MATERIAL PROPERTIES & BEHAVIOUR

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MATERIAL PROPERTIES AND BEHAVIOUR

CREEP

FACTOR AFFECTING CREEP

HEAT TREATMENT

GRAIN SIZE

COMPOSITION

TEMPERATURE

LOAD

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

FATIGUE

THREE STAGES OF FATIGUE FAILURE

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

THE CRACK GRADUALLY PROPAGATES AS THE LOAD CONTINUES TO CYCLE

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

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

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

FAILURE UNDER CYCLIC STRESS

PHYSICAL &CHEMICAL PROPERTIES

MELTING POINT

DENSITY

CORROSION

MAGNETIC PROPERTIES

FRACTURE MECHANISM

BRITTLE FRACTURE

RAPID RUN OF CRACKS THROUGH A STRESSED MATERIAL

OCCURS WITH LITTLE OR NO PLASTIC DEFORMATION

DUCTILE FRACTURE

OCCURS WITH PLASTIC DEFORMATION

ELECTRICAL PROPERTIES

ELECTRICAL RESISTANCE

ELECTRICAL CONDUCTIVITY

THERMAL PROPERTIES

THERMAL STRESSES

THERMAL CONDUCTIVITY

THE ABILITYOF A MATERIAL TO TRANSPORT HEAT

THERMAL EXPANSION

HEAT CAPACITY

THE ABILITY TO ABSORB HEAT

MECHANICAL PROPERTIES

DUCTILITY

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

PLASTICITY

THE ABILITY OF A MATERIAL TO BE CHANGE IN SHAPE PERMANENTLY

ELASTICITY

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

HARDNESS

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

BRITTLENESS

DISABILITY OF A MATERIAL TO UNDERGO PLASTIC DEFORMATION

TOUGHNESS

ABILITY OF A MATERIAL'S RESISTANCE TO FRACTURE.

STRENGTH

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