Scientists from UNN. Lobachevsky and the Institute of Applied Physics of the Russian Academy of Sciences have developed a stand to determine the elastic properties of carbon fiber plastics – composite materials used to create lightweight and durable products. The new method uses microwave radiation, allowing extremely precise measurements regardless of the state of the material’s surface. University representatives noted that the technology is especially important in the context of the growth of Russian polymer production and the replacement of foreign composites.
During the test, both longitudinal and transverse deformations of the material are measured. Transverse strain is recorded with a microwave interferometer and longitudinal strain is recorded with conventional strain gauges. Based on these data, a coefficient is calculated that allows evaluating the mechanical properties of carbon fiber reinforced plastic. The university emphasized that the technique does not lose its accuracy even if there is dust or defects on the surface of the samples.
According to Kirill Mineev, one of the authors of the development, carbon composites are increasingly in demand: they are used in the automotive, aerospace industries. He noted that carbon fiber-reinforced plastics are used in the creation of both small parts and large assemblies, and their properties directly affect the reliability of finished products. According to the researchers, the new method will help qualitatively evaluate materials for high-tech industries.
Source: Ferra
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