Method for estimating steel rupture starting point, device for estimating steel rupture starting point, and program for estimating steel rupture starting point
US11946856B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 24, 2019 |
| Grant date | Apr 2, 2024 |
| Priority date | — |
| Expiry date | Apr 16, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N33/2045
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
To estimate a fracture starting point of steel due to hydrogen embrittlement with high accuracy. A steel fracture starting point estimation device includes a hydrogen concentration distribution calculation unit adapted to calculate a hydrogen concentration distribution in steel-to-be-estimated when the steel fractures due to hydrogen embrittlement; a local critical hydrogen content calculation unit adapted to calculate critical hydrogen content at which the steel-to-be-estimated fractures due to hydrogen embrittlement; and a fracture starting point estimation unit adapted to read the hydrogen concentration distribution out of a storage unit. To estimate, calculate, from the hydrogen concentration distribution, a location in the steel in which hydrogen concentration of the critical hydrogen content is distributed, and designate the location in the steel as the fracture starting point of the steel-to-be-estimated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.