Hi, I am writing this post to see if anyone has familiarity with Hopkinson Pressure Bars.
I am using a modified Hopkinson Pressure bar in compression experiments with a specimem holder that allows a Mixed Mode I/II fracture on specimens. My lab doesn't have a transmission bar, so we have to initiate the fracture on the first pulse. Does anyone have familiarity with this?
I have manufacured numerous of different compositions and finally got it to initiate crack on the 2nd tension pulse, why is this not good enough?
I will share videos and more details about specimen and specimen holder if asked.
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