The crash sled test facility essentially consists of two rails on which different carriages (sleds) can roll. These carriages are accelerated by up to ten rubber ropes (high-performance bungee ropes) over a distance of approx. 10 m. In the impact area, the carriage can be braked in a targeted manner by a multi-layer and multi-stage bending plate brake, or it is possible to place a test body in the impact area, which is generally irreversibly deformed during the experiment.
![Square tube](https://www.hsu-hh.de/ft/wp-content/uploads/sites/718/2021/02/DSC_2982-1024x681.jpg)
Test Rig Data
- Sled weigth (aluminum and steel slide): 120 kg – 900 kg
- Impact energy: up to 150 kJ
- Impact velocity: up to 20 m/s
- Impact area: up to 6m3
- Measurement technology: Two high-speed cameras, laser-based distance measurement, acceleration sensors up to 1000 g
Applications/Projects
![Tyre Soil Interaction](https://www.hsu-hh.de/ft/wp-content/uploads/sites/718/2021/03/Crash_Reifen_04-1024x1024.jpg)
Tyre-Soil-Interaction
Interaction of tyres with deformable soils (here: sand): In this special test setup, the interaction of a tyre with a non-cohesive soil (sand) was investigated. This type of interaction comes into play, for example, when a vehicle skids and slides sideways into the shoulder. The picture shows a tire with the sled behind it (view against the direction of travel).
![Crash Example](https://www.hsu-hh.de/ft/wp-content/uploads/sites/718/2021/03/Spot_Weld-1024x609.png)
Spot welds
In several test series, spot welds were investigated with regard to their strength with the help of a small aluminum sled (low energy). A special profile was chosen in order to investigate the welding points with respect to both head pull and shear loads. The picture on the left shows exemplary results from a high-speed video.
![Battery Crash](https://www.hsu-hh.de/ft/wp-content/uploads/sites/718/2021/03/Schlitten_Batterie-1024x435.jpg)
Batteries
Investigation of the behaviour of batteries in a crash-like load for the creation of crash battery models.
Letzte Änderung: 23. March 2021