Non-destructive evaluation of internal damage in fiber reinforced composite materials by delivery of a two-part magnetic nanoparticle chemistry
US10782266B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 31, 2017 |
| Grant date | Sep 22, 2020 |
| Priority date | — |
| Expiry date | May 15, 2038 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29L2031/737
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method of making a fiber reinforced composite material having a two-part liquid solution forming magnetic nanoparticles. The method includes the steps of preparing a fiber reinforced composite having dispersed fibers and a polymer matrix and having a plurality of vascular channels therethrough. A first liquid solution is incorporated in at least one of the vascular channels and a second liquid solution is incorporated in at least one other of the vascular channels. When the liquid solutions are joined together because of damage or cracking to the composite, the liquids form a ferrous magnetic material. Non-destructive evaluation of internal damage to the fiber reinforced composite material may be accomplished by magnetic field disturbance detection, thermal detection, or visual detection.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.