US 11,650,170 B2 · Method for detecting a critical defect in a ceramic rolling element

Abstract

Method for detecting at least one critical defect in a ceramic rolling element providing the steps of capturing a plurality of two-dimensional digital radiographic images of the ceramic rolling element; digitally filtering each radiographic image; delineating, on the basis of the filtered image, at least one region liable to comprise the critical defect; constructing stereoscopically a virtual model of the ceramic rolling element having the region; comparing the dimensions of the delineated region with a plurality of predetermined threshold values, and, when the dimensions are greater than the threshold values, generating an alarm signal.

Claims10

Dependent claims

A method for detecting at least one critical defect in a ceramic rolling element, comprising:

capturing at least one two-dimensional digital radiographic image of the ceramic rolling element;
digitally filtering the at least one two-dimensional digital radiographic image;
delineating, on a basis of the at least one digitally filtered two-dimensional digital radiographic image, at least one region liable to comprise the at least one critical defect in the ceramic rolling element;
constructing stereoscopically a virtual model of the ceramic rolling element comprising the at least one region;
comparing dimensions of the at least one delineated region with a plurality of predetermined threshold values, and
generating an alarm signal when the dimensions are greater than the plurality of predetermined threshold values.

3 more elements

A device for detecting at least one critical defect in a ceramic rolling element, comprising:

a photographic sensor that is configured to capture a two-dimensional digital radiographic image of the ceramic rolling element;
a digital filter configured to filter the two-dimensional digital radiographic image;
modelling means configured to delineate, on a basis of the filtered two-dimensional digital radiographic image, at least one region liable to comprise the at least one critical defect in the ceramic rolling element, and to construct a stereoscopic image of a virtual model of the ceramic rolling element comprising the at least one region;
and
a computing unit configured to compare dimensions of the at least one delineated region with a plurality of predetermined threshold values, and to generate an alarm signal when the dimensions are greater than the threshold values.

2 more elements

Dependencies are inferred from the claim text.

Method for detecting a critical defect in a ceramic rolling element

Life of this patent

Method for detecting a critical defect in a ceramic rolling element

Life of this patent

Abstract

Claims10