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ICHMT DIGITAL LIBRARY ONLINE

ISSN 961-91393-0-5

Individual price:

$246.00 (Must be sent to your home address)

You can order single issue or individual article. To purchase a single issue or an individual article as well as to view tables of contents and abstracts click on issue number.

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For Online Access

Year 1995

• 1Radiative Transfer I
Proceedings of the First International Symposium on Radiation Transfer - Kusadasi, Turkey, August, 1995

800 pages

Volume price - $192.00

INVERSE RADIATIVE ANALYSIS TO DETERMINE RADIATIVE PROPERTIES USING TEMPERATURE WAVE METHOD

Andrei V. Galaktionov
Institute for High Temperatures, Russian Academy of Sciences, 13/19 Izhorskaya, Moscow, 127412, Russia

ABSTRACT

A universal technique based on the temperature wave method is described for nondestructive determining the spectral radiative properties at high temperatures. The method requires pulse-periodic laser heating of a sample, and the measurements of thermal radiation on examined wavelengths, and the digital spectral analysis of laser power indicator and radiometer signals. The simplest case of non-scattering half-infinite medium is considered as an example. The absorption coefficient on examined wavelength as well as on laser wavelength are to be determined from the experiment. The sensitivity of the inverse problem to experimental errors is numerically examined. The inverse problem is based on the approximation of the measured frequency response function of the system by the theoretical one. The approximation is carried out using the non-linear least squares method. Optimal parameters of the pulse-periodic laser heating are evaluated. Sensitivities of several kinds of the temperature waves method are compared.