the fugitive
- 11
- 0
yeh so can sum one please ansa me...? how big is a strain guage? n how big shud the metal strip be? n wot metal shud be used? please tel me !
Thats what I'm thinking of doing and I'm supposed to be doing it this afternoon!the fugitive said:at the end of the strip...ther gna be a hole for a weight hanger to han g from it n then aply 0.1 kg weights to it one by one...is that stupid or ok?
CKLi said:Hi! Try this website to find out more about Strain gauges. www.dur.ac.uk/richard.scott/gauges.html[/URL][/QUOTE]
Thanks for that link, I had no idea what this was all about :confused: before but reading that sorted everything out in my head and helped me to understand the theory behind it all. i now know exactly what I have to do! :smile: :biggrin: :approve: :smile: :smile:
Is what you mentioned both parts of the experiment?firstkings said:the experiment is in two parts...
stretch a piece of wire . Add a mass, measure the resistance of the strain gauge. No wheatstone bridge, no crane. Glue (superglue) the strain gauge to the wire. keep adding masses (weights), keep measuring V and I. etc
firstkings said:the experiment is in two parts...
stretch a piece of wire . Add a mass, measure the resistance of the strain gauge. No wheatstone bridge, no crane. Glue (superglue) the strain gauge to the wire. keep adding masses (weights), keep measuring V and I. etc
devil_uk said:a drilled hole about 10mm from the bottom
longhairedbean said:http://www.allaboutcircuits.com/vol_1/chpt_9/7.html
Well I read that the full wheatstone bridge is more sensitive on the exact same website that u mentioned. Its stated towards the end. As for how it is connected, i can't draw it 4 u at the moment my paint is ****edso I can't draw at all which helps but I'll try & describe it to u. I am only using one strain gauge and 4 resistors. Set it up in a full bridge circuit except replace the gauges with resitors so u get r1,r2,r3,r4 and there will also be a volt meter in the middle to pick up slight changes in electrical resistance and a voltage supply. If one of the resistors experience anything, this results in an unbalance and something comes up on the voltmeter.
This probably sounds confusingbut I was never good at explaining!
thespacedevil said:never use super glue! it will melt the strain gauge... that the whole point of superglue... to melt the two substances together...it will damage the gauge...trust me.....dont use superglue