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Electronic Extensionmeters
Electronic Extensionmeters
This instrument is to be used on Tensile or Universal testing machines to find out
Proof stress & Young’s modulus values.In case of many brittle materials such
as high carbon steels, alloy steels, light aluminium & magnesium alloys, it is
difficult to get yield values. For such materials stress corresponding to a certain
allowable amount of plastic deformation is termed as proof stress say 0.1% or
0.2% proof stress. The measuring range is upto 5mm & resolution is 0.001mm.
Standard two fixed gauge lengths of 25 & 50 mm is provided. Different sizes
gauge lengths can also be given at an additional cost. If this extensometer is
ordered with a computerized UTM, then a special menu driven application
software is provided, which accepts load & extension values, & evaluates
proof stress values. The measurement accuracy satisfies all requirements
of class-I as per IS:12872-1990.