Method for estimating hydrogen absorption behavior, device for estimating hydrogen absorption behavior, and program for estimating hydrogen absorption behavior
US11506649B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 24, 2019 |
| Grant date | Nov 22, 2022 |
| Priority date | — |
| Expiry date | Sep 26, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N33/2022
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
To estimate penetration behavior of hydrogen up until hydrogen content reaches saturation even if load stress on steel is equal to or higher than threshold stress. A hydrogen penetration behavior estimation device includes a first measurement data input unit adapted to input first measurement data concerning variation of hydrogen content with time up until hydrogen content in steel-to-be-estimated reaches saturation when measurements are taken by applying such stress to the steel that no hydrogen embrittlement fracture occurs; a second measurement data input unit adapted to input second measurement data concerning variation of hydrogen content in the steel-to-be-estimated with time up until the steel fractures when measurements are taken by applying such stress to the steel that hydrogen embrittlement fracture occurs; a ratio calculation unit adapted to calculate increases in hydrogen contents in an initial stage of measurement and calculate a ratio of the second measurement data to the first measurement data in terms of increase in hydrogen content; and a saturated hydrogen content calculation unit adapted to multiply saturated hydrogen content based on the first measurement data …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.