Repeatable shocks

Important results from the project

Through this project, a new method has been implemented to initiate shock waves in the national laboratory´s intended standard for dynamic pressures. The new method utilizes a commercially available fast-opening valve and enables the realization of dynamic pressures in a continuous pressure range with higher repeatability than previously possible. Furthermore, the time taken to operate the valve is very low, which increases the availability and amount of measurements that can be carried out with the equipment of the national laboratory.

Expected long term effects

The project has resulted in the national laboratory´s equipment for realizing dynamic pressures being able to deliver high-quality measurements at a pace that was previously unthinkable. Results of the evaluation carried out under this project will be submitted to a scientific journal. Repeatable controlled measurements are now delivered that increase understanding of dynamic pressure measurement and contribute to the establishment of metrological traceability.

Approach and implementation

The approach of comparing several methods of initiation was successful not only because it showed advantages and disadvantages of each method in relation to the others. The approach was also appropriate for identifying general limitations in the system that apply to all shock wave initiation methods. This is of great benefit to the continued work to establish a national standard for dynamic pressures.