Assemblies formed by additive manufacturing, radar absorbing structures, and related methods
US11135763B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 2, 2018 |
| Grant date | Oct 5, 2021 |
| Priority date | — |
| Expiry date | May 25, 2039 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29K2995/0003
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An assembly formed by additive manufacturing comprises a top face sheet, a bottom face sheet, and a core structure between the top face sheet and the bottom face sheet, the core structure comprising a plurality of cells, wherein structural elements of the core structure defining the plurality of cells exhibit at least one electrical property in at least one direction varying from at least one electrical property in a second, different direction and at least one structural property in at least one direction varying from at least one structural property in a second, different direction, wherein at least a portion of the structural elements comprises a radar absorbing structure, the structural elements comprising a matrix material and at least one additive dispersed in or on the matrix material. Related radar absorbing structures and related methods of fabricating the radar absorbing structures are also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.