Manyeto-reolojik malzemeler, manyetik alan etki ettiği durumlarda tersinir ve hızlı bir şekilde kontrol edilen malzemeler türündendir. Silikon kauçuk türleri, hazırlanması kolay ve oda sıcaklığında vulkanize olduğundan dolayı laboratuar ortamındaki çalışmalarda yaygın bir şekilde kullanılmaktadır.Çalışmada, Üç farklı silikon kauçuk türü ve manyetik alana duyarlı ferromanyetik toz kullanılarak MRE malzemeler üretilmiştir. MRE malzemeler, izotrop(homojen) ve anizotrop(hizalanmış) durumda elde edilmiştir. Elde edilen kompozit malzemeler tek eksenli basma test cihazında üç farklı test prosedürüne tabi tutularak test edilmiştir. Bu şekilde malzemelerin mekanik özellikleri ve manyeto-reolojik etkilerinin kıyaslanması amaçlanmıştır. Sonuç olarak anizotropik Sorta Clear40 malzemesi ile yapılan testlerde 0.430 T manyetik alan altında % 30 gerilme artışı varken, saf duruma göre ise bu oran % 50 olarak ortaya konmuştur. Aynı zamanda izotropik Sorta Clear40 ile Vario40 malzemesinin kıyası neticesinde % 5 şekil değişiminde yaklaşık % 325 oranında MR etki artışı olduğu ortaya konmuştur. Kauçuk türleri seçilirken mühendislik açıdan malzeme karakteristiğine en uygun olanlarının kullanılması gerektiği sonucuna varılmıştır.

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This article investigates compressive and energy absorption characteristics for composites obtained by filling stainless steel micro lattice materials, manufactured via the selective laser melting method, with three different rubbers, including room temperature vulcanization silicone, natural rubber, and neoprene rubber. At the stage of building the composites with natural and neoprene rubbers, an experimental setup was designed for these two rubbers to be infiltrated into lattice spaces under vulcanization temperatures and high pressures. The results showed that the composites with silicone and neoprene matrix had a quite similar response as well as a seriously enhanced energy absorbing capacity and plateau stresses, in comparison with the corresponding lattice structures, for especially small sized lattice components. Also, the compression tests of the composite with natural rubber matrix clearly show that there should be no large differences between the individual mechanical properties of each component in the composite, and, in this way, the contribution of each component on the mechanical behavior of composite should be guaranteed to provide the satisfying performance.

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Magneto-rheological (MR) materials can respond reversibly and quickly under the effect of an external magnetic field. MR materials contain micron-sized iron particles. These iron particles are typically dispersed in an elastomer or a liquid. These materials due to their properties constitute a kind of smart material in terms of engineering material. Such materials are used as isolators in various engineering applications, structures, and sound control subsystems. This study aimed to determine the mechanical properties for shear behavior of MR materials for under harmonic loading. Parameters such as matrix materials with different hardness values, powder types, magnetic field, frequency, and deformation were studied. The parameters related to the MR material itself were analyzed with the obtained data. The present study reveals that considering the sensitivity to magnetic field parameter, composite materials having the most suitable properties were produced with Shore 2 hardness value and SQ magnetic powder. It had been observed on increase about 200% at the rate of Shore A10 and A2 as a result of comparing the hardness scale. Also according to the powder rate while there was an increase on worth effect of relative MR, it is seen that the biggest increase had been in SQ powder with 199% worth. When looked some studies in literature, about comparing different hardness values such as matrix materials powder types etc. there aren’t any studies. The state of magnetic field thinks that features such as MR effect, Storage, and Loss modulus haven’t been examined yet.