Surface metrology courses, in video



This page provides a series of educational videos initially made in French (but some are available with English sub-titles), on surface texture analysis methods, instrumentation and other topics.
The YouTube channel is available on:  Surface metrology courses.




Introduction to surface texture characterization

This video explains why surface texture specifications are important on industrial parts and consumer products, and introduces the basis of surface texture analysis.
Duration: 12 min 50. [English sub-titles available]






Filtration and Preparation of Data



Preparation of optical measures

This presentation discusses the preparation and cleaning of surface data measured with a 3D optical profiler, in order to remove outliers and fill-in non-measured points. This operation is mandatory before the metrologic analysis in order to get sound results.
Duration: 10 min 19 [English sub-titles available]



Multiscale analysis of surfaces (Part 1)

Presentation given by Professor Christopher Brown, WPI, during a seminar organized by Digital Surf in Paris. The first part explains the concepts of observation and interaction scales and introduces multiscale analysis of surfaces.
The slides of the presentation can be downloaded in PDF:
Slides of the presentation.
Duration: 34 min 03 [French only]



Multiscale analysis of surfaces (Part 2)

Presentation given by Professor Christopher Brown, WPI, during a seminar organized by Digital Surf in Paris. The second part explains fractal methods such as length-scale, area-scale and filling-scale, initially developed in Sfrax by Chris Brown and nowadays available in MountainsMap.
The slides of the presentation can be downloaded in PDF:
Slides of the presentation.
Duration: 22 min 46 [French only]



Bandpass filtering

Presentation on bandpass filtering, which is obtained from two Gaussian filters, in order to limit the analysis bandwidth and carry-out a multiscale analysis of surfaces. It also allows functional correlations.
The slides of the presentation can be downloaded in PDF:
Slides of the presentation.
Duration: 22 min 23 [French only]



Functional correlation

Presentation given by Professor Christopher Brown, WPI, during a seminar organized by Digital Surf in Paris. This presentation explains how to determine functional correlations between the multiscale analysis of a surface and the function or performance of a part.
The slides of the presentation can be downloaded in PDF: Slides of the presentation.
Duration: 25 min 10 [French only]






Surface Texture Parameters



Amplitude parameters of ISO 4287

This video introduces amplitude parameters calculated on profiles, as defined in ISO 4287 and ASME B46.1 standards.
Duration: 8 min 16 [English sub-titles available]



Areal parameters of ISO 25178-2 (part 1)

This presentation introduces height parameters and functional parameters related to the material ratio curve, including Sk and volume parameters.

The slides of the presentation can be downloaded in PDF: Slides of the presentation.
Duration: 21 min 12 [French only]



Areal parameters of ISO 25178-2 (part 2)

This presentation introduces hybrid parameters and feature parameters calculated from the segmentation of surface features.
The slides of the presentation can be downloaded in PDF:
Slides of the presentation.
Duration: 19 min 48 [French only]






Series on surface texture measuring instruments


Part 1 - Contact profilometers

Description of the components: traverse unit, sensor, pivot, stylus. Corrections and calibration. Workshop profilometers (with skid), tabletop profilometers with column, low-force profilometers.
Duration: 21 min 50 [French only]


Part 2 - Non-contact profilometers

Architecture of a 3D non-contact profilometer. Confocal chromatic sensor, point autofocus sensor. Measuring transparent surfaces.
Duration: 16 min 35 [French only]


Part 3 - 3D confocal microscopes

Confocal optical principle. Optical slices obtained by vertical scanning. LSM, Nipkov disk, DLP matrices. Main manufacturers.
Duration: 9 min 48 [French only]


Part 4 - White-light interferometers

Principles of interferometry. From interferograms to height map. Different types of objectives. Main manufacturers.
Duration: 8 min 45 [French only]


Part 5 - Multifocus microscopes

Principle of the measurement. Advantages and drawbacks.
Duration: 3 min [French only]


Part 6 - Scanning probe microscopes

Principle of scanning probe microscopes. Atomic-force microscope, Tunneling force. Multilayer measurement.
Duration: 14 min 18 [French only]


See also: International standards for surface texture



© 2006-2017 by François Blateyron - Digital Surf