xviii
Magnetic Particle Testing Lecture Guide l CONTENTS
Magnetized Test Block ..............................................................96
Block Standard Measurements .......................................................96
Electronic Reference Standards .........................................................96
Hall Effect Meters ..................................................................96
Eddy Current Devices ...............................................................97
Summary .............................................................................97
Lesson 14 Quiz ........................................................................99
Lesson 15: Quality Control .............................................................101
Introduction .........................................................................101
New Materials ....................................................................101
In-Use Materials ...................................................................101
Bath Degradation ....................................................................101
Material Contamination ............................................................101
Evaporation Losses ................................................................102
Heat Degradation .................................................................102
Process Degradation ..............................................................102
Material Control Requirements .........................................................102
Use of Settling Test .................................................................102
Ultraviolet Radiation and Facilities ......................................................103
Ultraviolet Radiation Intensity Requirements ...........................................103
Ambient Light Measurements ....................................................104
Ultraviolet Light Measurement ...................................................104
Variables .........................................................................104
Line Voltage Variations ..........................................................104
Service and Aging Variations ....................................................104
Ultraviolet Lamp Hazards ...........................................................104
Proper Procedures ....................................................................105
Variation in Technique .............................................................105
Selection of Current ...............................................................105
Current Application Choices ........................................................106
Selection of Media ................................................................106
Selection of Technique .............................................................106
Field Orientation ..................................................................106
Head Shot ....................................................................106
Central Conductor .............................................................107
Longitudinal Field ..............................................................107
Sensitivity Requirements ............................................................107
Lesson 15 Quiz .......................................................................109
Quiz Keys ...........................................................................111
Magnetic Particle Testing Lecture Guide l CONTENTS
Magnetized Test Block ..............................................................96
Block Standard Measurements .......................................................96
Electronic Reference Standards .........................................................96
Hall Effect Meters ..................................................................96
Eddy Current Devices ...............................................................97
Summary .............................................................................97
Lesson 14 Quiz ........................................................................99
Lesson 15: Quality Control .............................................................101
Introduction .........................................................................101
New Materials ....................................................................101
In-Use Materials ...................................................................101
Bath Degradation ....................................................................101
Material Contamination ............................................................101
Evaporation Losses ................................................................102
Heat Degradation .................................................................102
Process Degradation ..............................................................102
Material Control Requirements .........................................................102
Use of Settling Test .................................................................102
Ultraviolet Radiation and Facilities ......................................................103
Ultraviolet Radiation Intensity Requirements ...........................................103
Ambient Light Measurements ....................................................104
Ultraviolet Light Measurement ...................................................104
Variables .........................................................................104
Line Voltage Variations ..........................................................104
Service and Aging Variations ....................................................104
Ultraviolet Lamp Hazards ...........................................................104
Proper Procedures ....................................................................105
Variation in Technique .............................................................105
Selection of Current ...............................................................105
Current Application Choices ........................................................106
Selection of Media ................................................................106
Selection of Technique .............................................................106
Field Orientation ..................................................................106
Head Shot ....................................................................106
Central Conductor .............................................................107
Longitudinal Field ..............................................................107
Sensitivity Requirements ............................................................107
Lesson 15 Quiz .......................................................................109
Quiz Keys ...........................................................................111