Stress : A measure of the average amount of force exerted per unit area. Deformations measure a structure’s response under a load, and calculating that deformation is an important part of mechanics of materials. Strength : It is the resistance by which materials oppose the deformation. SUMMARY: Tensile tests of material specimens are carried out for the purpose of experimental determination of mechanical characteristics: yield stress, tensile strength, true tensile strength, elongation and relative narrowing after rupture. F is the force acting on the area A.: Strain : The deformation of materials caused by the action of stress.

But regardless of the property being described, “strength” typically refers to a material’s resistance to failure, either through fracture or excessive deformation. Time-dependent recoverable deformation under load is known as an elastic deformation, while the characteristic recovery of temporary deformation after the removal of the load as a function of time is called elastic after-effect.
Firstly, the effect of MgO and steel fibers on the compressive strength of concrete was compared. To reduce the cracking caused by shrinkage and avoid the brittle behavior of concrete, MgO expansion agent and steel fibers were used in this paper.

Axial deformations are caused by axial loads and angles of twist are causes by torsion loads. Strength of Materials Laboratory Manual Prof. K. Ramesh Department of Applied Mechanics ... whole is compressed or elongated but this overall deformation comes about due to torsional/bending deformation of the spring wire. The term “strength” can be used with various material properties (tensile strength, yield strength, shear strength, etc.). The elastic […]

It is also known as engineering stress or nominal stress. Temporary deformation is also called elastic deformation, while the permanent deformation is called plastic deformation. Being essentially a measure of a material’s resistance to creep deformation, creep strength is deduced from the material’s ability to resist microstructural dislocation movement. Knowledge of torsion and bending is essential Deformation calculations come in a wide variety, depending on the type of load that causes the deformation. where s is the average stress.
Other names for creep include material creep and cold flow. OBJECTIVE: Determination of the mechanical characteristics of the material under tension.