Shape memory alloy fiber and super-elastic body compound deformation skin

A technology of memory alloy and superelastic body, which is applied in the aviation field, can solve the problems of insufficient deformation performance and single function of deformed skin, and achieve the effect of broad application prospects

Inactive Publication Date: 2015-08-05
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a multifunctional deformable skin made of shape memory alloy fiber and superelastic body in order to solve the problem of single function and insufficient deformation performance of the existing deformable skin

Method used

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  • Shape memory alloy fiber and super-elastic body compound deformation skin
  • Shape memory alloy fiber and super-elastic body compound deformation skin
  • Shape memory alloy fiber and super-elastic body compound deformation skin

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specific Embodiment approach 1

[0014] Specific Embodiment 1: In this embodiment, the shape memory alloy fiber and superelastic composite deformed skin is composed of a superelastic matrix 1 and a shape memory alloy fiber 2, and the shape memory alloy fiber 2 is solidified and arranged in parallel in the superelastic matrix 1 .

[0015] In this embodiment, when the shape memory alloy is in the martensitic phase, the out-of-plane deformation of the multifunctional deformable skin is driven by the action of the driver. The shape memory alloy is then thermally excited, and this multifunctional deformable skin can quickly return to its original shape.

[0016] The multifunctional deformable skin of this embodiment has the following advantages:

[0017] 1. Regardless of whether the shape memory alloy fibers in the multifunctional deformable skin are in the martensite phase or the austenite phase, the composite multifunctional skin system exhibits good in-plane deformation performance.

[0018] 2. When the shape...

specific Embodiment approach 2

[0020] Embodiment 2: This embodiment differs from Embodiment 1 in that the superelastomer matrix 1 is a rubber-type hyperelastomer, a gel-type hyperelastomer or a polyurethane-type hyperelastomer. Other steps and parameters are the same as those in Embodiment 1.

specific Embodiment approach 3

[0021] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the shape memory alloy fiber 2 is made of nickel-titanium shape memory alloy, copper-nickel shape memory alloy, copper-aluminum shape memory alloy, Copper-zinc alloys or iron-based shape memory alloys. Other steps and parameters are the same as those in Embodiment 1 or Embodiment 2.

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Abstract

The invention relates to a shape memory alloy fiber and super-elastic body compound deformation skin, belonging to the technical field of aviation, and aiming at solving the problems that the existing deformation skin has a single function and is poor in deformation performance. The shape memory alloy fiber and super-elastic body compound deformation skin comprises a super-elastic body base body and shape memory alloy fibers, wherein the shape memory alloy fibers are arranged in the super-elastic body base body in parallel in a curing way. The multifunctional deformation skin has in-plane deformation capability, out-plane deformation capability and variable rigidity characteristic, is capable of realizing the in-plane deformation with the shearing angle being + / -20 degrees and hardly has large wrinkles; the out-plane deformation can be transformed into a T-shaped curved surface state from a plane state. Furthermore, due to the excitation of heat energy, in the martensite phase and austenite phase transformation process of shape memory alloy, the compound skin system can obtain the variable rigidity characteristic.

Description

technical field [0001] The invention belongs to the technical field of aviation, and in particular relates to a deformed skin material for deformed aircraft. Background technique [0002] As a kind of intelligent material, shape memory alloy has been extensively researched and developed in industry and academia all over the world in recent years. Two important properties of shape memory alloys are superelasticity and shape memory properties. The use of shape memory alloys in the design and manufacture of actuators is one of its main application areas. Of course, due to these two important characteristics of shape memory alloys, it has shown broad application prospects in many aspects. [0003] Hyperelastomers are a class of soft materials with super large deformation capacity, and there are studies on strain deformation of more than 100% in the literature reports. The patent with the application number CN201310245511.5 provides a deformed skin composed of multiple shape m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B64C1/12
Inventor 冷劲松冯宁刘立武刘彦菊
Owner HARBIN INST OF TECH
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