Material Testing Definations

Interinsic properties: basic characteristic of materials behavior which can not be changed like strength, modulus of elasticity etc

Attributive properties: properties that can be changed with time according to factors like price and availability of materials

Hardness: it's the material's ability to resist scratch

Stiffness: it's the material's ability to resist loads without deformation

Strength of materials: material's ability to resist the applies stress

Tensile strength: it's the stress at which the material breaks or permanently deforms

Stress: it's the force per unit area

Strain: it's the elongationin dimension per unit length

Elastic modulus: it's the mathematical description of a metal's tendency to be deformed elastically

Young's modulus (E): It's the measure of the stiffness of an isotropic elastic material. aslo known as modulus of elasticity , elastic modulus

Stress-Strain curve: it's a graphical representation of the relationship between stress and strain

Yield strength: it's the stress at which material strain changes from elastic deformation to plastic deformation

Ultimate strength: It's the maximum stress a material can withstand when subjected to tension, compression or shearing

Ductility: is the mechanical property used to describe to which material can be defromed plastically without fracture

Necking: a localized deformation decreases the cross-section at some random point

Dangerous section: the region immediately adjecent to the point of maximum bending moment

Moment of Inertia: it's the beam ability to resist bending

dah elly tawasalnalo le 7ad ma weselna ta2reban

to be continued isa