MECHCOMP7 - 7th International Conference on Mechanics of Composites, Porto, Portugal, 1 - 03 September 2021, vol.1, no.1, pp.81
In this study, epoxy resin with
high-performance properties was used as a matrix material. As a reinforcement
material, spread tow carbon fiber produced in different weaving designs was
preferred instead of woven carbon fiber fabrics widely used. In addition, a
single-wall carbon nanotube was added to the resin. Hand lay-up and hot press
methods were used together as the production method. The mechanical, physical,
and thermal properties of the produced composite plates were investigated.
Furthermore, the mechanical
properties of sandwich panels obtained by adhering to the produced composite
panels on an aluminum honeycomb were also examined. Additionally, an
experimental study of the behavior of composite plate bonded aluminum honeycomb
core sandwiches under blast loads was carried out by using a shock tube setup.
Shock pressure was measured with high-precision piezoelectric pressure gauges.
The speed and acceleration of the shock pressure wave, the impulse, and
momentum values affecting the sandwich panels were calculated.
As a result of the mechanical tests,
it has been observed that the resistance of the obtained composite plates and
sandwich panels against bi-axial stresses is relatively high. Shock tube test
results were evaluated depending on the density and type of composites and by
comparing the deformations and damage modes of the sandwich panels.
Spread tow type carbon fibers can withstand
high tensions despite their low weight. For this reason, the spread tow carbon
fiber reinforced composites may become widespread in the aviation and space
industry, as they are lighter and more resistant.