Method for compiling equivalent acceleration spectrum of creep under variable temperatures and loads
US11650143B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 29, 2022 |
| Grant date | May 16, 2023 |
| Priority date | — |
| Expiry date | Apr 29, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2203/0676
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Disclosed is a method for compiling an equivalent acceleration spectrum of creep under variable temperatures and loads. The method includes following steps: respectively carrying out a material high-temperature tensile test, material high-temperature creep tests and creep tests under two-stage variable temperatures and loads, and calculating values of a parameter p in a creep damage accumulation model under two-stage variable temperatures and loads; based on a nonlinear damage accumulation model under multi-stage variable temperatures and loads, calculating a damage D caused by a multi-stage variable temperatures and loads creep load spectrum by utilizing values of parameter p; based on the principle of consistency of damage D, transforming the multi-stage variable temperatures and loads creep load spectrum into an equivalent acceleration spectrum of a first-order maximum creep load, and finally compiling the equivalent acceleration spectrum of creep under variable temperatures and loads.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.