Homework SourseDiscuss two applications ie uses for each the following mech
Solution
YIELD STRENGTH: The stress at which a material exhibits deviation from proportionality limit of stress -strain curve. An offset of 0.2% is used for many metals.It is a material property.
applications:
1. It gives the stress value ,beyond which material will udergo permanent or plastic deformation
2. Below the yield strength ,the material will undergo elastic deformation and returns to there original position after the removal of load
ULTIMATE STRENGTH: It is the maximum stress that material can withstand without failure .It is the feature of stress -strain curve but it is not present in true stress -true strain curve.
applications:
1.This gives the value of maximum stress that a material can withstand under load conditions
2.Beyond the UTS, the material will undergo irregular deformations leading to necking
DUCTILITY: The ability of material to undergo large plastic deformation prior to its fracture .It is streching of material under tensile loads.
applications:
1.It gives the information material is ductile or brittle in nature.
2.more the ductility more will be machinability and more will be deformation of material
TOUGHNESS: The total area under stress -strain curve.It is also known as the amount of energy absorbed prior to its fracture.
applications:
1. It is the measure of resistance to shock loading.
2.It is highly desirable quality for structral and machine parts to withstand vibrations
MODULUS OF RESILIENCE: It is the amount of energy absorbed with in the elastic region.resilience per unit volume gives the value of modulus of resilience.
applications:
1.The quantity gives the capacity of material bears shock and vibrations.
2. It is used in springs (better to absorb large energy).
applications:
1.
