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Tribometer

A tribology, friction contact technology, used in the field of rheometers

Active Publication Date: 2019-01-11
安东帕有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0019] However, the additional relatively soft spring 10, compared to the spring 20 in the system, poses a problem with certain resonant frequencies in the speed range of the system which can cause upward oscillations

Method used

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Embodiment Construction

[0067] image 3 The shown rheometer 1 comprises a measuring motor 4 and a measuring shaft 6 connected to the measuring motor 4 , at the lower end of which a sample 7 in the form of a ball is mounted above it. By means of a normal force control unit, eg provided in the evaluation and control unit 40 , the sample 7 can be pressed against the underlying sample 8 with a defined force, in particular by the previous lowering of the suspension arm 5 a. Three lower samples 8 mounted symmetrically to each other in the form of blades are in frictional contact with the ball 7 . The blade 8 is supported by a holder 9 which is then supported by a spring 10 . The holder 9 and the spring 10 define a spring unit marked 3 which extends within the length of the arrow 3'. The spring constant of this spring unit 3 can advantageously (if necessary, automatically) be varied via the control and evaluation unit 40 by means of the adjustment mechanism or the adjustment unit 13 . The spring unit 3 i...

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Abstract

The invention relates to a method and a device for determining tribological measurements of a sample (7, 8) using a rheometer (1), wherein the measuring part of the rheometer (1) is replaced by a sample (7, 8), and the sample The surfaces of (7,8) are moved relative to each other in frictional contact. According to the invention, it is arranged that: all parts of the rheometer (1) which hold the sample (7, 8) in a frictional connection and frictional contact or form a force path or cycle of the rheometer, including the sample (7, 8) The spring units (3) pressed against each other are considered to be an oscillating circuit (30), the oscillation properties of the spring units (3) are considered to be related to the oscillation properties of said oscillating circuit (30), and the spring units (3 ) are tuned in such a way that resonant oscillations or influences arising by varying the different measurement conditions expected for the corresponding measurement are taken into account.

Description

technical field [0001] The invention relates to the determination of tribological parameters and measurements. Furthermore, the invention relates to modules (ie tribological units) for such processes. Finally, the invention relates to a rheometer for carrying out the method, if necessary using the modules according to the invention. Background technique [0002] By definition, rheology deals with the deformation and flow properties of substances. A rotational rheometer is a measuring device used to examine the rheological properties of samples of different materials. In this process, the measurement sample to be examined is introduced into a usually narrow measurement gap between two measurement parts which rotate and / or oscillate relative to each other and the material sample is subjected to shear between the measurement parts. Shear stress. The elastic material function is also derived from the axial force acting perpendicular to the shear plane in the case of cone-pla...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N11/00G01N19/02
CPCG01N11/142G01N19/02G01N11/14G01N33/30G01N11/00
Inventor F.沃尔夫B.鲍尔M.克伦恩
Owner 安东帕有限责任公司
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