• HAMIT AKBULUT

Articles written in Bulletin of Materials Science

• Effect of thermal cycling on mechanical and thermal properties of basalt fibre-reinforced epoxy composites

Current study investigated the effect of thermal fatigue on mechanical and thermal properties of basalt fibrereinforced polymer (BFRP) composites. To this, basalt fibre textiles in $2/2$ twill pattern was used to fabricate BFRPcomposites. Thermal cycling experiment was carried out between $−$40 and $+$120$^{\circ}$C for 20, 40, 60, 80 and 120 cycles. Moreover, dynamic mechanical analyzer (DMA) was used to evaluate the effect of thermal cycling on thermal properties of BFRPs. Moreover, we compared the extracted viscoelastic characteristics, such as storage modulus, loss modulus and loss factor curves with original thermal-treated BFRP specimens. Based on the results, thermal cycling affected the characteristics of composites in the post-curing stage due to an increase in temperature. Finally, the effect of thermal cycling on waterabsorption properties of BFRP composites was examined by hydrophobicity test. The results showed that tensile strength, flexural modulus and ILSS values increased with the increase in the number of cycles up to 80 cycles. In other words, an increase in the number of cycles increased the hydrophobicity of BFRP composites by decreasing the contact angles. Finally, the mechanical properties of tested composites were significantly decreased when the number of cycles reached 120. This was due to the mismatch of thermal expansion coefficient and long crack formation in the structure of composite.

• Bulletin of Materials Science

Volume 43, 2020
All articles
Continuous Article Publishing mode

• Dr Shanti Swarup Bhatnagar for Science and Technology

Posted on October 12, 2020

Prof. Subi Jacob George — Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bengaluru
Chemical Sciences 2020