TECHICAL Series MATHEMATICS • INFORMATICS • PHYSICS Series PHILOLOGY Series ECONOMIC SCIENCES Sereies EDUCATIONAL SCIENCES Series LAW AND SOCIAL SCIENCES Series
Thermal Dilatation Anisotropy in Glass/Fibre Reinforced Polymer Composites
(Universitatea Valahia din Târgovişte, B-dul Unirii, nr. 18, cod 130082, Romania e-mail: danungureanu2002@yahoo.com)
Vol LX • No. 2/2008
Gheorghe Ioniţă, Adrian Catangiu, Dan Ungureanu
Universitatea Valahia din Târgovişte, B-dul Unirii, nr. 18, cod 130082, Romania
e-mail: danungureanu2002@yahoo.com

 Keywords   Thermal Dilatation Anisotropy

 Abstract
The coefficients of thermal expansion, , of uni-directional and bi-directional glass reinforced composites are reported for the temperature range 20-150°C. Composite thermal expansion is shown to be highly anisotropic. An analytical procedure to predict laminate coefficient of thermal expansion based on micromechanics lamination theory from the literature is also included. Finally, the experimental results have been compared with the values obtained by using the model. It is shown that calculated values of thermal expansion are in close agreement with those measured.

 Rezumat
Coeficienţii de dilatare termică ai compozitelor unidirecţionale şi bidirecţionale armate cu fibre de sticlă au fost măsuraţi pentru domeniul de temperatură 20-150 0C. S-a remarcat anizotropia accentuată a dilatării termice a compozitului. Lucrarea cuprinde şi procedura analitică de estimare a coeficientului de dilatare termică, bazat pe teoria micromecanică, prezentată în literatura de specialitate. Valorile experimentale obţinute au fost comparate cu cele calculate şi s-a constatat o bună concordanţă între aestea.



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