Mechanical Extensometer

An Extensometer is a method that is used to amount changes in the length of an object. Its name comes from "extension-meter”. Its Measuring Range is 0-3 mm; Gauge length adjustable from 30-120 mm. Specimen size is around 1 to 20 mm or flat up to 20*20 mm. Net weight is 0.3kg approximately. It is useful for stress-strain measurements and tensile tests.

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Detailed Description for Mechanical Extensometer

An extensometer is a device that is used to measure changes in the length of an object. It is useful for stress-strain measurements and tensile tests. Its name comes from "extension-meter". It is an attachment to Universal Testing Machine and Tensile Testing Machines, used to find out the proof stress at the required elongation percentage. It measures the elongation of a test piece on load for the set gauge length.

 

Mechanical Extensometer is an attachment to Universal /Tensile Testing Machines. It measures the elongation of a test piece on load for the set gauge length. The least count of measurement is 0.01 mm and maximum elongation measured is upto 3mm.This elongation measurement helps in finding out the proof stress at the required elongation percentage.

FEATURES :

It is an attachment to Universal Testing Machine and Tensile Testing Machines, used to find out the proof stress at the required elongation percentage.

It measures the elongation of a test piece on load for the set gauge length.

Least count of measurement 0.01 mm and maximum elongation measured upto 3 mm.

Adjustable gauge length from 30 mm to 120 mm

Round specimen from 1 mm to 20 mm dia and flat specimen from 1 mm to 20 mm thickness can be accommodated.

WORKING PRINCIPLE : 

·         The required gauge length (between 30 to 120mm) is to be set by adjusting the upper knife edges and the scales.

·         Hold the test specimen in the upper and lower jaw of Tensile / Universal Testing Machine.

·         Position the Extensometer on the specimen. Position Upper clamp to press upper knife on the specimen.

·         The extensometer will now be fixed to the specimen by spring pressure. Set zero on both the dial gauges.

·         Start loading the test specimen and take the reading of load on the machine at required elongation or the elongation at required load.

·         For better accuracies mean of both dial gauge readings should be taken as elongation.

 


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