3D Surface Roughness and Wear Measurement, Analysis and Inspection
non-contact optical 3d measurement of aircraft engine, 4d inspec surface gauge, courtesy 4D Technology and BP Aero

When is “non-contact measurement” important?

January 9, 2023

For surface roughness measurement, it would seem like “non-contact” methods would always be preferable. After all, being able to measure a surface with no possibility of contact damage would always

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Michigan Metrology holiday greetings 2022

Seasons Greetings from Michigan Metrology

December 20, 2022

We wanted to take a moment to wish everyone a great season and happy new year. We’d like to express our gratitude for making it through all of the “peaks

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Capillarity and Wetting Phenomena - Drops Bubbles Pearls Waves, Pierre-Gilles de Gennes, Françoise Brochard-Wyart, David Quéré, 2003

Capillarity and Wetting Phenomena: Drops, Bubbles, Pearls, Waves

December 12, 2022

Pierre-Gilles de Gennes, Françoise Brochard-Wyart, David Quéré, 2003 When I started the Surface Roughness, Texture and Tribology class some 20 years ago I searched for good descriptions of the physics

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Surface Roughness, Texture, and Tribology class and workshop, which will be held in Livonia, Michigan, May 3–5. 2023

Register for the Spring “Roughness, Texture, and Tribology” class and workshop

December 5, 2022

Registration is open for the Roughness, Texture, and Tribology class and workshop, which will be held in Livonia, Michigan, May 3–5. 2023. This live, in-person class offers a unique opportunity to learn

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bearing ratio parameter ratios, spk/sk, svk/sk, spk/svk surface texture parameters

Ratio Parameters (Spk/Sk, Svk/Sk, Spk/Svk)

November 30, 2022

Tracking the ratio of several bearing ratio parameters can provide information about the symmetry of the surface texture, which can sometimes be more important than the amplitudes of the peaks

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Benoit Mandelbrot and fractal mathematics

Remembering Benoit Mandelbrot

November 16, 2022

Benoit Mandelbrot, whose birthday we commemorate on November 20, found commonality in the math that describes patterns and distributions in nature and modern life. Mandelbrot saw order in phenomena that

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ASME B46.1 standard for surface roughness, waviness, and lay

What is ASME B46.1?

November 8, 2022

The American Society of Mechanical Engineers’ ASME B46.1 standard defines surface roughness, waviness, and lay, as well as parameters for specifying and controlling surface texture. Learn what it covers and

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surface roughness cutoff wavelengths - surface texture filtering - michigan metrology

What do you do if you don’t know the cutoff length?

November 1, 2022

Cutoffs define the band of spatial wavelengths that will be included in the calculation of surface texture parameters. Per specifications, the cutoffs must be specified. So, what do you do

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Anton van Beek Advanced Engineering Design is an essential engineering resource for tribology and surface metrology.

Advanced Engineering Design: Lifetime Performance and Reliability

October 25, 2022

In my office I have dozens of books that I consider primary engineering texts. But there are a few that I consider essential. Anton van Beek’s Advanced Engineering Design is

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Sa does not equal Ra!

October 18, 2022

Ra, the roughness average (or average roughness), is the average of the surface heights along a measurement trace. Sa is the average roughness over a measurement area. Can we calculate

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