Fretting Wear Protection by Lubricating Greases Tester – Analysis and Maintenance

Fretting Wear Protection by Lubricating Greases Tester – Analysis and Maintenance

Wear Scar Evaluation
After testing, examine wear scars via optical or electron microscopy. Measure scar width and depth to calculate wear volume. Compare untreated and greased specimens to quantify protection factor.

Debris Characterization
Collect and analyze wear particles using sieving or laser diffraction to assess size distribution. Smaller debris often indicates effective lubrication, while larger flakes suggest adhesive wear.

Instrument Care

• Actuator Calibration: Verify displacement amplitude with laser micrometer every 500,000 cycles.

• Load Cell Check: Perform two-point calibration (0 N and nominal load) quarterly.

• Environmental Controls: Replace humidity sensors annually in climatic chambers to ensure accurate conditions.

Reporting and Standards
Compile friction coefficient curves, wear volume, and debris metrics in a standardized report. Reference test conditions—load, frequency, temperature—to ensure comparability across formulations.

Application Insights
Use fretting wear data to guide additive selection—solid lubricants like MoS₂ or PTFE particles are evaluated for boundary regime performance. Adjust grease base oil viscosity and thickener type to balance film retention and shear stability.