A study of thermal diffusivity of carbon-epoxy and glass-epoxy composites using the modified pulse method

Archives of Thermodynamics

Joanna Piotrowska-WoroniakBialystok Technical University, Department of Heat Engineering, Wiejska 45E, 15-333 Bialystok, PolandOther articles by this author:De Gruyter OnlineGoogle Scholar¹  Janusz Terpi?owskiCorresponding authorMilitary University of Technology, Laboratory of Thermophysical Measurements, Kaliskiego 2, 00-908 Warsaw, PolandEmailOther articles by this author:De Gruyter OnlineGoogle Scholar²  Julita RomanowskaMilitary University of Technology, Laboratory of Thermophysical Measurements, Kaliskiego 2, 00-908 Warsaw, PolandOther articles by this author:De Gruyter OnlineGoogle Scholar² 

[1]Bialystok Technical University, Department of Heat Engineering, Wiejska 45E, 15-333 Bialystok, Poland

[2]Military University of Technology, Laboratory of Thermophysical Measurements, Kaliskiego 2, 00-908 Warsaw, Poland

关键词: Keywords: Thermal diffusivity;    Pulse method;    Flash method;    Thermophysical properties;    Carbon-epoxy composite;    Glass-epoxy composite;    Epoxy resin;   

DOI  :  10.2478/aoter-2014-0024

学科分类：能源（综合）

来源: Polska Akademia Nauk * Oddzial w Gdansku, Instytut Maszyn Przeplywowych / Polish Academy of Sciences, Institute of Fluid-Flow Machinery

【 摘 要 】

Transient heat transfer is studied and compared in two planeparallel composite walls and one EPIDIAN 53 epoxy resin wall acting as a matrix for both composites. The first of the two walls is made of carbonepoxy composite; the other wall is made of glass-epoxy composite, both with comparable thickness of about 1 mm and the same number of carbon and glass fabric layers (four layers). The study was conducted for temperatures in the range of 20-120 °C. The results of the study of thermal diffusivity which characterizes the material as a heat conductor under transient conditions have a preliminary character. Three series of tests were conducted for each wall. Each series took about 24 h. The results from the three series were approximated using linear functions and were found between (0.7-1.35)×10−7m2/s. In the whole range of temperature variation, the thermal diffusivity values for carbon-epoxy composite are from 1.2 to 1.5 times higher than those for the other two materials with nearly the same thermal diffusivity characteristics.

【 授权许可】

Unknown