Post on 14-Apr-2018
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S.H. JONDHALE POLYTECHNICPRESENTATION ON : STRAIN GAUGE MEASUREMENT
NAME : DINESH S. BORSE
Under the guidance ofProf. Vinod S. Thombre-Patil
HOD of Mechanical Dept.2013
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INTRODUCTION
A strain gauge is a device used to measure
the strain of an object.
Invented by Edward E.
Simmons and Aurthur C. Ruge in 1938.
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DEFINATION
A strain gauge is an example of passive
transducer that converts a mechanical
displacement into a change of resistance.
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WORKING
The resistance of strain gauge wire is
directly proportional to the mechanical
stress applied on it.
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TYPES OF STRAIN GAUGES
Based on principle of working Mechanical
Electrical
Optical
Based on Mounting Bonded Strain Gauges
Unbonded strain Gauges
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Mechanical Gauges
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Optical Gauges
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Electrical Gauges
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BONDED STRAIN GAUGES
Wire type
Foil type
Semiconductor
type
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UNBONDED STRAIN GAUGES
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ROSETTES
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LOAD CELLS
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APPLICATIONS
Strain Measurement
To measure tension, torque & force.
Vibration Measurement
Compression & tension measurement
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ADVANTAGES
There is no moving part.
It is small in size.
Cost is low.
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DISADVANTAGES
It is non-linear
It need to be calibrated
Very sensitive to change in Temp.
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Let see, How to use strain gauge
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THANK YOU !!!