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| Surface Metrology This tutorial is intended for people who would like begin to apply, or to advance their applications of, surface metrology in research, product and process design, and in quality assurance. Physical, chemical, and biological interactions with surfaces are all influenced by the textural, or geometric, properties of the surfaces, i.e., roughness. These include scattering, adhesion, wetting, exchanges, corrosion, friction, and fouling. Surface textures are influenced by manufacturing and use, e.g., machining, abrasive processing, wear, etching, and fracture. Successful discrimination of surfaces based on their textures, and correlation of surface textures with performance or processing parameters, depend on appropriate measurement systems and analysis methods. Consideration of scale is important to successful discrimination and correlation. Geometric properties of rough surfaces, e.g., area, length, slopes, filling, and complexity, can depend on the scale of observation. The scale ranges over which surfaces can be discriminated or correlated with performance can improve the understanding of interactions with surfaces. Scale-based geometric analysis can also be used to compare and understand resolution and noise in texture measurement systems. This tutorial will teach how to correlate surface textures with properties and processes and to discriminate acceptable and unacceptable surface textures. Terms and techniques for length-scale and area-scale analyses in the recent American and pending ISO standards will be covered. Attendees will also learn how to select the sampling size and sampling interval for effective texture measurements. The selection of effective measurement systems for discrimination and correlation will also be covered.
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