According to the China National Defense Science and Technology Information Network, the US Department of Defense funded US$7.5 million for a US university project to study a new type of carbon fiber epoxy resin composite material that mimics the layered spiral structure of the pliers' inner skin, which can be used in aircraft and automobiles. Frames, body armor and sports equipment such as football helmets. A team of researchers at the California Institute of Technology found that the pliers were extremely strong and light, capable of destroying mollusk shells and crab exoskeletons, and their underwater acceleration exceeded bullets of 0.22 inch diameter. The team found that the pliers of the prawns were highly complex and consisted of three special parts. These three parts work together and are harder than many engineering ceramic materials. Among them, the inner skin region is a spiral mineralized fiber layer that acts as a shock absorber. The new carbon fiber epoxy resin composite mimics the inner layered spiral structure design of the pliers. The research team used experiments and calculations to find that the spiral structure can reduce the damage propagation along the thickness of the composite panel when impacted, resulting in increased toughness. The new carbon composite structure arranges the spiral layers at three different angles from 10 degrees to 25 degrees. The two control structures consist of a unidirectional layer and a typical quasi-isotropic structural layer of current aerospace carbon composites, with subsequent layers rotated 90 degrees in different directions. To test the strength of different structures, the researchers used a drop weight impact test system similar to the aircraft industry to evaluate dent damage, external visual damage, and internal damage. The new spiral structure has 20% to 50% less dent loss than the typical industrial quasi-isotropic structure, while fiber splitting and major external fiber damage and puncture are reduced. Using ultrasound, the researchers found a catastrophic internal fracture in the traditional quasi-isotropic sample, but the damage inside the new spiral structure sample only occurred in the laterally extended structure. In the compression test, the new spiral structure material had about 15% to 25% more residual strength than the traditional quasi-isotropic material after fracturing. The team used finite element modeling to understand failure modes and correct the structure. Carbon composites designed in a spiral model can be used in aircraft and car frames, body armor, and sports equipment such as football helmets. The study was funded by the U.S. Air Force Scientific Research Office and the U.S. National Science Foundation and continued to receive US$7.5 million in funding from the Department of Defense. (Hu Yanping) Materials:Type 304,Type 304 L,Type 316 and Type 316 L.
Packing:Different coil diameters or coil weights are available for customers'choices.
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Weaving:Plain weave or twill weave
Characteristics:acid-resisting alkali resisting,wear-resisting and heat-resisting
Usefulness:Used for industries of mining, oil, chemicals,food, pharmaceuticals, machine making,scientific research,aviation,etc.