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Utm
1. Why it is called universal testing machine?
This machine is used to test the tensile and compressive properties of material. The
reason Universal Testing machine is named so because it can perform all the
tests right from compression, bending to tension and examine the material in all
mechanical properties
Modulus of Elasticity = Stress (with in the elastic limit)/Strain.
Yield stress = (Load at yield point /original c/s area)
Ultimate stress = (Ultimate Load/ original c/s area.)
Nominal Wreaking Stress = (Breaking load / Nominal Breaking Stress)
Actual Breaking Stress = (Breaking load / neck area)
Percentage elongation = (Change in Length/ Original length) x 100
Percentage reduction in area= (Change in Length/Original area) x100