NDT MAGNETIC PARTICLE INSPECTION
LVL1&2
WHAT ARE THE (3) BASIC STEPS TO PERFORMING AN ADEQUATE MAGNETIC PARTICLE
TEST? - ANS-ESTABLISH THE FIELD , APPLY THE PARTICLES, AND EVALUATE
WHAT TYPE OF PARTICLES ARE USED WHEN INSPECTIONS ARE TYPICALLY
PERFORMED USING A STATIONARY UNIT? - ANS-FLUORESCENT PARTICLES
WHAT IS THE DEFINITION OF FERROMAGNETIC ? - ANS-A MATERIAL THAT HAS A
HIGHLY ATTRACTIVE EFFECT WHEN A MAGNETIC FIELD IS APPLIED?
WHAT IS THE RESULT WHEN THE ALIGNMENT OF MAGNETIC DOMAINS DEVELOPS A
FORCE THAT IS THE SUM OF THE MAGNETIC DOMAINS? - ANS-A MAGNETIC FIELD IS
FORMED
WHAT BEST DESCRIBES THE ATTRIBUTES OF A MATERIAL WITH LOW PERMEABILITY? -
ANS-HARD TO MAGNETIZE, HIGH COERCIVE FORCE, HIGH RELUCTANCE, HIGH
RETENTIVITY
IF AN INDICATION IS VISIBLE, WHAT CAN WE SUMMARIZE REGARDING THE
ORIENTATION OF THE INDICATIONS AND THE MAGNETIC FIELD? - ANS-THE INDICATION
LIES BETWEEN 45degrees TO 90degrees TO THE MAGNETIC FIELD
WHAT IS THE DEFINITION OF RELUCTANCE? - ANS-THE ABILITY OF A MATERIAL TO
OPPOSE A MAGNETIC CHARGE
WHAT IS THE ABILITY TO RETAIN MAGNETISM AFTER THE MAGNETIC FIELD HAS BEEN
REMOVED? - ANS-RETENTIVITY
WHAT IS THE DIFFERENCE BETWEEN HEAD SHOTS AND COIL SHOTS? - ANS-A HEAD
SHOT CREATES A CIRCULAR FIELD AND IS PRODUCED BY A DIRECT INDUCTION; A
COIL SHOT CREATES A LONGITUDINAL FIELD AND IS PRODUCED BY AN INDIRECT
INDUCTION
WHAT ARE DIRECT INDUCTION AND INDIRECT INDUCTION? - ANS-TWO METHODS OF
ELECTRICAL CURRENT DELIVERY THAT PRODUCE MAGNETIC FIELD
USING A PART TO COMPLETE A CIRCUIT IS AN EXAMPLE OF? - ANS-DIRECT
INDUCTION
LVL1&2
WHAT ARE THE (3) BASIC STEPS TO PERFORMING AN ADEQUATE MAGNETIC PARTICLE
TEST? - ANS-ESTABLISH THE FIELD , APPLY THE PARTICLES, AND EVALUATE
WHAT TYPE OF PARTICLES ARE USED WHEN INSPECTIONS ARE TYPICALLY
PERFORMED USING A STATIONARY UNIT? - ANS-FLUORESCENT PARTICLES
WHAT IS THE DEFINITION OF FERROMAGNETIC ? - ANS-A MATERIAL THAT HAS A
HIGHLY ATTRACTIVE EFFECT WHEN A MAGNETIC FIELD IS APPLIED?
WHAT IS THE RESULT WHEN THE ALIGNMENT OF MAGNETIC DOMAINS DEVELOPS A
FORCE THAT IS THE SUM OF THE MAGNETIC DOMAINS? - ANS-A MAGNETIC FIELD IS
FORMED
WHAT BEST DESCRIBES THE ATTRIBUTES OF A MATERIAL WITH LOW PERMEABILITY? -
ANS-HARD TO MAGNETIZE, HIGH COERCIVE FORCE, HIGH RELUCTANCE, HIGH
RETENTIVITY
IF AN INDICATION IS VISIBLE, WHAT CAN WE SUMMARIZE REGARDING THE
ORIENTATION OF THE INDICATIONS AND THE MAGNETIC FIELD? - ANS-THE INDICATION
LIES BETWEEN 45degrees TO 90degrees TO THE MAGNETIC FIELD
WHAT IS THE DEFINITION OF RELUCTANCE? - ANS-THE ABILITY OF A MATERIAL TO
OPPOSE A MAGNETIC CHARGE
WHAT IS THE ABILITY TO RETAIN MAGNETISM AFTER THE MAGNETIC FIELD HAS BEEN
REMOVED? - ANS-RETENTIVITY
WHAT IS THE DIFFERENCE BETWEEN HEAD SHOTS AND COIL SHOTS? - ANS-A HEAD
SHOT CREATES A CIRCULAR FIELD AND IS PRODUCED BY A DIRECT INDUCTION; A
COIL SHOT CREATES A LONGITUDINAL FIELD AND IS PRODUCED BY AN INDIRECT
INDUCTION
WHAT ARE DIRECT INDUCTION AND INDIRECT INDUCTION? - ANS-TWO METHODS OF
ELECTRICAL CURRENT DELIVERY THAT PRODUCE MAGNETIC FIELD
USING A PART TO COMPLETE A CIRCUIT IS AN EXAMPLE OF? - ANS-DIRECT
INDUCTION