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This study investigates condition monitoring of oil lubricated hybrid sliding contacts using acoustic emission (AE) techniques. Experiments were carried out on a pin-on-disc tribometer with a silicon nitride or M50 ball sliding on a silicon nitride or M50NiL steel flat disc at a sliding velocity of 3m/s under high contact pressures. A commercially available aviation oil, EXXON Turbo 2380 (ET2380),...
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