MATERIAL PROPERTIES & BEHAVIOUR

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MATERIAL PROPERTIES AND BEHAVIOUR

MECHANICAL PROPERTIES

STRENGTH

THE ABILITY OF A MATERIAL TO STAND UP TO FORCES BEING APPLIED WITHOUT IT BENDING,BREAKING SHATTERING OR DEFORMING

TOUGHNESS

ABILITY OF A MATERIAL'S RESISTANCE TO FRACTURE.

BRITTLENESS

DISABILITY OF A MATERIAL TO UNDERGO PLASTIC DEFORMATION

HARDNESS

THE ABILITY OF A MATERIAL TO RESIST SCRACTCHING,WEAR AND TEAR AND INDENTION

ELASTICITY

THE ABILITY OF A MATERIAL TO ABSORB FORCE AND FLEX IN DIFFRENT DIRECTION,RETURNING TO ITS ORIGINAL POSITION

PLASTICITY

THE ABILITY OF A MATERIAL TO BE CHANGE IN SHAPE PERMANENTLY

DUCTILITY

THE ABILITY OF A MATERIAL TO CHANGE SHAPE(DEFORM) USUALLY BY STRETCHING ALONG ITS LENGTH

THERMAL PROPERTIES

HEAT CAPACITY

THE ABILITY TO ABSORB HEAT

THERMAL EXPANSION

THERMAL CONDUCTIVITY

THE ABILITYOF A MATERIAL TO TRANSPORT HEAT

THERMAL STRESSES

ELECTRICAL PROPERTIES

ELECTRICAL CONDUCTIVITY

ELECTRICAL RESISTANCE

FRACTURE MECHANISM

DUCTILE FRACTURE

OCCURS WITH PLASTIC DEFORMATION

BRITTLE FRACTURE

OCCURS WITH LITTLE OR NO PLASTIC DEFORMATION

RAPID RUN OF CRACKS THROUGH A STRESSED MATERIAL

PHYSICAL &CHEMICAL PROPERTIES

THERMAL CONDUCTIVITY

THERMAL EXPANSION

ELECTRICAL CONDUCTIVITY

MAGNETIC PROPERTIES

CORROSION

DENSITY

MELTING POINT

FATIGUE

FAILURE UNDER CYCLIC STRESS

LOWERING OF STRENGTH OR FAILURE OF A MATERIAL DUE TO REPETITIVE STRESS,WHICH MAY BE ABOVE OR BELOW THE YIELD STRENGTH

CRACKS GENERALLY GROW UNDER REPEATED LOADING TRUCKS PASSING OVER BRIDGES,BICYCLE PEDALS AND GEAR

THREE STAGES OF FATIGUE FAILURE

SMALL CRACK INITIATED AT THE SURFACE AND CAN INCLUDE SCRATCHES,PITS,SHARP CORNERS DUE TO POOR DESIGNING & ETC

THE CRACK GRADUALLY PROPAGATES AS THE LOAD CONTINUES TO CYCLE

A SUDDEN FRACTURE OF THE MATERIAL OCCURS WHEN THE REMAINING CROSS-SECTION OF THE MATERIAL IS TOO SMALL TO SUPPORT THE APPLIED LOAD

CREEP

THE TENDENCY OF A SOLID MATERIAL TO SLOWLY DEFORM PERMANENTLY UNDER THE INFLUENCE OF STRESSES

DEFINED AS THE SLOW & PROGRESSIVE DEFORMATION OF A MATERIAL WITH TIME AT CONSTANT STRESS

FACTOR AFFECTING CREEP

LOAD

TEMPERATURE

COMPOSITION

GRAIN SIZE

HEAT TREATMENT