Thermal bimetal tension driver and preparation method thereof

A thermal bimetal driver technology, applied in the direction of instruments, scientific instruments, measuring devices, etc., can solve the problems of difficult mass production, cumbersome preparation, complex structure of thermal bimetal drivers, etc., and achieve the effect of simple structure and convenient preparation

Pending Publication Date: 2019-09-17
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] One of the purposes of the present invention is to provide a thermal bimetallic tensile actuator to solve the problem that the existing thermal bimetallic actuator has complex structure, cumbersome preparation, and can only be used in low-temperature TEM in-situ mechanical experiments
[0010] The second object of the present invention is to provide a preparation method for preparing the above-mentioned thermal bimetallic tensile actuator, in order to solve the problem that the existing thermal bimetallic actuator is difficult to achieve mass production

Method used

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  • Thermal bimetal tension driver and preparation method thereof
  • Thermal bimetal tension driver and preparation method thereof
  • Thermal bimetal tension driver and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] see figure 1 , this embodiment provides a thermal bimetal tension driver, including a sheet body 1 and a first opening 2 and a second opening 3 opened on the body 1;

[0046] The body 1 includes an active area 4 and a passive area 5 arranged on both sides of the active area 4, the thermal expansion coefficient of the material used in the active area 4 is greater than that of the material used in the passive area 5;

[0047] The first opening 2 is located in the active area 4, and the second opening 3 is located in the passive area 5;

[0048] A first opening 2 is provided in the active area 4, a second opening 3 is provided in each of the two passive areas 5, and the two second openings 3 are symmetrically arranged on both sides of the first opening 2;

[0049] The connecting portion between the first opening 2 and the passive area 5 is set as a first carrying beam 6, the connecting portion between the second opening 3 and the active area 4 is set as a second carrying ...

Embodiment 2

[0055] This embodiment is based on Embodiment 1, and the difference is that in this embodiment, the first opening 2 and the two second openings 3 are open on the same side of the body 1, see figure 2 .

[0056] Depend on figure 2 As shown, the body 1 has a semicircular sheet structure, and the open ends of the first opening 2 and the two second openings 3 are all facing the linear side of the body 1, which makes the two first carrying beams 6 and the two second The two carrying beams 7 are both configured as a cantilever structure, and the ends of the first carrying beam 6 and the second carrying beam 7 that are away from the fixed connection on the body 1 are set as the suspension ends. Since the coefficient of thermal expansion of the first carrying beam 6 is greater than that of the second carrying beam 7, when heated, the suspension ends of the two first carrying beams 6 will bend toward one side of the second carrying beam 7, i.e. A tension driving position 8 can be f...

Embodiment 3

[0059] This embodiment is based on Embodiment 1, and the difference is that the same side ends of the first opening 2 and the two second openings 3 communicate through a connecting channel 9, and the first opening 2, the The second openings 3 are respectively perpendicular to the connecting channels 9, see image 3 .

[0060] Depend on image 3 It can be seen that the body 1 has a circular plate structure, and the connecting channel 9 is arranged in the body 1, and the two first carrying beams 6 and the two second carrying beams 7 are both set as cantilever structures. When heated, the two The suspension ends of the first carrying beams 6 all bend towards one side of the second carrying beams 7, that is, a stretching driving position 8 can be formed between the suspension ends of the two first carrying beams 6, so that in this embodiment The thermal bimetal driver in this example can be called a closed tension driver.

[0061] At the same time, since the two first carrying ...

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Abstract

The present invention relates to the technical field of in-situ characterization of nano materials based on a transmission electron microscope, and provides a thermal bimetal tension driver and a preparation method thereof. The thermal bimetal tension driver comprises a body, a first opening and second openings. The body comprises an active area and passive areas arranged on both sides of the active area. The active area is provided with the first opening; each passive area is provided with the second opening; the connecting parts between the first opening and the passive areas are set as the first mounting beams; the connecting part between the second opening and the active area is set as the second mounting beam; the first mounting beams and the second mounting beam are connected in parallel; and a tension driving position is formed between the two first mounting beams on the active area. The thermal bimetal tension driver of the invention has the advantages of simple structure and convenient preparation and is convenient for batch production through the integrated structural design, and the TEM in-situ tensile test can be performed at different temperatures; simultaneously the structure of the driver can be flexibly designed as required, and different driving requirements are satisfied.

Description

technical field [0001] The invention relates to the technical field of in-situ characterization of nanomaterials based on a transmission electron microscope, in particular to a thermal bimetal stretch driver and a preparation method thereof. Background technique [0002] Mechanical properties are an important index to characterize the performance of materials. Materials are often subjected to active or passive stress during service. Studying the elastic-plastic deformation process of materials under stress can provide theoretical and experimental basis for failure analysis, structural design, material modification, and new material development. With the continuous development of material science and the increasing requirements for the mechanical properties of materials in all walks of life, the research work is also deepening. Transmission electron microscopy (TEM) has become a powerful tool for materials research with its nano-atomic resolution capability. As an importan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/08G01N3/02B23P15/00
CPCG01N3/08G01N3/02B23P15/00G01N2203/0017G01N2203/0075G01N2203/0641
Inventor 韩晓东李志鹏毛圣成张剑飞马东锋翟亚迪李雪峤张晴栗晓辰马腾云张泽
Owner BEIJING UNIV OF TECH
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