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Direct-acting soft friction testing apparatus

A test device and direct-acting technology, applied in the field of measuring instruments, can solve the problems of not being able to obtain real-time distribution rules of the deformation and lubrication medium on the surface of the elastic material in the contact area, and achieve the effect of simple structure and improved efficiency

Inactive Publication Date: 2013-06-12
CHINA UNIV OF PETROLEUM (BEIJING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, none of these testing machines can obtain the surface deformation of the elastic material and the distribution of the lubricating medium in the contact area in real time during the test.

Method used

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Embodiment Construction

[0039]A kind of direct motion type soft friction testing device proposed by the present invention comprises: a supporting platform; a lower sample fixing frame, which is arranged on the upper part of the supporting platform, and is connected with a driving mechanism, and can be driven by the driving mechanism. Linear movement in the plane. The upper sample assembly is arranged on the upper part of the lower sample holder, and is connected with the loading mechanism capable of exerting downward pressure; the friction detection mechanism is arranged on the support platform, and is connected with the upper sample assembly connected; two samples with different elastic modulus are respectively fixed in the upper sample assembly and the lower sample holder, and the upper sample abuts against the lower sample through the loading mechanism Above, the friction force between the upper and lower samples is detected by the friction force detection mechanism.

[0040] In the present inven...

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Abstract

The invention relates to a direct-acting soft friction testing apparatus comprising a supporting stage. A lower sample fixing rack is arranged on the upper part of the supporting stage, and is connected with a driving mechanism. Under the driving of the driving mechanism, the fixing rack can move linearly in a plane. An upper sample assembly is arranged on the upper part of the lower sample fixing rack, and is connected to a loading mechanism which can apply a pressure downwards. A friction force detecting mechanism is connected with the upper sample assembly. Two samples with different elastic modulus are respectively fixed in the upper sample assembly and on the lower sample fixing rack. With the loading mechanism, the upper sample is pressed against the lower sample. The apparatus is advantaged in simple structure. Various testing parameters can be easily changed. When the lower sample is manufactured by using a transparent material, an elastic material surface deformation image and a residual liquid distribution image on a contact area can be acquired in real-time. Therefore, a solution is provided for optimizing selection of soft friction materials in complicated environments.

Description

technical field [0001] The invention relates to a measuring instrument, in particular to a soft friction test device for simulating pure sliding between an elastic material and a rigid material with an elastic modulus lower than 10GPa in the oil and gas field. Background technique [0002] Oil and gas pipelines are the main arteries of the national economy. Ensuring the safe operation of oil and gas pipelines and preventing accidents is a major issue related to the national economy and people's livelihood. Pig cleaning technology has been widely used in the cleaning, maintenance and maintenance of various pipelines. From the perspective of tribology, when the pig is in contact with the inner wall of the pipeline, its movement mode is one-way sliding friction. However, due to the complexity of the pigging process, there are still few studies on the unidirectional sliding soft friction process and law in this complex environment. [0003] After the laying of long-distance oi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N19/00
Inventor 刘书海谭桂斌王德国
Owner CHINA UNIV OF PETROLEUM (BEIJING)
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