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If the crosshead velocity of the UTM machine is v, the strain rate is given as ϒ, and the initial length of the sample is L, find the strain rate of the specimen in terms of crosshead velocity and sample length?

If the crosshead velocity of the UTM machine is v, the strain rate is given as ϒ, and the initial length of the sample is L, find the strain rate of the specimen in terms of crosshead velocity and sample length? Correct Answer v/L

Strain rate is = strain/time -> /dt; where the Lf is final length of specimen and dt is the short change in time -> 1/L -> v/L So strain rate is directly proportional to crosshead velocity.

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