Orientation Effect on Puncture Test

  • #1

Main Question or Discussion Point

Hello All,

Quick question regarding a testing procedure. I am currently tasked with determining if a test can be performed in a vertical orientation. This is in opposition to the current horizontal set up of the test. Currently, we test needle sharpness horizontally by attaching a device to a force gauge. Then we advance a membrane toward the device/force gauge assembly and record the peak force required for the needle to penetrate the membrane. If we were to move this test to a vertical alignment, would the force values change, and if so, would their difference be problematic in relating to the previous set up? We were just going to test the two different setups, however, since sharpness decreases with every membrane penetration, there is no way to test both fixtures with the same device effectively.

Let me know if the situation needs any clarification.

Thanks for your help, and I apologize if this is in the wrong forum.

Dave
 

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