Method for determining joint stiffness degradation
US6564156B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 13, 2001 |
| Grant date | May 13, 2003 |
| Priority date | — |
| Expiry date | Mar 15, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2291/2638
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method of determining joint stiffness degradation in structure 10 is provided including a first exciting of the structure 18, a first measuring of transfer function and frequency response function 20, simulating a mileage accumulation process of the structure 16 performed after the first exciting 18 and the first measuring 20, a second exciting of the structure 22, performed after the simulating a mileage accumulation process 16, a second measuring of frequency response function 24 performed after the simulating a mileage accumulation process 16 and calculating the change in joint stiffness 26 using the first measuring 20 and the second measuring 24.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.