Table of Contents
What do you mean by strain gauge?
A strain gauge is a type of electrical sensor. It’s primary use is to measure force or strain. The resistance of a strain gauge changes when force is applied and this change will give a different electrical output. Strain gauges use this method to measure pressure, force, weight and tension.
What is lathe dynamometer?
Lathe Tool Dynamometer is a cutting force measuring instrument used to measure the cutting forces coming on the tool tip on the Lathe Machine. The sensor is designed in such a way that it can be rigidly mounted on the tool post, and the cutting tool can be fixed to the sensor directly.
What is strain gauge and what is its principle?
What is the working principle of Strain Gauge. A strain gauge works on the principle of electrical conductance and its dependence on the conductor’s geometry. Whenever a conductor is stretched within the limits of its elasticity, it doesn’t break but, gets narrower and longer.
What is the application of strain gauge?
Strain gauges are used to measure the torque applied by a motor, turbine, or engine to fans, generators, wheels, or propellers. This equipment is found in power plants, ships, refineries, automobiles and industry at large.
Why is a strain gauge important?
The strain gauge is one of the most important sensor of the electrical measurement technique applied to the measurement of mechanical quantities. Thus, strain gauges can be used to pick up expansion as well as contraction. The strain of a body is always caused by an external influence or an internal effect.
How does the strain gauge work?
Strain gauges convert the applied force, pressure, torque, ect., into an electrical signal which can be measured. Force causes strain, which is then measured with the strain gauge by way of a change in electrical resistance. Then the voltage measurement is gathered using data acquisition.
What is strain gauge dynamometer?
A strain-gauge dynamometer system in the form of a body of rotation is simple to make and convenient to use; some such gauges are available as circular plates for clamping on the outside diameter, with the load applied to a rigid center [I]. The wire device is mounted near the rim.
What is eddy current dyno?
What is the Eddy Current Dynamometer? An eddy current dynamometer is an electromechanical energy conversion device, which converts mechanical energy to electrical energy. It fundamentally uses Faraday’s Law of electromagnetic induction as its working principle.
What is strain gauge load cell?
A strain gauge load cell is comprised of a solid metal body (or “spring element”) on which strain gauges have been secured. The body is usually made of aluminum, alloy steel, or stainless steel which makes it very sturdy but also minimally elastic.
Which type of transducer is strain gauge?
Strain Gauge is a passive transducer that converts a mechanical elongation or displacement produced due to a force into its corresponding change in resistance R, inductance L, or capacitance C. A strain gauge is basically used to measure the strain in a work piece.
How do you read a strain gauge?
Therefore, to measure the strain, you have to accurately measure very small changes in resistance. For example, suppose a test specimen undergoes a strain of 500 me. A strain gage with a GF of 2 exhibits a change in electrical resistance of only 2 (500 x 10-6) = 0.1%. For a 120 Ω gage, this is a change of only 0.12 Ω.