Non-contact acoustic inspection method for additive manufacturing processes
US10073060B2 · kind B2 · utility
5Cited by
28References
17Claims
0Family size
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Key dates
| Filing date | Nov 19, 2015 |
| Grant date | Sep 11, 2018 |
| Priority date | — |
| Expiry date | Apr 21, 2036 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P10/25
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for inspecting an additive manufacturing process in which a directed energy source is used to create a weld pool at an exposed build surface of a mass of powdered material, and selectively fuse the powdered material to form a workpiece. The inspection method includes: using a noncontact method to generate an acoustic wave in the build surface; using a noncontact method to measure displacement of the build surface in response to the acoustic wave; and determining at least one sub-surface material property of the workpiece by analyzing the displacement of the build surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.