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Testing system and testing method for fibrous material friction characteristics in normal and low temperature environment

A technology of fiber material and friction characteristics, which is applied in the field of test systems for friction characteristics of fiber materials

Pending Publication Date: 2017-05-31
LANZHOU UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] According to the existing literature research, up to now, there are few studies on the friction characteristics of fiber materials, mainly due to the limitation of test equipment.

Method used

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  • Testing system and testing method for fibrous material friction characteristics in normal and low temperature environment
  • Testing system and testing method for fibrous material friction characteristics in normal and low temperature environment

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Embodiment Construction

[0018] The technical scheme of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0019] Usually, the friction force of fiber materials is very small, and it is difficult to capture its friction force with traditional means of force measurement. Considering the characteristics of superconducting materials working at low temperature, the applicant designed a strain acquisition instrument instead of the traditional force sensor. The small force generated during the friction process is collected, and the Dewar device is introduced for the first time to realize the friction characteristic test function of fiber materials in normal and low temperature environments. The main principle diagram is as follows:

[0020] like figure 1 As shown, the strain acquisition instrument 2 is fixed on the beam of the tensile testing machine 1, and the strain acquisition instrument 2 is connected to the computer 7 through the RS-232 communicatio...

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Abstract

The invention discloses a testing system for fibrous material friction characteristics in a normal or low temperature environment. The system comprises a tensile testing machine, a strain acquisition device, a testing device and a monitoring and control system, the testing device comprises a testing tube, clump weights and a testing support, the testing tube is horizontally placed on the testing support, after cellosilk is wound around the testing tube a round, a clump weight is hung on the lower end of the cellosilk, and the upper end is connected with the strain acquisition device; the testing system further comprises a U-shaped Dewar type container, the testing device is located in the U-shaped Dewar type container, the Dewar type container contains liquid nitrogen, and the whole testing device is immersed in the liquid nitrogen; the invention provides a testing method for the fibrous material friction characteristics in the normal or low temperature environment at the same time. A traditional force sensor is replaced by the strain acquisition device to capture micro-deformation in the friction process of the cellosilk, the test temperature of a low temperature is provided by the Dewar type container, and therefore the tests of the friction property of the cellosilk in the normal environment and in the low temperature environment are achieved.

Description

technical field [0001] The invention belongs to the technical field of testing the friction characteristics of fiber materials, in particular to a testing system and a testing method for the friction characteristics of fiber materials in normal and low temperature environments. Background technique [0002] Fiber materials, especially fiber filaments such as NbTi and Nb3Sn, have more and more important applications in the field of superconductivity. The deformation and stress characteristics in the low-temperature working environment are one of the important issues that are of great concern to the research in the field of superconductivity. Generally speaking, the friction characteristics of fiber materials are often related to their temperature field (coupling), so designing a device that meets the special application environment is a necessary and indispensable prerequisite for testing its electromagnetic characteristics. The research and development of this device can pr...

Claims

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Application Information

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IPC IPC(8): G01N19/02
CPCG01N19/02
Inventor 喇世仁王军刘伟张兴义周军周又和
Owner LANZHOU UNIVERSITY
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