Failure of a bearing in reduction gear box of a turbo shaft engine is investigated to determine
its root cause. Teardown inspections followed by metallurgical investigations are carried out …

Failed bearings of various aero-engines were subjected to investigations. The bearing of
cooling turbine of aircraft designated as B-1 was found to fail due primarily to misalignment …

Enrichment of metal particles in lubricating oil is a crucial pretreatment for wear debris
analyses in applications of condition-based machinery maintenance. Current techniques …

The cleanliness of lubricating oil plays a key role in determining the operational health of
mechanical systems, serving as a critical metric that delineates the extent of equipment …

This paper presents a developed dislocation superimposed method (DSM) for automatically
extracting the component of impulsive signals from abnormal noise signals of an engine at a …

The metallic elements presented in lubricants are not only indications of oil life, but also
reveal the healthiness of mechanical system; thus, the online monitoring of lubricant …

Failure of a bearing in reduction gear box of a turbo shaft engine is investigated to determine
its root cause. Teardown inspections followed by metallurgical investigations are carried out …

Paper analyses the principles and industrial applications of thermoelectric generators and
energy harvesting devices in their almost 200-year history, eg from first documented …