3D Surface Roughness and Wear Measurement, Analysis and Inspection
Surface texture - a bearing surface may look shiny as it wears because the peak material with short spatial wavelengths has been removed during the run-in period. Michigan Metrology

Why do some bearings look shiny with wear?

April 25, 2023

We tend to think of “new” surfaces as shiny and smooth, and “worn” surfaces as rough, dull, or uneven. But for a bearing surface, the opposite is often true: the

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surface texture filtering animation - Michigan Metrology

Visualizing “filtering” — an animation

April 18, 2023

Surface texture can be described as a spectrum of spatial wavelengths. “Filtering” is the process to isolate the wavelengths that matter for our application. But what does that really look

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A lotus leaf is Superhydrophobic due to both the surface energy of its waxy coating and the spatial wavelengths of its surface texture

A plant with self-cleaning leaves?

March 29, 2023

A lot of effort goes into creating materials that can resist sticking, repel water, or keep oils off of cell phone screens. But some plants are able to accomplish tasks

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Surface roughness of paint - surface texture is a spectrum of spatial wavelengths, and by examining different ranges within that spectrum we can spot differences that we might miss if we only track the overall average roughness

Paint finish and spatial wavelengths

March 14, 2023

Two lots of steel pass inspection for surface roughness. Yet, when we paint a panel from each lot, one looks great, and the other…does not. How can it be, when

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surface roughness comparator, tactile gage

How do I calibrate my fingernail?

February 28, 2023

Tactile gages (comparator strips) can aid in quick assessment of a process, but they have limitations for process control. We look at their strengths and weaknesses in this blog post.

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Surface roughness and friction, 3-part series looks at the case of dry, sliding friction and discuss how surface roughness and materials impact the surface as a bearing. Graph of real area of contact vs plasticity, Bharat Bhushan

Which surface textures & materials make good bearings? Pt. 3

February 13, 2023

In this 3-part series we look at the case of dry, sliding friction and discuss how surface roughness and materials impact the surface as a bearing. Download this 3-Part Series

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Bearings, Plasticity is a function of surface roughness and material properties

Which surface textures & materials make good bearings? Pt. 2

February 7, 2023

In this 3-part series we look at the case of dry, sliding friction and discuss how surface roughness and materials impact the surface as a bearing. Download this 3-Part Series

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Surface roughness and friction, 3-part series looks at the case of dry, sliding friction and discuss how surface roughness and materials impact the surface as a bearing.

Which surface textures & materials make good bearings? Pt. 1

January 30, 2023

In this 3-part series we look at the case of dry, sliding friction and discuss how surface roughness and materials impact the surface as a bearing. Download this 3-Part Series

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Curling and surface roughness - the ice for curling is a precision surface, manufactured following precise processes and controlled by metrology

Curling again! Applying the lessons of micro-texture to the macro texture of curling ice

January 23, 2023

We’ve had a lot going on related to ice lately! It is that time of year… A few months ago, we posted an article about the sport of curling, which

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ice and friction, ice skate on ice, Michigan Metrology

Ice and friction – there’s a lot going on!

January 19, 2023

Want to maximize your fun while skating? Make sure that the ice temperature is -7°C! For many years I thought that concentrated pressure is what melts the ice when you

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