Impact Test: SHPB
Come to see how different candies break under shock using Split-Hopkinson Pressure Bar (SHPB)
What is it used for?
The SHPB is a piece of equipment used to measure the amount of force and level of deformation on an object.
How does it work?
A sample is placed between two bars – called the incident bar and the transmission bar. By striking the incident bar, a stress wave is created.
This wave is split into two waves upon reaching the sample: the transmitted wave; which travels through the sample and the transmission bar, causing the sample to deform, and the reflected wave; which travels back from the sample and back through the incident bar.
The measurements are taken on the strain gauges that are placed on the incident and transmission bars
Did you know?
The SHPB you see here is a portable version we built in our lab! Commercial-grade SHPBs can be much heavier.
Using this SHPB, we are testing three samples: a gumball, a jawbreaker and a Skittle. Which one do you think will be the last one standing?
In our group, the SHPB plays a key role in our research into the use of MOFs as reusable energy absorbers.
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