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access icon free Surface roughness characterisation using optical feedback interferometry

The characterisation of surface roughness is important in process control and metrology. A simple, low cost sensor which can be used for this measurement is one based on laser optical feedback interferometry. A target containing samples of similar abrasive paper with different levels of roughness was characterised using a sensor based on this technique, and the resulting measurements show that the standard deviation of the optical feedback signal was proportional to the roughness of the surface.

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      • 9. Łukianowicz, C., Iaquinta, J.: ‘Assessment of surface topography of abrasive sheets by light scattering and self-shadowing methods’, Arch. Civil Mech. Eng., 2005, 2, pp. 7184.
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http://iet.metastore.ingenta.com/content/journals/10.1049/el.2016.4134
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