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Radial deformation measuring device based on LVDT sensor

A sensor device, radial deformation technology, applied in electromagnetic measurement device, electric/magnetic solid deformation measurement, electric/magnetic diameter measurement, etc., to achieve the effect of simple structure, convenient clamping, and improved measurement accuracy

Pending Publication Date: 2019-10-25
INST OF CHEM MATERIAL CHINA ACADEMY OF ENG PHYSICS
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0003] In order to solve the above-mentioned technical problems, the present invention provides a radial deformation measuring device based on LVDT sensor. hoop strain change

Method used

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  • Radial deformation measuring device based on LVDT sensor
  • Radial deformation measuring device based on LVDT sensor
  • Radial deformation measuring device based on LVDT sensor

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Embodiment Construction

[0018] The present invention will be further explained and illustrated below in conjunction with the accompanying drawings and specific embodiments.

[0019] Such as figure 1 and figure 2 As shown, the present invention provides a radial deformation measurement device based on an LVDT sensor, including a sample 1, an auxiliary tooling 3 and a sensor device, and the sensor device includes a flexible iron wire 2, an LVDT coil 4, an LVDT iron core 5, a spring 7 and bolt 6, the sample 1 is fixed between the flexible iron wire 2 and the auxiliary tooling 3, one end of the flexible iron wire 2 is connected to the bolt 6 and fixed on one side of the auxiliary tooling 3, the other end of the flexible iron wire 2 is connected with the spring 7 in turn It is connected in series with the LVDT iron core 5 and passed through the LVDT coil 4 , and the LVDT coil 4 is fixed on the other side of the auxiliary tooling 3 . One side of the auxiliary tooling 3 is provided with a U-shaped notch ...

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Abstract

The invention discloses a radial deformation measuring device based on an LVDT sensor. The device comprises an auxiliary tooling and a sensor device. The sensor device comprises a flexible iron wire,an LVDT coil, an LVDT core, a spring and a bolt. A sample is fixed between the flexible iron wire and the auxiliary tooling, one end of the flexible iron wire is connected to a bolt and is fixed on one side of the auxiliary tooling, the other end of the flexible iron wire is sequentially connected to the spring and the LVDT core in series and passes through the LVDT coil, and the LVDT coil is fixed to the other side of the auxiliary tooling. The device is simple to assemble, the radial deformation value can be effectively amplified, the measurement accuracy is improved, and the hoop strain ismeasured without affecting an explosive test.

Description

technical field [0001] The invention relates to the technical field of mechanical properties of materials, in particular to a radial deformation measuring device based on an LVDT sensor. Background technique [0002] In the test of material mechanical properties, including tension, compression, confining pressure stretching, confining pressure compression, etc., it is necessary to accurately measure its axial and radial deformation in order to accurately evaluate the mechanical properties of the material and build a mechanical model. The measurement of radial deformation is An important test content for determining the mechanical properties of explosives. Compared with the axial deformation, the radial deformation test is difficult to measure accurately due to factors such as small gauge length and small deformation. The existing radial test methods are divided into three types. One is to measure based on strain gauges, but it obtains point strain instead of global average ...

Claims

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Application Information

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IPC IPC(8): G01B7/16G01B7/12
CPCG01B7/16G01B7/12
Inventor 袁洪魏唐维董天宝赵龙颜熹琳
Owner INST OF CHEM MATERIAL CHINA ACADEMY OF ENG PHYSICS
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