Thin Dense Chrome Bearing Insertion Program.
Abstract
This report includes the results of program efforts to develop and introduce a nodular Thin Dense Chrome (TDC) plating process for aircraft engine mainshaft bearings. program objectives included development of a Thin Dense Chrome material/process specification and completing a thorough evaluation of all potential risks associated with introducing TDC coated Bearings into field engine applications. A comprehensive series of subscale and full scale tests were completed to evaluate the capabilities of TDC coated bearings at various inservice operating conditions. TDC coated bearings demonstrated improved corrosion and contamination resistance. TDC coated bearings also demonstrated acceptable performance during thermal cycle, oil-off, and induced defect conditions. However, the TDC coating performance did not meet the required objectives in the areas of rolling contact fatigue life, skid damage resistance, engine assembly damage tolerance, and engine operational endurance. Based on the results of this program, it was concluded that TDC coated bearings provided too great of a risk for insertion into the mainshaft bearing positions of military aircraft engines.
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 01, 1997
- Accession Number
- ADA330677
Entities
People
- Bernie Shucktis
- Mark Rhoads
- Michael J. Johnson
Organizations
- GE Aerospace