Investigation of gas permeability of fibrous composite material in a vacuum

2018 ◽  
Author(s):  
D. A. Kalinkin ◽  
O. V. Belova ◽  
R. O. Andreev
Keyword(s):  
Composite Material ◽  
Gas Permeability ◽  
Fibrous Composite ◽  
Fibrous Composite Material

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

2014 ◽  
Vol 35 (1) ◽  
pp. 3-15
Author(s):  
Stanisław Kucypera
Keyword(s):  
Composite Material ◽  
Heat Conduction ◽  
Thermal Diffusivity ◽  
Internal Structure ◽  
Fibrous Composite ◽  
Electric Heater ◽  
Transient Temperature ◽  
Inverse Heat Conduction ◽  
Filtration Method ◽  
Fibrous Composite Material

Abstract 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.

Fibrous Composite Material Based on Intermetallic Compound NiAl

MICC 90 ◽  
1991 ◽  
pp. 919-927
Author(s):  
Valentina I. Zhamnova ◽  
Lev M. Ustinov ◽  
Albina G. Vasilyeva ◽  
Aleksei V. Vorobyev
Keyword(s):  
Composite Material ◽  
Intermetallic Compound ◽  
Fibrous Composite ◽  
Fibrous Composite Material ◽  
Intermetallic Compound Nial
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