Method for detecting and assembling aircraft carbon brake discs

A technology of carbon brake discs and brake discs, which is applied in the field of detection and assembly of aircraft carbon brake discs, can solve problems such as gullies and unbalanced friction surface wear, and achieve the effects of improving service life, avoiding abnormal vibration, and reducing gully phenomena

Active Publication Date: 2011-05-25
XIAN CHAOMA SCI TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the process of use, it is found that after a period of use of the carbon brake disc, the wear amount of each position of the friction surface is seriously unbalanced, and obvious gullies appear along the radial direction of the friction surface.
This kind of gully phenomenon not only accelerates the wear of the carbon brake disc, but also is one of the root causes of abnormal vibration when the aircraft brakes, and becomes a hidden danger for the safe operation of the aircraft.

Method used

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  • Method for detecting and assembling aircraft carbon brake discs
  • Method for detecting and assembling aircraft carbon brake discs
  • Method for detecting and assembling aircraft carbon brake discs

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] (1) Place the aircraft carbon brake disc horizontally, such as figure 1 Take 8 positions on the friction surface as shown in the figure as measurement points, and use a Shore hardness tester to measure the Shore hardness of the measurement points to obtain the Shore hardness values ​​of the 8 measurement points;

[0022] (2) Discard the two values ​​with the largest dispersion among the 8 Shore hardness values, and then calculate the arithmetic mean of the remaining Shore hardness values ​​to obtain the average Shore hardness HS of the friction surface 1 ;

[0023] (3) Turn over the aircraft carbon brake disc, repeat steps (1) and (2) to obtain the average Shore hardness HS of another friction surface 2 ;

[0024] (4) Calculate HS 1 and HS 2 The arithmetic mean value of is used as the standard Shore hardness of aircraft carbon brake discs;

[0025] (5) Assemble the aircraft carbon brake discs with standard Shore hardness, and control the standard Shore hardness dif...

Embodiment 2

[0028] (1) Place the aircraft carbon brake disc horizontally, such as figure 1 Take 8 positions on the friction surface as shown in the figure as measurement points, and use a Shore hardness tester to measure the Shore hardness of the measurement points to obtain the Shore hardness values ​​of the 8 measurement points;

[0029] (2) Discard the two values ​​with the largest dispersion among the 8 Shore hardness values, and then calculate the arithmetic mean of the remaining Shore hardness values ​​to obtain the average Shore hardness HS of the friction surface 1 ;

[0030] (3) Turn over the aircraft carbon brake disc, repeat steps (1) and (2) to obtain the average Shore hardness HS of another friction surface 2 ;

[0031] (4) Calculate HS 1 and HS 2 The arithmetic mean value of is used as the standard Shore hardness of aircraft carbon brake discs;

[0032] (5) Assemble the aircraft carbon brake discs with standard Shore hardness, and control the standard Shore hardness dif...

Embodiment 3

[0035] (1) Place the aircraft carbon brake disc horizontally, such as figure 2 As shown, take 6 positions on the friction surface as measurement points, and use a Shore hardness tester to measure the Shore hardness of the measurement points to obtain the Shore hardness values ​​of the 6 measurement points;

[0036] (2) Discard the value with the largest dispersion among the 6 Shore hardness values, and then calculate the arithmetic mean of the remaining Shore hardness values ​​to obtain the average Shore hardness HS of the friction surface 1 ;

[0037] (3) Turn over the aircraft carbon brake disc, repeat steps (1) and (2) to obtain the average Shore hardness HS of another friction surface 2 ;

[0038] (4) Calculate HS 1 and HS 2 The arithmetic mean value of is used as the standard Shore hardness of aircraft carbon brake discs;

[0039] (5) Assemble the aircraft carbon brake discs with standard Shore hardness, and control the standard Shore hardness difference between two...

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Abstract

The invention discloses a method for detecting and assembling aircraft carbon brake discs, which provides a detection method for circular distribution and two-side measurement according to the manufacturing characteristics of the aircraft carbon brake discs and the using characteristics of a Shore hardness tester and can better characterize the Shore hardness of each aircraft carbon brake disc. During assembling, the Shore hardness differences of two adjacent aircraft carbon brake discs and the whole set of aircraft carbon brake discs are controlled to effectively reduce the gully phenomenon of frication surfaces, prolong the service life of the aircraft carbon brake discs and avoid the abnormal vibration generated by the aircraft carbon brake discs.

Description

technical field [0001] The invention belongs to the technical field of detection of aircraft carbon brake discs, and in particular relates to a detection and assembly method of aircraft carbon brake discs. Background technique [0002] C / C composite materials have excellent high-temperature friction properties, light weight and high strength, and are the preferred materials for aircraft braking systems. Since the carbon brake device was installed on the VC-10 aircraft for test flight in 1973, C / C composite materials have been more and more widely used in the braking systems of modern military and civil aircraft, becoming the largest field of C / C composite materials. . [0003] Compared with metal brake discs, carbon brake discs not only have the advantages of light weight, good friction characteristics, high temperature resistance, and long service life, but also have the advantages of small frictional vibration and low noise because the C / C composite material is a soft mat...

Claims

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Application Information

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IPC IPC(8): B64F5/00G01N3/40B64F5/60
Inventor 苏君明谷立民孟志毓徐普利潘向涛范军华朱艳
Owner XIAN CHAOMA SCI TECH
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