Surface Texture Metrology

A set of vocabulary flashcards focused on key concepts related to surface texture metrology, capturing definitions and parameters essential for understanding engineering surfaces and their measurements.

Surface Texture

The characteristics and features of a manufactured or machined surface, affecting its performance in engineering applications.

Fatigue Life

The number of stress reversals a component can withstand before failure caused by repeated stresses.

Roughness

Irregularities in surface texture resulting from the cutting process.

Waviness

Irregularities in surface texture caused mainly by machine vibrations and deflections during cutting.

Errors of Form

Deviations from the intended geometrical shape of a component.

Lubrication Film

A layer of lubricant that prevents direct metal-to-metal contact between bearing surfaces.

Bearing Properties

Characteristics of a surface that influence its ability to support loads and reduce friction.

Surface Defects

Irregularities or imperfections on a surface that can initiate fatigue failure.

Measurement Instrumentation

Tools and devices used to assess and quantify surface texture.

Calibration

The process of configuring a measurement instrument to provide accurate results.

Comparative Measurements

Assessment method where roughness is evaluated based on visual or tactile comparisons.

National Standards

Established benchmarks for surface texture measurement parameters.

Mechanical Stylus

A device used in surface texture measurement to trace the surface profile.

Amplifier

An electronic component that increases the magnitude of a signal in measurement systems.

Surface Integrity

The condition of a surface that influences its functional properties and performance.

Machining Processes

Various methods used to manufacture components, affecting their surface texture.

Rz Parameter

The maximum peak-to-valley height of the profile, assessing surface roughness.

Rp Parameter

The maximum height of peaks in the surface texture measurement.

Rv Parameter

The maximum depth of valleys in the surface texture measurement.

Assessment Length

The length over which surface texture parameters are averaged and measured.

Scraping

Traditional method of finishing bearing surfaces to maintain lubrication.

Surface Area of Contact

The area where two surfaces interact, influencing wear rates.

Fatigue Failures

Failures caused by repeated stresses leading to material breakdown.

Operational Life

The duration a component can function effectively before failure.

Visual Tactile Method

Early engineering method using touch and sight for surface assessment.

ISO 16610

An international standard that specifies magnifications and filters for surface texture measurement.

Surface Roughness Standards

Established metrics that categorize and quantify surface roughness.

Contact Load

The force exerted per unit area at the point of contact between surfaces.

Composite Integrity

The quality and stability of composite materials, influenced by surface texture.

Quantifying Surface Texture

The process of assigning numerical values to aspects of surface roughness and waviness.

Profile Measurement

The analysis of the surface contours and features used in texture evaluation.

Operating Conditions

The environmental factors under which a component functions, affecting its performance.