Using pyrometry to identify porosity in additively manufactured structures
US11623408B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 12, 2020 |
| Grant date | Apr 11, 2023 |
| Priority date | — |
| Expiry date | Jul 18, 2041 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P10/25
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method and apparatus for identifying porosity in a structure made by an additive manufacturing process in which a laser is scanned across layers of material to form the structure. Pyrometry data comprising images of the layers acquired during additive manufacturing of the structure is received. The pyrometry data is used to generate temperature data comprising estimated temperatures of points in the layers in the images of the layers. The temperature data is used to identify shapes fit to high temperature areas in the images of the layers. Conditions of the shapes fit to the high temperature areas in the images of the layers are identified. Outlier shapes are identified in the shapes fit to the high temperature areas in the images of the layers using the conditions of the shapes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.