Products > Test Equipment
Capture Peak Strain Gage Fluctuation For Shotgun Chamber Pressure Measurement
<< < (3/11) > >>
nctnico:
I'm not sure what the defacto standard is for measuring pressures in guns but my gut feeling says a piezo transducer could be suitable as well or even a better choice. Such transducers are also used to detect & measure knocking (premature ignition of the mixture) in car engines. A piezo transducer (a simple disc shaped one) can be stuck onto the gun and you won't need any amplification at all to capture the waveform with an oscilloscope.
Silver_Is_Money:

--- Quote from: nctnico on December 16, 2023, 04:31:43 pm ---I'm not sure what the defacto standard is for measuring pressures in guns but my gut feeling says a piezo transducer could be suitable as well or even a better choice. Such transducers are also used to detect & measure knocking (premature ignition of the mixture) in car engines. A piezo transducer (a simple disc shaped one) can be stuck onto the gun and you won't need any amplification at all to capture the waveform with an oscilloscope.

--- End quote ---
That should work, but it sounds overly expensive.
Silver_Is_Money:
What DSO brands and models might be up to the task without completely breaking the bank?  I was looking at mid-lower end Silgent, Hantek, OWON, and Rigol.
Silver_Is_Money:
It appears that peak strain occurs at roughly 0.3 ms (+/- 1 ms) after firing a shotgun.
babysitter:
Scope bandwith is way more than necessary.
High excitation, high amplification could be necessary.
Placement of sensor or several sensors might be critical for you depending on what you want to know, remember there might be several things travelling back and forth and in different directions (direct and reflected shockfront in gas column inside, backblow acceleration on barrel, shockfront on ambient gas, superimposing themselves in front of each other)

Pressures don't want to be measured.

BR
Hendrik
Navigation
Message Index
Next page
Previous page
There was an error while thanking
Thanking...

Go to full version
Powered by SMFPacks Advanced Attachments Uploader Mod