A comparative evaluation of flexural strength of composite resins on glass fibre reinforcement
International Journal of Development Research
A comparative evaluation of flexural strength of composite resins on glass fibre reinforcement
Received 27th October, 2018; Received in revised form 30th November, 2018; Accepted 25th December, 2018; Published online 30th January, 2019
Copyright © 2019, Dr. Poonam Singh and Dr. Braj Bhushan Mall. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Aim: To evaluated the effects of glass fibre layering on the flexural strength of hybrid and microfill composites. Methodology: A stainless steel mold of dimension (25x2x2 mm) was used to fabricate a total of 90 speimens of corresponding dimensions according to the groups-control and experimental groups. A 3-point bending test was carried out to assess the flexural strength. Load was applied on the specimens by using a universal testing machine, at crosshead speed of 1 mm/min. The fracture load was recorded in kilo Newton which then converted to mega Pascal. RESULT- Stastitical analysis was performed by using analysis of variance (ANOVA) and student ‘t’ test. Glass fibre reinforcement improved the flexural properties of the composite resin significantly (p<0.001). Placement of a layer of glass fibre at the bottom of the specimens significantly (p<0.001) resists tensile failure as compared to the placement in the middle of the specimens. CONCLUSION- Glass fibre reinforcement of the hybrid and microfill composites improves the flexural properties of the composite resin materials significantly.
