what  you must be off your rocker 

knobsmt wrote on Sep 16^th, 2018 at 10:02pm:


So, share with us, your expertise in the topic at hand.

First off, I saw Knobsmt at a shoot this weekend and discussed it a little with him.  Nobody had responded to my post and I picked on him for being a creeper on the forum for such a long time and not even having a post - maybe he ought to - looks like he budged  - if only he wouldn't spend so much time with his cows - he's very capable of producing some valuable information to many on this forum.  Thanks!

DD,
A few years ago - seems like anyway, maybe a few decades now,  I did considerable research on chamber pressures with piezo-electric transducers, never got back to it following school.  The methods prior to using this current, simple strain gage were fairly involved and deterred my interest.   
I see a little more time available on the horizon now, and with my son recently out of engineering I have considerable help working though the math and the computing (most of this doesn't even exist but in the dusty corners of my memory).
 
A firm I worked for in the not to distant past used similar strain gages as a means of measuring and comparing pressures in certain applications with considerable success.  The literature this outfit promotes has a few features I'm not aware of and since this is the forum I enjoy the most - I started a post here.
AND since my interest lies mostly in the vintage firearms most of us here are fascinated with, this will help put my mind at ease loading and shooting them.
Craigster, 
Thanks for sharing the link, I hesitate to attach links and literature even though they simplify the research for many, I assume that if someone is interested enough they'll chase it down by asking Sir Google. 
Greg

craigster: great link with information my manual doesn't have. However, my unit is the early model with a serial cable. That just shows how full the swamp is. 
My intention is to span the side of the block area on a falling block to look at actual breech thrust. A bit different than hoop stresses. 
I happen to be a great believer in the experimental method but models are good most of the time. 
I'm ADHD and it shows. Right now I'm working on a base for a fifth wheel hitch so I can go hunting in three weeks. (Selkirks). Oh, yes and repairing an aging trailer. Wish I could do the same for my body. 

When the need gets high enough I will fire up a Win98 machine and give it a whirl. I used Windoze until Linux got good enough then switched over. My wife is a Mac person so we are a computer divided family. Something l like the UK and US being divided by a common language.