Method for the -destructive detecting of ageing symptoms of a component having regularly recurring structures

Patent metadata

Field	Value
Publication number	US-11940499-B2
Application number	US-202017431159-A
Country	US
Kind code	B2
Filing date	Jan 20, 2020
Priority date	Feb 22, 2019
Publication date	Mar 26, 2024
Grant date	Mar 26, 2024

Abstract

A method for the non-destructive detecting of ageing symptoms of a component having regularly recurring structures, includes the following steps: a) scanning the component in the region of the recurring structures in a plurality of scanning planes which extend parallel to one another to create at least one scanning image set having a plurality of two-dimensional scanning images, wherein the scanning images show a plurality of inhomogeneities; b) automatically identifying those inhomogeneities that form recurring patterns, and those inhomogeneities that do not follow a recurring pattern, using a suitable algorithm; and c) detecting ageing symptoms exclusively on the basis of those inhomogeneities which are identified in step b) and do not follow a recurring pattern.

First claim

The invention claimed is:

1. A method for non-destructive detection of signs of aging of a component having regularly recurring structures, comprising:
a) scanning the component in a region of the recurring structures in a plurality of scanning planes which extend parallel to one another, creating at least one scanning image set having a plurality of two-dimensional scanning images, wherein the scanning images show a multiplicity of inhomogeneities;
b) automatically identifying those inhomogeneities that form recurring patterns and those inhomogeneities that do not follow a recurring pattern, using a suitable algorithm; and
c) detecting signs of aging exclusively on the basis of those inhomogeneities identified in step b) that do not follow a recurring pattern;
wherein the regularly recurring structures are one or more winding layers wound around a winding bar.

2. The method as claimed in claim 1 ,
wherein the regularly recurring structures are multi-dimensionally produced structures.

3. The method as claimed in claim 1 ,
wherein the scanning in step a) is carried out by using a terahertz, ultrasound or tomography testing technique or an optical analysis in accordance with reflection, absorption or transmission methods, or a combination of a plurality of these methods and techniques.

4. The method as claimed in claim 1 ,
wherein the scanning image set produced in step a) is assigned to a specific region of the component.

5. The method as claimed in claim 1 ,
wherein the detection carried out in step c) is done visually by a person,
wherein during the detection the inhomogeneities identified in step b) that do not follow a recurring pattern are masked out of the scanning images or specially marked.

6. The method as claimed in claim 5 ,
wherein the scanning images of the at least one scanning image set are displayed to the person carrying out the detection above one another and/or under one another on a monitor.

7. The method as claimed in claim 1 ,
wherein the detection carried out in step c) is done automatically by using a further algorithm.

8. The method as claimed in claim 1 ,
wherein the inhomogeneities identified in step b) that do not follow a recurring pattern are optically highlighted in the scanning images.

9. The method as claimed in claim 1 ,
wherein a position and/or type and/or extent of the signs of aging detected in the context of the analysis are identified and stored.

10. A device,
wherein the device is set up to carry out a method as claimed in claim 1 .

11. The method as claimed in claim 1 ,
wherein the regularly recurring structures are winding layers of an insulating tape of stator winding insulation or of a rotor cap.

12. The method as claimed in claim 2 ,
wherein the regularly recurring structures are multi-dimensionally produced structures comprising 3D-printed rib, support, spring or supporting elements or structures which define cavities or channels.

13. The method as claimed in claim 8 ,
wherein the inhomogeneities identified in step b) that do not follow a recurring pattern are marked in color.

Assignees

• Siemens Energy Global Gmbh & Co Kg
• Siemens Energy Global Gmbh &Co Kg

Inventors

• Mashkin Andrey
• Hansmann Daniel
• Pohlmann Friedhelm
• Schmidt Guido

Classifications

• G01R31/346 Primary

  Testing of armature or field windings · CPC title

• G01R31/308

  using non-ionising electromagnetic radiation, e.g. optical radiation {(investigating or analysing materials by the use of optical means G01N21/00; image analysis G06T7/00)} · CPC title

• G06T7/0006 Primary

  using a design-rule based approach · CPC title

• G06T7/97

  Determining parameters from multiple pictures (depth or shape recovery from multiple images G06T7/55; stereo camera calibration G06T7/85) · CPC title

• H02K3/32

  Windings characterised by the shape, form or construction of the insulation · CPC title