Shock tube: Extending dynamic traceability to the high-pressure regime
| Reference number | |
| Coordinator | RISE Research Institutes of Sweden AB |
| Funding from Vinnova | SEK 650 000 |
| Project duration | November 2022 - December 2024 |
| Status | Completed |
Important results from the project
The main goal of the project to develop the shock tube (our candidate primary standard for dynamic pressure calibration) and to establish traceability in the high-pressure range was achieved. The shock tube now can be operated in three different configurations that complement each other and pressure range from 0.1 MPa up to 25 MPa with frequency from a few hundred hertz up to 500 kHz can be realized. An article showing the results has been written and will be submitted for publication.
Expected long term effects
Development of the shock tube leads to the ability to performing comparisons with other national metrology institutes to validate the potential primary standards and methods for dynamic pressure calibration. This in turn is a step forward to publishing the first internationally accepted calibration method for dynamic pressure. Dynamic calibration services for pressure sensors in the high pressure range up to 25 MPa will be available.
Approach and implementation
The project was carried out through the following activities: Design and construction of the extension tube. Initial measurements, the results were not good. Simulation calculations. Design and construction of a new amplification system consists of an extension tube attached smooothly to a new conversion section. Performing of experiments and characterizing of a pressure sensor with different configurations. Result analysis and calculation of the uncertainty budget. Writing of an article.