That approximation permits to obtain an analytical solution in integral form. In order to simplify and accelerate data treatment, a simple empirical formula is proposed. A contribution of each thermal region is proportional to the regime duration. A good agreement with an analytical solution is shown.