Stiffness measurement method and device
US9618434B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 31, 2013 |
| Grant date | Apr 11, 2017 |
| Priority date | — |
| Expiry date | Jan 13, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01L5/28
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A calculating device of the stiffness measurement device pressurizes an object to be measured with a predetermined pressure and the stiffness of the object to be measured in the squeal frequency band is calculated based on an inclination of a stress-displacement performance curve immediately after a start of depressurization after the pressurization. According to this device, there is no need to oscillate the object with a high frequency band and there is no need to enhance the stiffness of the housing of the measurement device, which leads to a downsizing of the device. Further, there is no need for measuring of acceleration speed of the object to be measured and accelerator can be eliminated to reduce the cost of the stiffness measurement device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.