Akademik Veri Yönetim Sistemi
Anatolian Congresses-6th International Applied Sciences Congress, Van, Türkiye, 21 - 23 Mayıs 2021, cilt.1, ss.34
In this study, the production, artificial aging and low velocity impact tests of glass fiber
reinforced polymer matrix composites were carried out. In this context, glass fiber reinforced
composites were produced by using 8 layers of unidirectional glass fiber fabric with a total
thickness of 3 mm using vacuum infusion technique. The area density of the fabric used is 300
g / m2. Hexon brand hardener and epoxy resin were used. The prepared samples were cut in
dimensions of 100 x 100 mm and aged for 750 and 1500 hours in an air conditioning cabinet at
70 ° C and 85% humidity. Three different impacts at 10, 20, 30 J energy were applied to the
non-aged samples in the control group and the samples that were aged for 750, 1500 hours.
Impact tests were carried out using Fractovis plus brand device. Impact tests were conducted
using a 10 mm radius hemispherical tip. The striker tip used weighs 5,045 kg. Impact velocities
are 2, 2.82, 3.45 m / s for 10, 20, 30 J, respectively. According to contact force - time, contact
force - displacement and energy time curves obtained from the impact tests, the impact
resistance of the materials has been revealed. No puncture occurred at all three impact energies
in any of the composite samples. It has been revealed that the impact resistance of composite
specimens is negatively affected by the increase in aging time. The maximum contact forces
obtained as a result of the impact tests of samples that were not aged, aged 750 hours and 1500
hours, decreased with aging. Besides, there was no noticeable change in contact times. In
addition, the weights of the samples increased over time, according to the weight measurements
made evenly during aging, but this increase has a decreasing trend over time.