Method and system of non-destructive testing for composites
US11442045B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 29, 2020 |
| Grant date | Sep 13, 2022 |
| Priority date | — |
| Expiry date | Sep 14, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2119/02
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Method and system are disclosed for characterizing and quantifying composite laminate structures. The method and system take a composite laminate of unknown ply stack composition and sequence and determine various information about the individual plies, such as ply stack, orientation, microstructure, and type. The method and system can distinguish between weave types that may exhibit similar planar stiffness behaviors, but would produce different failure mechanisms. Individual ply information may then be used to derive the laminate bulk properties from externally provided constitutive properties of the fiber and matrix, including extensional stiffness, bending-extension coupling stiffness, bending stiffness, and the like. The laminate bulk properties may then be used to generate a probabilistic failure envelope for the composite laminate. This provides the ability to perform non-destructive QA to ensure that individual lamina layup was accomplished according to specifications, and results may be used to identify a numerous laminate properties beyond purely structural.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.