First Complete Tests
Today we added all three soils to one of the hoppers and ran some tests with the entire experiment assembled.
Here are Jon and Nick working on getting the vibration exciter set up.
It's good to finally see one of the hopper assemblies complete with all three soils inside. The soils are from left to right: NU-LHT, JSC-1A, and play sand.
Here's the entire experiment set up. The only components missing in this picture are the charge amplifier and oscilloscope used to measure the vibrations in the hopper. A small accelerometer will make those measurements and will be mounted on the outside of the hopper.
We took some videos of a couple test runs as well.
This first run shows the soils flowing with the vibration exciter running at about 25 Hz.
This second video shows the soils flowing without the vibration exciter running. Surprisingly, the vibrations did not have as much of an affect as we had expected, nor did the NU-LHT simulant resist flowing as much as anticipated. We will be doing a few more tests, but at least we have shown that the equipment works well.
Just two days left to make final preparations before we leave for Houston. Everyone seems excited for the trip, but we're also focused on getting everything ready before we leave. Once we are in Houston, there will be some time on Thursday for equipment assembly when we can make last minute tests and adjustments if needed.
Here are Jon and Nick working on getting the vibration exciter set up.
It's good to finally see one of the hopper assemblies complete with all three soils inside. The soils are from left to right: NU-LHT, JSC-1A, and play sand.
Here's the entire experiment set up. The only components missing in this picture are the charge amplifier and oscilloscope used to measure the vibrations in the hopper. A small accelerometer will make those measurements and will be mounted on the outside of the hopper.
We took some videos of a couple test runs as well.
This first run shows the soils flowing with the vibration exciter running at about 25 Hz.
This second video shows the soils flowing without the vibration exciter running. Surprisingly, the vibrations did not have as much of an affect as we had expected, nor did the NU-LHT simulant resist flowing as much as anticipated. We will be doing a few more tests, but at least we have shown that the equipment works well.
Just two days left to make final preparations before we leave for Houston. Everyone seems excited for the trip, but we're also focused on getting everything ready before we leave. Once we are in Houston, there will be some time on Thursday for equipment assembly when we can make last minute tests and adjustments if needed.
posted by B Schlueter at 5:57 PM
1 Comments:
That's weird. The time for the flow with the vibration is longer than without (I checked with a stopwatch while watching the video). We'll have to see what happens with more testing.
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