Technical damage analysis of a mechanical seal based on thermal waves and correlated with EDX and SEM

1999 ◽  
Author(s):  
A. Haj-Daoud ◽  
U. Katscher ◽  
B. K. Bein ◽  
J. Pelzl ◽  
H. Bach ◽  
...  
Keyword(s):  
Damage Analysis ◽  
Mechanical Seal ◽  
Thermal Waves

Fully Split Mechanical Seal for Shaft Wobbling

2015 ◽  
Vol 69 (5) ◽  
pp. 490-496
Author(s):  
Takashi Kamizono
Keyword(s):  
Mechanical Seal

The Metallographer's Role in Damage Analysis

2011 ◽  
Vol 48 (9) ◽  
pp. 474-482
Author(s):  
G. Weilnhammer
Keyword(s):  
Damage Analysis

scholarly journals Interface damage analysis of composite hat-stiffened panels

2021 ◽  
Vol 1948 (1) ◽  
pp. 012139
Author(s):  
Tao Wang ◽  
Ruixiang Bai ◽  
Changlong Wei ◽  
Xiaodi Huang ◽  
Heshan Bai
Keyword(s):  
Damage Analysis ◽  
Stiffened Panels ◽  
Interface Damage

scholarly journals Two-scale homogenization of hydrodynamic lubrication in a mechanical seal with isotropic roughness based on the Elrod cavitation algorithm

2021 ◽  
pp. 135065012110176
Author(s):  
Yanxiang Han ◽  
Qingen Meng ◽  
Gregory de Boer
Keyword(s):  
Surface Topography ◽  
Carrying Capacity ◽  
Hydrodynamic Lubrication ◽  
Tribological Performance ◽  
Stribeck Curve ◽  
Polar Coordinate System ◽  
Load Carrying Capacity ◽  
Mechanical Seal ◽  
Macro Scale ◽  
Load Carrying

A two-scale homogenization method for modelling the hydrodynamic lubrication of mechanical seals with isotropic roughness was developed and presented the influence of surface topography coupled into the lubricating domain. A linearization approach was derived to link the effects of surface topography across disparate scales. Solutions were calculated in a polar coordinate system derived based on the Elrod cavitation algorithm and were determined using homogenization of periodic simulations describing the lubrication of a series of surface topographical features. Solutions obtained for the hydrodynamic lubrication regime showed that the two-scale homogenization approach agreed well with lubrication theory in the case without topography. Varying topography amplitude demonstrated that the presence of surface topography improved tribological performance for a mechanical seal in terms of increasing load-carrying capacity and reducing friction coefficient in the radial direction. A Stribeck curve analysis was conducted, which indicated that including surface topography led to an increase in load-carrying capacity and a reduction in friction. A study of macro-scale surface waviness showed that the micro-scale variations observed were smaller in magnitude but cannot be obtained without the two-scale method and cause significant changes in the tribological performance.

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