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Ability of quality controllers to detect standard scratches on polished surfaces

Abstract : The production of polished metal surfaces addresses a large number of fields such as medical prostheses, jewellery or moulds. These surfaces are checked by people who rarely agree on the definition of the right geometry limit of scratches. The aim of this work is to study human vision of scratches. The first step was to produce calibrated scratches barely visible by the human eye on polished metal surfaces in order to define standard samples for polishing quality control. A nanoindenter with a Berkovich tip was used to produce these scratches. These standard samples were shown to polishing controllers. They were asked to perform a research task leading to the establishment of two thresholds that characterize the visualization of scratches: a visibility threshold as well as an acceptability threshold.
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https://hal-emse.ccsd.cnrs.fr/emse-00959569
Contributor : Géraldine Fournier-Moulin <>
Submitted on : Tuesday, August 24, 2021 - 6:34:42 PM
Last modification on : Friday, August 27, 2021 - 9:38:03 AM

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Théodore Puntous, Sophie Pavan, David Delafosse, Michel Jourlin, Joël Rech. Ability of quality controllers to detect standard scratches on polished surfaces. Precision Engineering, Elsevier, 2013, 37 (4), pp.924-928. ⟨10.1016/j.precisioneng.2013.03.001⟩. ⟨emse-00959569⟩

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