Method for estimating a roughness of a surface

US9297632B2 · kind B2 · utility

Assignee

• COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES · FR

Inventors

• Christelle Godin · Grenoble, FR
• Loris Olmos · Vienne, FR

Key dates

• Filing date: May 21, 2013
• Grant date: Mar 29, 2016
• Expiry date: May 17, 2034

Classification

• Technology area (CPC G): Physics
• CPC primary: G01B5/28
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A method for estimating a roughness R of a surface is provided, including: measuring, during relative movement of at least one force sensor in a direction roughly parallel to the surface, at least one force Fortho perceived by the at least one force sensor in a direction which is roughly orthogonal to said direction of movement, and parallel to said surface; calculating at least one statistical parameter P representative of variations of the value of the measured at least one force Fortho; and estimating the roughness R by calculating R=f(P), where f(P) is a function of the at least one statistical parameter P having at least some coefficients with values that are dependent on characteristics of the at least one force sensor used, and on a force with which the at least one force sensor is applied on said surface during the relative movement.