Corrosive environment sensor, corrosive environment measuring apparatus and corrosive environment control system
US5556596A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 21, 1994 |
| Grant date | Sep 17, 1996 |
| Priority date | — |
| Expiry date | Sep 21, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2203/024
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A corrosive environment sensor comprises an elongate metal member having a pair of beam portions, each extending in a length direction between first and second ends of the metal member, and having a crack growth portion formed therein and extending in the length direction of the metal member from a crack starting end toward the second end, wherein the crack starting end is at an intermediate position between the first and second ends of the metal member and is between the pair of beam portions, a changeable load member having an expansible chamber disposed between the beam portion around the first end of the metal member and a means for supplying pressurized fluid to the expansible chamber. The changeable load member applies a load to the crack growth portion and the means for supplying pressurized fluid to the expansible chamber is responsible for ensuring that the displacement of the beam portions is accomplished in such a manner so as to provide a constant stress intensity factor at a crack growing point.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.