xv
Prods .............................................................................60
Yokes .............................................................................60
Coils ..............................................................................60
Air-Core Coil Longitudinal Magnetization ...........................................60
Fill-Factor Coils ..................................................................60
Magnetic Particle Indications ...........................................................62
Indications ........................................................................62
Generation of Indications ........................................................62
Interpretation of Indications ......................................................62
Evaluation of Indications .........................................................62
Magnetic Writing ...................................................................63
Lesson 10 Quiz ........................................................................65
Lesson 11: Advanced Principles of Demagnetization ........................................67
Purpose ..............................................................................67
Principles of Operation for Demagnetization ..............................................67
Requirements to Demagnetize ..........................................................67
Reasons to Demagnetize ............................................................67
Reasons Not to Demagnetize ........................................................68
Demagnetization Methods ..............................................................68
Heating above Curie Point ..........................................................68
Electromagnetic Demagnetization ...................................................68
Alternating Current Demagnetization .................................................68
Direct Current Magnetization ........................................................69
Yoke Demagnetization ..............................................................69
Demagnetization Practices .............................................................69
Lesson 11 Quiz ........................................................................71
Lesson 12: Magnetic Particle Testing Equipment ............................................73
Stationary Equipment ..................................................................73
Portable Equipment ....................................................................73
Multidirectional Equipment ..............................................................73
Dry Powder Test Equipment .............................................................74
Powder Selection ..................................................................74
Powder Applications ................................................................74
Applicators ........................................................................74
Wet Visible Test Equipment ..............................................................74
Particle Selection ...................................................................75
Black Powder Concentrate .......................................................75
Red Powder Concentrate ........................................................75
Suspension Characteristics .......................................................75
Particle Concentrates ...........................................................75
Media .........................................................................75
Surface Preparation for Wet Method ..................................................75
Prods .............................................................................60
Yokes .............................................................................60
Coils ..............................................................................60
Air-Core Coil Longitudinal Magnetization ...........................................60
Fill-Factor Coils ..................................................................60
Magnetic Particle Indications ...........................................................62
Indications ........................................................................62
Generation of Indications ........................................................62
Interpretation of Indications ......................................................62
Evaluation of Indications .........................................................62
Magnetic Writing ...................................................................63
Lesson 10 Quiz ........................................................................65
Lesson 11: Advanced Principles of Demagnetization ........................................67
Purpose ..............................................................................67
Principles of Operation for Demagnetization ..............................................67
Requirements to Demagnetize ..........................................................67
Reasons to Demagnetize ............................................................67
Reasons Not to Demagnetize ........................................................68
Demagnetization Methods ..............................................................68
Heating above Curie Point ..........................................................68
Electromagnetic Demagnetization ...................................................68
Alternating Current Demagnetization .................................................68
Direct Current Magnetization ........................................................69
Yoke Demagnetization ..............................................................69
Demagnetization Practices .............................................................69
Lesson 11 Quiz ........................................................................71
Lesson 12: Magnetic Particle Testing Equipment ............................................73
Stationary Equipment ..................................................................73
Portable Equipment ....................................................................73
Multidirectional Equipment ..............................................................73
Dry Powder Test Equipment .............................................................74
Powder Selection ..................................................................74
Powder Applications ................................................................74
Applicators ........................................................................74
Wet Visible Test Equipment ..............................................................74
Particle Selection ...................................................................75
Black Powder Concentrate .......................................................75
Red Powder Concentrate ........................................................75
Suspension Characteristics .......................................................75
Particle Concentrates ...........................................................75
Media .........................................................................75
Surface Preparation for Wet Method ..................................................75