Two-Process Random Textures: Measurement, Characterization, Modeling and Tribological Impact: A Review

Area of Science:

• Tribology
• Surface Engineering
• Mechanical Engineering

Background:

• Two-process random textures, like plateau-honed cylinder surfaces, are common in machined elements.
• Existing knowledge on the measurement, modeling, and behavior of these textures is limited.
• These surfaces are highly sensitive to measurement errors and challenging to model.

Purpose of the Study:

• To present methods for measuring, characterizing, and modeling two-process textures.
• To analyze the functional impact of these textures, focusing on contact mechanics, friction, and wear.
• To address future challenges in understanding and utilizing two-process textures.

Main Methods:

• Development of special characterization methods for two-process textures.
• Analysis of measurement sensitivity and modeling difficulties.
• Experimental and computational studies on contact mechanics, friction, and wear.

Main Results:

• Two-process textures exhibit distinct functional properties compared to one-process surfaces.
• The plateau component influences asperity contact, while the valley component affects hydrodynamic lubrication.
• Understanding texture nature is crucial for analyzing machined element properties.

Conclusions:

• Two-process textures require specialized approaches for accurate measurement and modeling.
• Their unique characteristics significantly impact tribological behavior (friction and wear).
• Further research is needed to fully exploit the benefits of two-process textures in engineering applications.