SAE ARP598 and ISO 4407 Compliant Technological Advances in Wear Debris Particle Imaging for On-Site Condition Monitoring in the Aerospace Industry

2017 ◽  
Author(s):  
Violet Leavers
Keyword(s):  
Condition Monitoring ◽  
Wear Debris ◽  
Aerospace Industry ◽  
Site Condition ◽  
Debris Particle ◽  
Technological Advances ◽  
Particle Imaging

Online condition monitoring of misaligned meshing gears using wear debris and oil quality sensors

2018 ◽  
Vol 70 (4) ◽  
pp. 645-655 ◽  
Author(s):  
Paras Kumar ◽  
Harish Hirani ◽  
Atul Kumar Agrawal
Keyword(s):  
Condition Monitoring ◽  
Wear Debris ◽  
Oil Quality ◽  
Spur Gear ◽  
Metallic Particle ◽  
Sem Images ◽  
Content Type ◽  
Moisture Sensor ◽  
Laser Alignment ◽  
Online Sensors

Purpose This paper aims to investigate the effect of misalignment on wear of spur gears and on oil degradation using online sensors. Design/methodology/approach The misalignment effect on gears is created through a self-alignment bearing, and is measured using laser alignment system. Several online sensors such as Fe-concentration sensor, moisture sensor, oil condition sensor, oil temperature sensor and metallic particle sensor are installed in the gear test rig to monitor lubricant quality and wear debris in real time to assess gearbox failure. Findings Offset and angular misalignments are detected in both vertical and horizontal planes. The failure of misaligned gear is observed at both the ends and on both the surfaces of the gear teeth. Larger-size ferrous and non-ferrous particles are traced by metallic particle sensor due to gear and seal wear caused by misalignment. Scanning electron microscope (SEM) images examine chuck, spherical and flat platelet particles, and confirm the presence of fatigue (pitting) and adhesion (scuffing) wear mechanism. Energy-dispersive X-ray spectroscopy analysis of SEM particles traces carbon (C) and iron (Fe) elements due to gear failure. Originality/value Gear misalignment is one of the major causes of gearbox failure and the lubricant analysis is as important as wear debris analysis. A reliable online gearbox condition monitoring system is developed by integrating wear and oil analyses for misaligned spur gear pair in contact.

Dedicated On-Site Condition Monitoring of High Voltage Power Cables up to 150kV

ENERGYO ◽  
2018 ◽  
Author(s):  
Edward Gulski ◽  
Paul P. Seitz ◽  
Ben Quak ◽  
Frank Petzold ◽  
Frank De Vries
Keyword(s):  
Condition Monitoring ◽  
High Voltage ◽  
Power Cables ◽  
Site Condition

Significance of aspect ratio of wear debris in condition monitoring

2020 ◽  
Author(s):  
Rakesh Ranjan ◽  
Subrata Kumar Ghosh ◽  
Manoj Kumar
Keyword(s):  
Aspect Ratio ◽  
Condition Monitoring ◽  
Wear Debris
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