The Application of Discriminant Analysis in Shaft Surface Classification for Radial Lip Seals

1996 ◽  
Author(s):  
Jiajin Qu
Keyword(s):  
Discriminant Analysis ◽  
Lip Seals ◽  
Surface Classification ◽  
Shaft Surface

The Effect of Surface Roughness and Shaft Speed on the Frictional Characteristics of Radial Lip Seals

2010 ◽  
Author(s):  
Hacer O¨zperk ◽  
Vedat Temiz
Keyword(s):  
Surface Roughness ◽  
Test System ◽  
Friction Torque ◽  
Cylinder Block ◽  
System A ◽  
Load Cells ◽  
Lip Seals ◽  
Inner Diameter ◽  
Shaft Surface ◽  
Effect Of Surface

The purpose of this study is to investigate the effects of shaft surface roughness, speed, seal inner diameter, and lip geometry on the rotary lip seal’s performance. For this reason, a test system was developed. In this test system, a cylinder block is placed on four load cells to monitor the friction torque generated between seal and counter face. Radial lip geometry was taken as the prior criteria to group the seals for experiments. Two different profiles (with and without dust lip) and three different inner diameters (30-35-40 mm) were selected for the tests. Three shaft surface roughness values for each diameter were also tested. One shaft surface roughness value is between the limits that are recommended in standards, and two others are greater and less than that limits. At the end of the systematical experiments, variations of friction torque with respect to shaft surface roughness, lip profile and shaft diameter have been determined.

The effect of texture on the shaft surface on the sealing performance of radial lip seals

2014 ◽  
Vol 57 (7) ◽  
pp. 1343-1351 ◽  
Author(s):  
Fei Guo ◽  
XiaoHong Jia ◽  
Zhi Gao ◽  
YuMing Wang
Keyword(s):  
Sealing Performance ◽  
Lip Seals ◽  
Shaft Surface

scholarly journals Effect of Shaft Surface Roughness on the Performance of Radial Lip Seals

Lubricants ◽  
2018 ◽  
Vol 6 (4) ◽  
pp. 99 ◽  
Author(s):  
Emilia Kozuch ◽  
Petros Nomikos ◽  
Ramin Rahmani ◽  
Nick Morris ◽  
Homer Rahnejat
Keyword(s):  
Surface Topography ◽  
Manufacturing Processes ◽  
Lubrication System ◽  
Roughness Parameters ◽  
Lip Seal ◽  
Practical Applications ◽  
Sealing Performance ◽  
Lip Seals ◽  
Leakage Failure ◽  
Shaft Surface

Reduction of leakage from the shaft–radial lip seal conjunction is critical in ensuring enduring performance of entire lubrication system. This paper investigates leakage from three types of shaft surfaces, finished using different manufacturing processes. The measurement of surface topography is conducted in order to determine the pertinent roughness parameters which correspond to the observed sealing performance in real practical applications. It is found that the skewness of the surface topography correlates well with the anecdotal leakage failure rate. To quantify this association, a hydrodynamic model, accounting for shaft roughness in a deterministic manner is developed. The results from the numerical analyses confirm that the lubricant mass flow rate is reduced in the case of negatively skewed surface height distributions, when compared with the positively skewed profiles.

Shaft surface manufacturing methods for rotary shaft lip seals

2005 ◽  
Vol 2005 (7) ◽  
pp. 5-9 ◽  
Author(s):  
Thomas Kunstfeld ◽  
Werner Haas
Keyword(s):  
Lip Seals ◽  
Manufacturing Methods ◽  
Shaft Surface

An Introduction to Discriminant Analysis

1989 ◽  
Vol 22 (3) ◽  
pp. 158-168 ◽  
Author(s):  
Carl J Huberty ◽  
Richard M. Barton
Keyword(s):  
Discriminant Analysis

Brief Report. The PCL-R and Gender

2000 ◽  
Vol 16 (3) ◽  
pp. 147-149 ◽  
Author(s):  
Martin Grann
Keyword(s):  
Gender Differences ◽  
Sexual Behavior ◽  
Discriminant Analysis ◽  
Juvenile Delinquency ◽  
Violent Offenders ◽  
Matched Pairs ◽  
Psychopathy Checklist ◽  
Psychopathy Checklist Revised ◽  
And Gender

Summary: Hare's Psychopathy Checklist - Revised (PCL-R; Hare, 1991 ) was originally constructed for use among males in correctional and forensic settings. In this study, the PCL-R protocols of 36 matched pairs of female and male violent offenders were examined with respect to gender differences. The results indicated a few significant differences. By means of discriminant analysis, male Ss were distinguished from their female counterparts through their relatively higher scores on “callous/lack of empathy” (item 8) and “juvenile delinquency” (item 18), whereas the female Ss scored relatively higher on “promiscuous sexual behavior” (item 11). Some sources of bias and possible implications are discussed.

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