Introduction to Surface Topography Measurement

The surface of an object is one of its most important characteristics and can very often define the performance of the object as a whole: whether the object grips for traction, slides smoothly in motion, repels water for hygiene, or cleanly focusses starlight. Surface topography – the local shape/form/geometry and texture/finish of a surface – is usually critical to engineered part performance and has been the focus of a long history of measurement and study.

This course will introduce learners to the measurement, analysis and characterisation of surface topography, and the role of calibration and standards.

Learners who successfully complete the course will receive an NPL Certificate of Completion.

Learning Outcomes

Appreciate why it is important to measure and control the surfaces of manufactured objects and understand why the use of standard surface texture parameters increases confidence in measurement
Understand how surfaces can be represented mathematically as a surface topography, and how that topography can be filtered for the relevant length scales and summarised using surface texture parameters
Be aware that surface topography can be measured using different kinds of measuring instruments, and that metrological characteristics are used to quantify important strengths and weaknesses of these instruments
Understand the general concept of calibration and adjustment, as relevant to surface topography measurement
Be more familiar with the terminology and the standardisation framework surrounding the metrology of surfaces