Thermomechanical methodology for stabilizing shape memory alloy (SMA) response
US8409372B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 2, 2010 |
| Grant date | Apr 2, 2013 |
| Priority date | — |
| Expiry date | Aug 20, 2031 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC21D2211/008
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Methods and apparatuses for stabilizing the strain-temperature response for a shape memory alloy are provided. To perform stabilization of a second sample of the shape memory alloy, a first sample of the shape memory alloy is selected for isobaric treatment and the second sample is selected for isothermal treatment. When applying the isobaric treatment to the first sample, a constant stress is applied to the first sample. Temperature is also cycled from a minimum temperature to a maximum temperature until a strain on the first sample stabilizes. Once the strain on the first sample stabilizes, the isothermal treatment is performed on the second sample. During isothermal treatment, different levels of stress on the second sample are applied until a strain on the second sample matches the stabilized strain on the first sample.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.