- #71
marieke
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how do you attach the weight to the strain gauge and connect it to the circuit at the same time? is there a paritcular way to plug wires in a strain gauge? please answer quickly!
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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 ****ed so 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 confusing but I was never good at explaining!
are you sure that will happen, as my physic's teacher hinted at using superglue , - if this is the case techniqually, would we loose marks in planning to use this as it is really just a theoretical experiment (as it were) as we arent really carrying it out... oh well i will keep it as it is for now and ask my teacher tomorowthespacedevil 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
A strain gauge is a type of sensor used to measure the strain or deformation of an object. It works by converting the physical force applied to the object into an electrical signal, which can then be measured and analyzed.
A strain gauge typically consists of a thin wire or foil that is attached to the surface of the object being measured. As the object is deformed, the wire or foil stretches or compresses, causing a change in its electrical resistance. This change in resistance can be measured and converted into a strain value.
Strain gauges have a wide range of applications in various industries, including aerospace, automotive, civil engineering, and biomechanics. They are commonly used to measure the strain and stress on structures, machinery, and materials, as well as in the development of new products and materials.
The accuracy of strain gauge measurements depends on various factors, such as the quality of the gauge, the type of installation, and the calibration process. Generally, strain gauges can provide accurate measurements with an error margin of less than 1%.
Calibrating a strain gauge involves applying known amounts of force or strain to the object being measured and recording the corresponding electrical signals from the gauge. These signals are then compared to a calibration curve or equation to determine the relationship between the force or strain and the gauge's output.