2results about How to "Relief Concentration" patented technology

The present application relates to a kind of lightweight biomimetic discontinuous fiber spiral composite protective structure, belong to lightweight protective structure design technical field.The lightweight high-strength high-toughness biomimetic discontinuous fiber spiral composite protective structure of the present application is stacked by unit intermittent fiber fabric according to different arrangement angles and arrangement ways, under the condition of local stress concentration in relaxation layer, shear stress is distributed to the intermittent connecting part in each layer, the concentration of interlaminar shear stress is relieved, using the interlaminar shear stress distribution mechanism of the composite material makes crack frequently deflect when it bears load, can delay material failure and destruction, greatly improve the bearing and energy absorption capacity of the composite protective structure.

The invention relates to a preparation method of a carbon fiber reinforced aluminum / glass bead composite metal material. According to the method, nickel-plated carbon fibers are added into aluminum / glass bead powder turbid liquid in a stirring state, and then hot pressed sintering is performed in a graphite mold, so that nickel and aluminum on the surfaces of the nickel-plated carbon fibers tend to form a continuous and uniform Al3Ni thin-film-shaped interface layer at an interface, generation of an Al4C3 brittle phase is hindered, and the performance of the nickel-plated carbon fibers is improved. And the transition of the load from the matrix to the carbon fiber is realized. The proportion of the nickel-plated carbon fibers, the aluminum powder and the glass beads can be properly adjusted according to different purposes, and the material obtained after hot pressing sintering is uniform in component distribution and excellent in performance.