one -one example (Hardness, strength, elasticity, plasticity, malleability, Ductility, Brittelness, toughness , fatigue ,creep).
Answers
Explanation:
Material Properties
The properties of materials under the action of external forces called loads are known as mechanical properties. They are a measure of the strength and lasting characteristics of a material in service and are of great importance, particularity to the design engineer. Some of the important mechanical properties of materials are discussed below
Elasticity
Elasticity is that property of a material by virtue of which deformation caused by applied by applied load disappears upon removal of the load. In other words, the elasticity of a material is its power of coming back to its original position after deformation when the stress or load is removed. Steel and Wrought iron are the examples of the elastic materials
Plasticity
The plasticity of a material is its ability to undergo some degree of permanent deformation without rupture or failure. This property is important in forming, shapping, extruding and many other hot and cold working processes. Materials such as clay, lead etc., are plastic at room temperature. Steel is plastic when at bright red heat. Generally, plasticity increases with increase in temperature
Stiffness
The resistance of a material to elastic deformation or deflection is called Stiffness. A material which undergoes slight deformation under load has a high degree of stiffness. This property assumes significance in the design of beams, shafts, springs etc. If the material follows Hooke’s law its stiffness is measured by the Young’s Modulus E. The higher this value the stiffer the material
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