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Title: :  Optimal wavelengths for multi-spectral pyrometer used for heat treatments of steels
PaperId: :  9049
Published in:   International Journal Of Advance Research And Innovative Ideas In Education
Publisher:   IJARIIE
e-ISSN:   2395-4396
Volume/Issue:    Volume 4 Issue 5 2018
DUI:    16.0415/IJARIIE-9049
Licence: :   IJARIIE is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.

Author NameAuthor Institute
RATIANARIVO Paul EzekelEcole Doctorale en Sciences et Techniques de l’Ingénieur et de l’Innovation (ED-STII)
RAKOTOMIRAHO SoloniainaEcole Doctorale en Sciences et Techniques de l’Ingénieur et de l’Innovation (ED-STII)
RABEHERIMANANA Lyliane IrèneEcole Doctorale en Sciences et Techniques de l’Ingénieur et de l’Innovation (ED-STII)

Abstract

Electronics and Instrumentation Engineering
Multi spectral pyrometer, optimal wavelength, Infrared radiation, Temperature, Heat treatment of Steel
Optimum wavelengths for a pyrometer that can be used during the heat treatment of steels will be selected at the end of this article. Thanks to one of the physical properties of hot steels which has the possibility to radiate, it is possible to remotely measure its temperature on the surface. This temperature is proportional to the infrared or visible radiation emitted. The system is equipped with optical filters to control electromagnetic radiation and converge them to the appropriate detector. These optical filters are characterized according to the wavelengths used. The pyrometer we talked about will be a multi spectral pyrometer that is to say a pyrometer that uses several wavelengths. The number of optical path depends on the number of the wavelength used. Steel is one of the nonlinear emissivity metals, so the measurement of temperature requires a technique capable of overcoming this nonlinearity. A model called TNL.Tabc or Temperature by Non Linear model with T, a, b, and c the parameters to estimate will be used to select the optimal wavelengths. It will focus on minimizing a cost function by the least squares method. With this model we will sequentially choose the optimal wavelengths one after the other by inverse method. This method consists in fixing the temperature and finding the wavelength corresponding to the temperature set. The first wavelength obtained will be used to calculate the second. And this principle will be applied to find the third as well as the fourth. Optimum wavelengths will be obtained from five (5) selected temperatures in the temperature range of heat treatment of steels. Each of those wavelengths must pass the test of the various criteria to minimize the errors of measurements on the temperature. The power of the light energy obtained depends strongly on these optimal wavelengths. The wavelength groups that will meet these criteria will be the optimum wavelengths for a pyrometer for the heat treatment of steels.

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IJARIIE RATIANARIVO Paul Ezekel, RAKOTOMIRAHO Soloniaina, and RABEHERIMANANA Lyliane Irène. "Optimal wavelengths for multi-spectral pyrometer used for heat treatments of steels" International Journal Of Advance Research And Innovative Ideas In Education Volume 4 Issue 5 2018 Page 18-29
MLA RATIANARIVO Paul Ezekel, RAKOTOMIRAHO Soloniaina, and RABEHERIMANANA Lyliane Irène. "Optimal wavelengths for multi-spectral pyrometer used for heat treatments of steels." International Journal Of Advance Research And Innovative Ideas In Education 4.5(2018) : 18-29.
APA RATIANARIVO Paul Ezekel, RAKOTOMIRAHO Soloniaina, & RABEHERIMANANA Lyliane Irène. (2018). Optimal wavelengths for multi-spectral pyrometer used for heat treatments of steels. International Journal Of Advance Research And Innovative Ideas In Education, 4(5), 18-29.
Chicago RATIANARIVO Paul Ezekel, RAKOTOMIRAHO Soloniaina, and RABEHERIMANANA Lyliane Irène. "Optimal wavelengths for multi-spectral pyrometer used for heat treatments of steels." International Journal Of Advance Research And Innovative Ideas In Education 4, no. 5 (2018) : 18-29.
Oxford RATIANARIVO Paul Ezekel, RAKOTOMIRAHO Soloniaina, and RABEHERIMANANA Lyliane Irène. 'Optimal wavelengths for multi-spectral pyrometer used for heat treatments of steels', International Journal Of Advance Research And Innovative Ideas In Education, vol. 4, no. 5, 2018, p. 18-29. Available from IJARIIE, https://ijariie.com/AdminUploadPdf/Optimal_wavelengths_for_multi_spectral_pyrometer_used_for_heat_treatments_of_steels_ijariie9049.pdf (Accessed : 02 February 2020).
Harvard RATIANARIVO Paul Ezekel, RAKOTOMIRAHO Soloniaina, and RABEHERIMANANA Lyliane Irène. (2018) 'Optimal wavelengths for multi-spectral pyrometer used for heat treatments of steels', International Journal Of Advance Research And Innovative Ideas In Education, 4(5), pp. 18-29IJARIIE [Online]. Available at: https://ijariie.com/AdminUploadPdf/Optimal_wavelengths_for_multi_spectral_pyrometer_used_for_heat_treatments_of_steels_ijariie9049.pdf (Accessed : 02 February 2020)
IEEE RATIANARIVO Paul Ezekel, RAKOTOMIRAHO Soloniaina, and RABEHERIMANANA Lyliane Irène, "Optimal wavelengths for multi-spectral pyrometer used for heat treatments of steels," International Journal Of Advance Research And Innovative Ideas In Education, vol. 4, no. 5, pp. 18-29, Sep-Oct 2018. [Online]. Available: https://ijariie.com/AdminUploadPdf/Optimal_wavelengths_for_multi_spectral_pyrometer_used_for_heat_treatments_of_steels_ijariie9049.pdf [Accessed : 02 February 2020].
Turabian RATIANARIVO Paul Ezekel, RAKOTOMIRAHO Soloniaina, and RABEHERIMANANA Lyliane Irène. "Optimal wavelengths for multi-spectral pyrometer used for heat treatments of steels." International Journal Of Advance Research And Innovative Ideas In Education [Online]. volume 4 number 5 (02 February 2020).
Vancouver RATIANARIVO Paul Ezekel, RAKOTOMIRAHO Soloniaina, and RABEHERIMANANA Lyliane Irène. Optimal wavelengths for multi-spectral pyrometer used for heat treatments of steels. International Journal Of Advance Research And Innovative Ideas In Education [Internet]. 2018 [Cited : 02 February 2020]; 4(5) : 18-29. Available from: https://ijariie.com/AdminUploadPdf/Optimal_wavelengths_for_multi_spectral_pyrometer_used_for_heat_treatments_of_steels_ijariie9049.pdf
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