Artificial composite stone design and production for the defense industry

Defense, which means resisting the attack and defending, is the activities carried out to protect against other states for the continuity of the sovereignty of a state in the national sense. The defense industry is a sector that includes the industrial business environment in general, in connection with the production of defense equipment and services deemed necessary for national security. Significant advances in military technologies have accelerated the transition to the modern defense industry. Some projects demanded by governments and developed by companies in the defense industry have to work for a long time in harsh environmental conditions. In this thesis, it is aimed to design and manufacture materials with reduced density and improved physico-mechanical properties. With the developed material, stone-like storage containers or stone-like exterior surfaces can be made for projects of different sizes that are planned to be used in the defense industry. The developed material is expected to be resistant to harsh environmental conditions, and it is also intended to be low distinguishable from the environment in mountainous or stony environments, since the external appearance of the materials is similar to stone. In this way, stone-like sensors left in the environment, equipment containers, equipment, etc. It is planned to reduce the detectability of the materials coated with this material and its design, with low distinguishability from the environment. Experimental samples were produced by adding reinforcement elements in different proportions. Samples were produced by adding 200 micron glass powder, 3.2 mm clipped glass fiber, 6mm clipped glass fiber, 6mm clipped balat fiber, 12mm clipped basalt fibers into 30% and 25% resin in two different mixture ratios as reinforcement materials. The produced samples were then tested for uniaxial compressive strength, Determination of Appearance Change by Open Air Effect, water absorption test under atmospheric pressure and wide disc abrasion tests. Then, the images were taken by looking at the materials under the optical lens with lenses with different zooming capacities. The results were compared with the basalt natural stone found in the region. In the light of the data obtained, it was observed that the compressive strength increased by mixing the limestone with unsaturated polyester resin. With the inclusion of reinforcement materials in the mixture, the compressive strength of some mixtures increased more than 2 times. When compared with basalt stone, artificial composite materials made with limestone showed higher performance. In the results obtained in the water absorption experiments, it gave values much lower than both basalt stone and limestone.