Analysis of the possibility of determining the internal structure of composite material by estimating its thermal diffusivity

• Autorzy: Kucypera S.

Identyfikatory

DOI

10.2478/aoter-2014-0001

• Języki publikacji: EN

Abstrakty

EN

The aim of this paper is analysis of the possibility of determining the internal structure of the fibrous composite material by estimating its thermal diffusivity. A thermal diffusivity of the composite material was determined by applying inverse heat conduction method and measurement data. The idea of the proposed method depends on measuring the timedependent temperature distribution at selected points of the sample and identification of the thermal diffusivity by solving a transient inverse heat conduction problem. The investigated system which was used for the identification of thermal parameters consists of two cylindrical samples, in which transient temperature field is forced by the electric heater located between them. The temperature response of the system is measured in the chosen point of sample. One dimensional discrete mathematical model of the transient heat conduction within the investigated sample has been formulated based on the control volume method. The optimal dynamic filtration method as solution of the inverse problem has been applied to identify unknown diffusivity of multi-layered fibrous composite material. Next using this thermal diffusivity of the composite material its internal structure was determined. The chosen results have been presented in the paper.

Słowa kluczowe

EN

mathematical model; direct problem; inverse heat conduction problem; composite material; test stand

PL

model matematyczny; zagadnienie proste; odwrotne przewodzenie ciepła; materiał kompozytowy; stanowisko badawcze

• Wydawca: Wydawnictwo Instytutu Maszyn Przepływowych PAN ; Komitet Termodynamiki i Spalania PAN
• Czasopismo: Archives of Thermodynamics
• Rocznik: 2014
• Tom: Vol. 35, no. 1
• Strony: 3--15
• Opis fizyczny: Bibliogr. 8 poz., il.

Twórcy

autor

Kucypera S.

• Silesian University of Technology, Institute of Thermal Technology, Konarskiego 22, 44-100 Gliwice, Poland

Bibliografia

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• [2] Beck J.V., Arnold K.: Parameter Estimation in Engineering and Science, Wiley, New York 1977.
• [3] Kucypera S.: Determination of thermophysical parameters of orthotropic materials based on the solution the inverse heat conduction problems. XIII Symposium on Heat and Mass Transfer, Koszalin-Darłówko 2007, Vol. 2, 633-Ő640 (in Polish).
• [4] Özisik M.N., Orlande H.R.: Inverse Heat Transfer. Taylor & Francis, New York 2000.
• [5] Scarpa F., Milano G.: Kalman smoothing technique applied to the inverse heat conduction problems. Numer. Heat Transfer B-Fund. 28(1995), 79–96.
• [6] Skorek J., Kucypera S.: Dynamic filtration based on the inverse approach for determination heat conductivity and specific heat of solids. In: Proc. 34th ASME National Heat Transfer Conf., Symposium on Inverse Thermal Problem, CD, Pittsburgh 2000.
• [7] Moultanovsky A.V, Rekada M.: Inverse heat conduction problem approach to identify the thermal characteristics of super-hard synthetic materials. Inverse Prob. Eng. 10(2002), 1, 19–39.
• [8] Mzali F., Alabouchi F., Nasrallah S. Petit D.: Optimal experiment design and thermo-physical characterisation of a plastically deformed solid. Inverse Problem. Design and Optimization Symposium, Miami, Floryda, April 2007, 16–28.