Surface Analysis

CEMMNT provides you with a complete surface analysis and measurement solution, including the measurement of surface finish, surface roughness, surface roundness, surface form, profile, depth, wear, and dimensional tolerance...

Surface Analysis services include:

Stylus profilometry - measures form, dimension, texture, and step height. A diamond stylus is traversed across the component or surface under test. Undulations in the surface and the overall shape are traced by the stylus and digitised to provide a 2D or 3D surface map. Stylus profilometry can scan long areas with sub-nanometre vertical resolution. Advances in tip technology and staging now allow steep sided surfaces to be accurately profiled.

Roundness measurement - enables quality control of nominally circular and cylindrical products by testing the accuracy of their form. The component is rotated on a highly accurate spindle that provides a circular datum. During rotation, a transducer with ball tipped stylus measures radial variations of the component with respect to the spindle axis. Adding a vertical column datum and a radial arm datum, allows circular traces, which can be combined to give a measure of cylindricity, flatness, and squareness.

Optical profilometry - delivers rapid non-contact 3D surface analysis. Using an interferomic lens the recombinant reflected light results in interference maxima at best focus providing sub-nanometre level vertical resolution and lateral resolution down to 0.5 micrometres. Automated stages allow large area images to be obtained whilst maintaining high lateral resolution. The thickness of transparent films can be measured and interface structures characterised.

Confocal and laser scanning profilometry - provides a flexible approach to non-contact 3D mapping of a wide variety of products in many different materials. The choices of gauges, scanning speeds, and data spacing enables the optimum solution to best fit the metrology challenge.

In the last 2 years CEMMNT have provided surface analysis and measurement solutions to over 100 organisations, providing clients with access to the widest range of contact and non-contact surface measurement techniques in the UK. Through an unparalleled combination of state-of-the-art facilities, high precision techniques and industry-leading expertise, customers are guaranteed the highest levels of accuracy in their results.

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