Method of measuring the effect of mechanical strain on ferromagnetic fibers
US11169034B2 · kind B2 · utility
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9Claims
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Key dates
| Filing date | Jan 25, 2019 |
| Grant date | Nov 9, 2021 |
| Priority date | — |
| Expiry date | Jan 16, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2203/0635
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Disclosed herein is a concrete material comprising between 0.5% and 10% ferromagnetic fibres. Also disclosed herein is a method for measuring the strain state of a concrete material, the method comprising forming solid concrete containing between 0.5% and 10% ferromagnetic fibres in a random distribution throughout the concrete, applying an oscillating EM current to the concrete, and detecting the associated EM fields within the concrete. Also disclosed herein is the use of an oscillating EM current field to measure the strain state within a concrete material comprising between 0.5% and 10% ferromagnetic fibres.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.