MATERIAL PROPERTIES & 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