Paisarn Muneesawang, Suchart Yammen
Visual Inspection Technology in the Hard Disk Drive Industry
Herausgeber: Muneesawang, Paisarn; Yammen, Suchart
Paisarn Muneesawang, Suchart Yammen
Visual Inspection Technology in the Hard Disk Drive Industry
Herausgeber: Muneesawang, Paisarn; Yammen, Suchart
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A presentation of the use of computer vision systems to control manufacturing processes and product quality in the hard disk drive industry. Visual Inspection Technology in the Hard Disk Drive Industry is an application-oriented book borne out of collaborative research with the world's leading hard disk drive companies. It covers the latest developments and important topics in computer vision technology in hard disk drive manufacturing, as well as offering a glimpse of future technologies.
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A presentation of the use of computer vision systems to control manufacturing processes and product quality in the hard disk drive industry. Visual Inspection Technology in the Hard Disk Drive Industry is an
application-oriented book borne out of collaborative research with the world's leading hard disk drive companies. It covers the latest developments and important topics in computer vision technology in hard disk drive manufacturing, as well as offering a glimpse of future technologies.
application-oriented book borne out of collaborative research with the world's leading hard disk drive companies. It covers the latest developments and important topics in computer vision technology in hard disk drive manufacturing, as well as offering a glimpse of future technologies.
Produktdetails
- Produktdetails
- ISTE
- Verlag: Wiley & Sons
- 1. Auflage
- Seitenzahl: 316
- Erscheinungstermin: 11. Mai 2015
- Englisch
- Abmessung: 240mm x 161mm x 22mm
- Gewicht: 645g
- ISBN-13: 9781848215917
- ISBN-10: 1848215916
- Artikelnr.: 38545270
- ISTE
- Verlag: Wiley & Sons
- 1. Auflage
- Seitenzahl: 316
- Erscheinungstermin: 11. Mai 2015
- Englisch
- Abmessung: 240mm x 161mm x 22mm
- Gewicht: 645g
- ISBN-13: 9781848215917
- ISBN-10: 1848215916
- Artikelnr.: 38545270
Paisarn Muneesawang, PhD, Associate professor in computer engineering, School of Electrical and Electronic Engineering Nanyang Technological University, Singapore. Suchart Yammen, PhD, Assistant professor in electrical engineering, Department of Electrical and Computer Engineering, Naresuan University, Phisanulok, Thailand.
PREFACE xi CHAPTER 1. FEATURE FUSION METHOD FOR RAPID CORROSION DETECTION
ON POLE TIPS 1 Suchart YAMMEN and Paisarn MUNEESAWANG 1.1. Introduction 2
1.2. Algorithm for corrosion detection 6 1.2.1. Extraction of top-shield
region 6 1.2.2. Area-based feature 9 1.2.3. Contour-based feature 13 1.3.
Experimental result 19 1.3.1. Distribution of corrosion 20 1.3.2.
Performance metric 20 1.3.3. Robustness 24 1.4. Conclusion 27 1.5.
Bibliography 28 CHAPTER 2. NONLINEAR FILTERING METHOD FOR CORROSION
DETECTION ON POLE TIPS 33 Paisarn MUNEESAWANG and Suchart YAMMEN 2.1.
Introduction 33 2.2. Perpendicular magnetic recording 35 2.3. Perpendicular
magnetic recorder and corrosion 37 2.3.1. Lubricant layer 38 2.3.2. Thermal
effect results in corrosion 41 2.3.3. Recording head/slider manufacturing
and corrosion 42 2.4. Length estimator for pole tip 44 2.5. Nonlinear
filtering as a corrosion detector 48 2.5.1. Median filter techniques 48
2.5.2. Median "¿-Filter 50 2.5.3. Corrosion detection procedure 51 2.6.
Application 54 2.7. Conclusion 62 2.8. Bibliography 63 CHAPTER 3. MICRO
DEFECT DETECTION ON AIR-BEARING SURFACE 71 Pichate KUNAKORNVONG and
Pitikhate SOORAKSA 3.1. Introduction 71 3.2. Air-bearing surface 74 3.3.
Imaging system 75 3.4. Contamination detection 79 3.4.1. Texture unit
texture spectrum 80 3.4.2. Graylevel co-occurrence matrix 82 3.4.3.
Principle component analysis 85 3.4.4. Identification defect 88 3.5.
Conclusion 92 3.6. Acknowledgment 93 3.7. Bibliography 93 CHAPTER 4.
AUTOMATED OPTICAL INSPECTION FOR SOLDER JET BALL JOINT DEFECTS IN THE HEAD
GIMBAL ASSEMBLY PROCESS 99 Jirarat IEAMSAARD and Thanapoom FUANGPIAN 4.1.
Introduction 99 4.2. Head gimbal assembly 101 4.3. Vertical edge method for
inspection of pad burning defect 102 4.3.1. Inspection procedure 103 4.3.2.
Experimental result 107 4.4. Detection of solder ball bridging on HGA 108
4.4.1. Solder ball bridging defect 108 4.4.2. Chain code descriptor-based
method 109 4.4.3. Morphological template-based method 112 4.4.4.
Experimental result 114 4.5. Detection of missing solders on HGA 121 4.5.1.
Image acquisition and enhancement 121 4.5.2. Clustering of image pixels 122
4.5.3. Decision making 123 4.5.4. Inspection result 124 4.6. Conclusion 126
4.7. Bibliography 127 CHAPTER 5. ANALYSIS METHODS FOR FAULT DEFORMATION OF
SOLDER BUMP ON THE ACTUATOR ARM 131 Somporn RUANGSINCHAIWANICH 5.1.
Introduction 132 5.2. Surface tension analysis 133 5.2.1. Model analysis
135 5.2.2. Simulation 138 5.3. Analysis of stress performance at different
configurations of solder bump positions 140 5.3.1. Analysis model 144
5.3.2. Design and analysis using FEM 145 5.4. Experimental result 149 5.5.
Conclusion 151 5.6. Bibliography 152 CHAPTER 6. ARTIFICIAL INTELLIGENCE
TECHNIQUES FOR QUALITY CONTROL OF HARD DISK DRIVE COMPONENTS 155 Wimalin
LAOSIRITAWORN 6.1. Introduction 155 6.2. Artificial intelligence tasks in
quality control 157 6.2.1. Classification and prediction 157 6.2.2. Cluster
analysis 159 6.2.3. Time series analysis 160 6.3. AI applications in HDD
component quality control 161 6.3.1. Multipanel lamination process modeling
using ANN 161 6.3.2. Control chart pattern recognition with AI in actuator
production 168 6.3.3. Machine clustering using AI technique 174 6.4.
Conclusion 179 6.5. Bibliography 180 CHAPTER 7. BOREHOLE DIAMETER
INSPECTION FOR HARD DISK DRIVE PIVOT ARMS USING HOUGH TRANSFORM IN PANORAMA
IMAGES 183 Sansanee AUEPHANWIRIYAKUL, Patison PALEE, Orathai SUTTIJAK and
Nipon THEERA-UMPON 7.1. Introduction 183 7.2. Panorama image construction
185 7.3. Dimension estimation 189 7.4. Experiment result 190 7.5.
Conclusion 195 7.6. Acknowledgment 195 7.7. Bibliography 195 CHAPTER 8.
ELECTROSTATIC DISCHARGE INSPECTION TECHNOLOGIES 199 Nattha JINDAPETCH,
Kittikhun THONGPULL, Sayan PLONG-NGOOLUAM and Pornchai RAKPONGSIRI 8.1.
Introduction 199 8.2. ESD sensitivity test technologies 200 8.2.1. Human
body model testing 201 8.2.2. Charged device model testing 202 8.2.3.
Machine model testing 203 8.3. Monitoring of ESD prevention equipment 204
8.3.1. Grounding and equipotential bonding systems 205 8.3.2. Ionization
206 8.3.3. Packaging 209 8.4. ESD event localization technologies 211
8.4.1. EMI locators 212 8.4.2. High-speed oscilloscope-based ESD event
localization systems 214 8.4.3. RFID localization systems 215 8.4.4.
WSN-based localization systems 218 8.4.5. Hybrid localization systems 220
8.5. Conclusion 221 8.6. Bibliography 221 CHAPTER 9. INSPECTION OF
STYROFOAM BEADS ON ADAPTER OF HARD DISK DRIVES 225 Suchart YAMMEN 9.1.
Introduction 225 9.2. Morphological template-based method 227 9.2.1. Image
subtraction 230 9.2.2. Otsu method 231 9.2.3. Morphological operation 232
9.2.4. Logical operation 233 9.3. Decision model 233 9.4. Application 234
9.5. Conclusion 234 9.6. Bibliography 235 CHAPTER 10. INSPECTION OF DEFECT
ON MAGNETIC DISK SURFACE AND QUALITY OF THE GLUE DISPENSER ROUTE 237 Anan
KRUESUBTHAWORN 10.1. Introduction 238 10.2. Computer vision technologies
for scratch detection on media surfaces 239 10.3. Inspection of glue
dispenser route 255 10.4. Conclusion 260 10.5. Bibliography 260 CHAPTER 11.
INSPECTION OF GRANULAR MICROSTRUCTURE OF FEPT FILM IN HEAT-ASSISTED
MAGNETIC RECORDING MEDIA 265 Paisarn MUNEESAWANG 11.1. Introduction 265
11.2. Heat-assisted media recording technology 268 11.2.1. HAMR 268 11.2.2.
L10-ordered FePt as HAMR media candidate 268 11.2.3. Magnetic nanoparticle
270 11.3. Inspection procedure 272 11.3.1. Image segmentation 272 11.3.2.
Separation of overlapping particles 273 11.4. Measurement of the size
distribution 275 11.5. Measurement of dispersion 278 11.5.1. Lennard-Jones
potential index 278 11.5.2. Experimental result 281 11.6. Conclusion 285
11.7. Bibliography 286 LIST OF AUTHORS 291 INDEX 295
ON POLE TIPS 1 Suchart YAMMEN and Paisarn MUNEESAWANG 1.1. Introduction 2
1.2. Algorithm for corrosion detection 6 1.2.1. Extraction of top-shield
region 6 1.2.2. Area-based feature 9 1.2.3. Contour-based feature 13 1.3.
Experimental result 19 1.3.1. Distribution of corrosion 20 1.3.2.
Performance metric 20 1.3.3. Robustness 24 1.4. Conclusion 27 1.5.
Bibliography 28 CHAPTER 2. NONLINEAR FILTERING METHOD FOR CORROSION
DETECTION ON POLE TIPS 33 Paisarn MUNEESAWANG and Suchart YAMMEN 2.1.
Introduction 33 2.2. Perpendicular magnetic recording 35 2.3. Perpendicular
magnetic recorder and corrosion 37 2.3.1. Lubricant layer 38 2.3.2. Thermal
effect results in corrosion 41 2.3.3. Recording head/slider manufacturing
and corrosion 42 2.4. Length estimator for pole tip 44 2.5. Nonlinear
filtering as a corrosion detector 48 2.5.1. Median filter techniques 48
2.5.2. Median "¿-Filter 50 2.5.3. Corrosion detection procedure 51 2.6.
Application 54 2.7. Conclusion 62 2.8. Bibliography 63 CHAPTER 3. MICRO
DEFECT DETECTION ON AIR-BEARING SURFACE 71 Pichate KUNAKORNVONG and
Pitikhate SOORAKSA 3.1. Introduction 71 3.2. Air-bearing surface 74 3.3.
Imaging system 75 3.4. Contamination detection 79 3.4.1. Texture unit
texture spectrum 80 3.4.2. Graylevel co-occurrence matrix 82 3.4.3.
Principle component analysis 85 3.4.4. Identification defect 88 3.5.
Conclusion 92 3.6. Acknowledgment 93 3.7. Bibliography 93 CHAPTER 4.
AUTOMATED OPTICAL INSPECTION FOR SOLDER JET BALL JOINT DEFECTS IN THE HEAD
GIMBAL ASSEMBLY PROCESS 99 Jirarat IEAMSAARD and Thanapoom FUANGPIAN 4.1.
Introduction 99 4.2. Head gimbal assembly 101 4.3. Vertical edge method for
inspection of pad burning defect 102 4.3.1. Inspection procedure 103 4.3.2.
Experimental result 107 4.4. Detection of solder ball bridging on HGA 108
4.4.1. Solder ball bridging defect 108 4.4.2. Chain code descriptor-based
method 109 4.4.3. Morphological template-based method 112 4.4.4.
Experimental result 114 4.5. Detection of missing solders on HGA 121 4.5.1.
Image acquisition and enhancement 121 4.5.2. Clustering of image pixels 122
4.5.3. Decision making 123 4.5.4. Inspection result 124 4.6. Conclusion 126
4.7. Bibliography 127 CHAPTER 5. ANALYSIS METHODS FOR FAULT DEFORMATION OF
SOLDER BUMP ON THE ACTUATOR ARM 131 Somporn RUANGSINCHAIWANICH 5.1.
Introduction 132 5.2. Surface tension analysis 133 5.2.1. Model analysis
135 5.2.2. Simulation 138 5.3. Analysis of stress performance at different
configurations of solder bump positions 140 5.3.1. Analysis model 144
5.3.2. Design and analysis using FEM 145 5.4. Experimental result 149 5.5.
Conclusion 151 5.6. Bibliography 152 CHAPTER 6. ARTIFICIAL INTELLIGENCE
TECHNIQUES FOR QUALITY CONTROL OF HARD DISK DRIVE COMPONENTS 155 Wimalin
LAOSIRITAWORN 6.1. Introduction 155 6.2. Artificial intelligence tasks in
quality control 157 6.2.1. Classification and prediction 157 6.2.2. Cluster
analysis 159 6.2.3. Time series analysis 160 6.3. AI applications in HDD
component quality control 161 6.3.1. Multipanel lamination process modeling
using ANN 161 6.3.2. Control chart pattern recognition with AI in actuator
production 168 6.3.3. Machine clustering using AI technique 174 6.4.
Conclusion 179 6.5. Bibliography 180 CHAPTER 7. BOREHOLE DIAMETER
INSPECTION FOR HARD DISK DRIVE PIVOT ARMS USING HOUGH TRANSFORM IN PANORAMA
IMAGES 183 Sansanee AUEPHANWIRIYAKUL, Patison PALEE, Orathai SUTTIJAK and
Nipon THEERA-UMPON 7.1. Introduction 183 7.2. Panorama image construction
185 7.3. Dimension estimation 189 7.4. Experiment result 190 7.5.
Conclusion 195 7.6. Acknowledgment 195 7.7. Bibliography 195 CHAPTER 8.
ELECTROSTATIC DISCHARGE INSPECTION TECHNOLOGIES 199 Nattha JINDAPETCH,
Kittikhun THONGPULL, Sayan PLONG-NGOOLUAM and Pornchai RAKPONGSIRI 8.1.
Introduction 199 8.2. ESD sensitivity test technologies 200 8.2.1. Human
body model testing 201 8.2.2. Charged device model testing 202 8.2.3.
Machine model testing 203 8.3. Monitoring of ESD prevention equipment 204
8.3.1. Grounding and equipotential bonding systems 205 8.3.2. Ionization
206 8.3.3. Packaging 209 8.4. ESD event localization technologies 211
8.4.1. EMI locators 212 8.4.2. High-speed oscilloscope-based ESD event
localization systems 214 8.4.3. RFID localization systems 215 8.4.4.
WSN-based localization systems 218 8.4.5. Hybrid localization systems 220
8.5. Conclusion 221 8.6. Bibliography 221 CHAPTER 9. INSPECTION OF
STYROFOAM BEADS ON ADAPTER OF HARD DISK DRIVES 225 Suchart YAMMEN 9.1.
Introduction 225 9.2. Morphological template-based method 227 9.2.1. Image
subtraction 230 9.2.2. Otsu method 231 9.2.3. Morphological operation 232
9.2.4. Logical operation 233 9.3. Decision model 233 9.4. Application 234
9.5. Conclusion 234 9.6. Bibliography 235 CHAPTER 10. INSPECTION OF DEFECT
ON MAGNETIC DISK SURFACE AND QUALITY OF THE GLUE DISPENSER ROUTE 237 Anan
KRUESUBTHAWORN 10.1. Introduction 238 10.2. Computer vision technologies
for scratch detection on media surfaces 239 10.3. Inspection of glue
dispenser route 255 10.4. Conclusion 260 10.5. Bibliography 260 CHAPTER 11.
INSPECTION OF GRANULAR MICROSTRUCTURE OF FEPT FILM IN HEAT-ASSISTED
MAGNETIC RECORDING MEDIA 265 Paisarn MUNEESAWANG 11.1. Introduction 265
11.2. Heat-assisted media recording technology 268 11.2.1. HAMR 268 11.2.2.
L10-ordered FePt as HAMR media candidate 268 11.2.3. Magnetic nanoparticle
270 11.3. Inspection procedure 272 11.3.1. Image segmentation 272 11.3.2.
Separation of overlapping particles 273 11.4. Measurement of the size
distribution 275 11.5. Measurement of dispersion 278 11.5.1. Lennard-Jones
potential index 278 11.5.2. Experimental result 281 11.6. Conclusion 285
11.7. Bibliography 286 LIST OF AUTHORS 291 INDEX 295
PREFACE xi CHAPTER 1. FEATURE FUSION METHOD FOR RAPID CORROSION DETECTION
ON POLE TIPS 1 Suchart YAMMEN and Paisarn MUNEESAWANG 1.1. Introduction 2
1.2. Algorithm for corrosion detection 6 1.2.1. Extraction of top-shield
region 6 1.2.2. Area-based feature 9 1.2.3. Contour-based feature 13 1.3.
Experimental result 19 1.3.1. Distribution of corrosion 20 1.3.2.
Performance metric 20 1.3.3. Robustness 24 1.4. Conclusion 27 1.5.
Bibliography 28 CHAPTER 2. NONLINEAR FILTERING METHOD FOR CORROSION
DETECTION ON POLE TIPS 33 Paisarn MUNEESAWANG and Suchart YAMMEN 2.1.
Introduction 33 2.2. Perpendicular magnetic recording 35 2.3. Perpendicular
magnetic recorder and corrosion 37 2.3.1. Lubricant layer 38 2.3.2. Thermal
effect results in corrosion 41 2.3.3. Recording head/slider manufacturing
and corrosion 42 2.4. Length estimator for pole tip 44 2.5. Nonlinear
filtering as a corrosion detector 48 2.5.1. Median filter techniques 48
2.5.2. Median "¿-Filter 50 2.5.3. Corrosion detection procedure 51 2.6.
Application 54 2.7. Conclusion 62 2.8. Bibliography 63 CHAPTER 3. MICRO
DEFECT DETECTION ON AIR-BEARING SURFACE 71 Pichate KUNAKORNVONG and
Pitikhate SOORAKSA 3.1. Introduction 71 3.2. Air-bearing surface 74 3.3.
Imaging system 75 3.4. Contamination detection 79 3.4.1. Texture unit
texture spectrum 80 3.4.2. Graylevel co-occurrence matrix 82 3.4.3.
Principle component analysis 85 3.4.4. Identification defect 88 3.5.
Conclusion 92 3.6. Acknowledgment 93 3.7. Bibliography 93 CHAPTER 4.
AUTOMATED OPTICAL INSPECTION FOR SOLDER JET BALL JOINT DEFECTS IN THE HEAD
GIMBAL ASSEMBLY PROCESS 99 Jirarat IEAMSAARD and Thanapoom FUANGPIAN 4.1.
Introduction 99 4.2. Head gimbal assembly 101 4.3. Vertical edge method for
inspection of pad burning defect 102 4.3.1. Inspection procedure 103 4.3.2.
Experimental result 107 4.4. Detection of solder ball bridging on HGA 108
4.4.1. Solder ball bridging defect 108 4.4.2. Chain code descriptor-based
method 109 4.4.3. Morphological template-based method 112 4.4.4.
Experimental result 114 4.5. Detection of missing solders on HGA 121 4.5.1.
Image acquisition and enhancement 121 4.5.2. Clustering of image pixels 122
4.5.3. Decision making 123 4.5.4. Inspection result 124 4.6. Conclusion 126
4.7. Bibliography 127 CHAPTER 5. ANALYSIS METHODS FOR FAULT DEFORMATION OF
SOLDER BUMP ON THE ACTUATOR ARM 131 Somporn RUANGSINCHAIWANICH 5.1.
Introduction 132 5.2. Surface tension analysis 133 5.2.1. Model analysis
135 5.2.2. Simulation 138 5.3. Analysis of stress performance at different
configurations of solder bump positions 140 5.3.1. Analysis model 144
5.3.2. Design and analysis using FEM 145 5.4. Experimental result 149 5.5.
Conclusion 151 5.6. Bibliography 152 CHAPTER 6. ARTIFICIAL INTELLIGENCE
TECHNIQUES FOR QUALITY CONTROL OF HARD DISK DRIVE COMPONENTS 155 Wimalin
LAOSIRITAWORN 6.1. Introduction 155 6.2. Artificial intelligence tasks in
quality control 157 6.2.1. Classification and prediction 157 6.2.2. Cluster
analysis 159 6.2.3. Time series analysis 160 6.3. AI applications in HDD
component quality control 161 6.3.1. Multipanel lamination process modeling
using ANN 161 6.3.2. Control chart pattern recognition with AI in actuator
production 168 6.3.3. Machine clustering using AI technique 174 6.4.
Conclusion 179 6.5. Bibliography 180 CHAPTER 7. BOREHOLE DIAMETER
INSPECTION FOR HARD DISK DRIVE PIVOT ARMS USING HOUGH TRANSFORM IN PANORAMA
IMAGES 183 Sansanee AUEPHANWIRIYAKUL, Patison PALEE, Orathai SUTTIJAK and
Nipon THEERA-UMPON 7.1. Introduction 183 7.2. Panorama image construction
185 7.3. Dimension estimation 189 7.4. Experiment result 190 7.5.
Conclusion 195 7.6. Acknowledgment 195 7.7. Bibliography 195 CHAPTER 8.
ELECTROSTATIC DISCHARGE INSPECTION TECHNOLOGIES 199 Nattha JINDAPETCH,
Kittikhun THONGPULL, Sayan PLONG-NGOOLUAM and Pornchai RAKPONGSIRI 8.1.
Introduction 199 8.2. ESD sensitivity test technologies 200 8.2.1. Human
body model testing 201 8.2.2. Charged device model testing 202 8.2.3.
Machine model testing 203 8.3. Monitoring of ESD prevention equipment 204
8.3.1. Grounding and equipotential bonding systems 205 8.3.2. Ionization
206 8.3.3. Packaging 209 8.4. ESD event localization technologies 211
8.4.1. EMI locators 212 8.4.2. High-speed oscilloscope-based ESD event
localization systems 214 8.4.3. RFID localization systems 215 8.4.4.
WSN-based localization systems 218 8.4.5. Hybrid localization systems 220
8.5. Conclusion 221 8.6. Bibliography 221 CHAPTER 9. INSPECTION OF
STYROFOAM BEADS ON ADAPTER OF HARD DISK DRIVES 225 Suchart YAMMEN 9.1.
Introduction 225 9.2. Morphological template-based method 227 9.2.1. Image
subtraction 230 9.2.2. Otsu method 231 9.2.3. Morphological operation 232
9.2.4. Logical operation 233 9.3. Decision model 233 9.4. Application 234
9.5. Conclusion 234 9.6. Bibliography 235 CHAPTER 10. INSPECTION OF DEFECT
ON MAGNETIC DISK SURFACE AND QUALITY OF THE GLUE DISPENSER ROUTE 237 Anan
KRUESUBTHAWORN 10.1. Introduction 238 10.2. Computer vision technologies
for scratch detection on media surfaces 239 10.3. Inspection of glue
dispenser route 255 10.4. Conclusion 260 10.5. Bibliography 260 CHAPTER 11.
INSPECTION OF GRANULAR MICROSTRUCTURE OF FEPT FILM IN HEAT-ASSISTED
MAGNETIC RECORDING MEDIA 265 Paisarn MUNEESAWANG 11.1. Introduction 265
11.2. Heat-assisted media recording technology 268 11.2.1. HAMR 268 11.2.2.
L10-ordered FePt as HAMR media candidate 268 11.2.3. Magnetic nanoparticle
270 11.3. Inspection procedure 272 11.3.1. Image segmentation 272 11.3.2.
Separation of overlapping particles 273 11.4. Measurement of the size
distribution 275 11.5. Measurement of dispersion 278 11.5.1. Lennard-Jones
potential index 278 11.5.2. Experimental result 281 11.6. Conclusion 285
11.7. Bibliography 286 LIST OF AUTHORS 291 INDEX 295
ON POLE TIPS 1 Suchart YAMMEN and Paisarn MUNEESAWANG 1.1. Introduction 2
1.2. Algorithm for corrosion detection 6 1.2.1. Extraction of top-shield
region 6 1.2.2. Area-based feature 9 1.2.3. Contour-based feature 13 1.3.
Experimental result 19 1.3.1. Distribution of corrosion 20 1.3.2.
Performance metric 20 1.3.3. Robustness 24 1.4. Conclusion 27 1.5.
Bibliography 28 CHAPTER 2. NONLINEAR FILTERING METHOD FOR CORROSION
DETECTION ON POLE TIPS 33 Paisarn MUNEESAWANG and Suchart YAMMEN 2.1.
Introduction 33 2.2. Perpendicular magnetic recording 35 2.3. Perpendicular
magnetic recorder and corrosion 37 2.3.1. Lubricant layer 38 2.3.2. Thermal
effect results in corrosion 41 2.3.3. Recording head/slider manufacturing
and corrosion 42 2.4. Length estimator for pole tip 44 2.5. Nonlinear
filtering as a corrosion detector 48 2.5.1. Median filter techniques 48
2.5.2. Median "¿-Filter 50 2.5.3. Corrosion detection procedure 51 2.6.
Application 54 2.7. Conclusion 62 2.8. Bibliography 63 CHAPTER 3. MICRO
DEFECT DETECTION ON AIR-BEARING SURFACE 71 Pichate KUNAKORNVONG and
Pitikhate SOORAKSA 3.1. Introduction 71 3.2. Air-bearing surface 74 3.3.
Imaging system 75 3.4. Contamination detection 79 3.4.1. Texture unit
texture spectrum 80 3.4.2. Graylevel co-occurrence matrix 82 3.4.3.
Principle component analysis 85 3.4.4. Identification defect 88 3.5.
Conclusion 92 3.6. Acknowledgment 93 3.7. Bibliography 93 CHAPTER 4.
AUTOMATED OPTICAL INSPECTION FOR SOLDER JET BALL JOINT DEFECTS IN THE HEAD
GIMBAL ASSEMBLY PROCESS 99 Jirarat IEAMSAARD and Thanapoom FUANGPIAN 4.1.
Introduction 99 4.2. Head gimbal assembly 101 4.3. Vertical edge method for
inspection of pad burning defect 102 4.3.1. Inspection procedure 103 4.3.2.
Experimental result 107 4.4. Detection of solder ball bridging on HGA 108
4.4.1. Solder ball bridging defect 108 4.4.2. Chain code descriptor-based
method 109 4.4.3. Morphological template-based method 112 4.4.4.
Experimental result 114 4.5. Detection of missing solders on HGA 121 4.5.1.
Image acquisition and enhancement 121 4.5.2. Clustering of image pixels 122
4.5.3. Decision making 123 4.5.4. Inspection result 124 4.6. Conclusion 126
4.7. Bibliography 127 CHAPTER 5. ANALYSIS METHODS FOR FAULT DEFORMATION OF
SOLDER BUMP ON THE ACTUATOR ARM 131 Somporn RUANGSINCHAIWANICH 5.1.
Introduction 132 5.2. Surface tension analysis 133 5.2.1. Model analysis
135 5.2.2. Simulation 138 5.3. Analysis of stress performance at different
configurations of solder bump positions 140 5.3.1. Analysis model 144
5.3.2. Design and analysis using FEM 145 5.4. Experimental result 149 5.5.
Conclusion 151 5.6. Bibliography 152 CHAPTER 6. ARTIFICIAL INTELLIGENCE
TECHNIQUES FOR QUALITY CONTROL OF HARD DISK DRIVE COMPONENTS 155 Wimalin
LAOSIRITAWORN 6.1. Introduction 155 6.2. Artificial intelligence tasks in
quality control 157 6.2.1. Classification and prediction 157 6.2.2. Cluster
analysis 159 6.2.3. Time series analysis 160 6.3. AI applications in HDD
component quality control 161 6.3.1. Multipanel lamination process modeling
using ANN 161 6.3.2. Control chart pattern recognition with AI in actuator
production 168 6.3.3. Machine clustering using AI technique 174 6.4.
Conclusion 179 6.5. Bibliography 180 CHAPTER 7. BOREHOLE DIAMETER
INSPECTION FOR HARD DISK DRIVE PIVOT ARMS USING HOUGH TRANSFORM IN PANORAMA
IMAGES 183 Sansanee AUEPHANWIRIYAKUL, Patison PALEE, Orathai SUTTIJAK and
Nipon THEERA-UMPON 7.1. Introduction 183 7.2. Panorama image construction
185 7.3. Dimension estimation 189 7.4. Experiment result 190 7.5.
Conclusion 195 7.6. Acknowledgment 195 7.7. Bibliography 195 CHAPTER 8.
ELECTROSTATIC DISCHARGE INSPECTION TECHNOLOGIES 199 Nattha JINDAPETCH,
Kittikhun THONGPULL, Sayan PLONG-NGOOLUAM and Pornchai RAKPONGSIRI 8.1.
Introduction 199 8.2. ESD sensitivity test technologies 200 8.2.1. Human
body model testing 201 8.2.2. Charged device model testing 202 8.2.3.
Machine model testing 203 8.3. Monitoring of ESD prevention equipment 204
8.3.1. Grounding and equipotential bonding systems 205 8.3.2. Ionization
206 8.3.3. Packaging 209 8.4. ESD event localization technologies 211
8.4.1. EMI locators 212 8.4.2. High-speed oscilloscope-based ESD event
localization systems 214 8.4.3. RFID localization systems 215 8.4.4.
WSN-based localization systems 218 8.4.5. Hybrid localization systems 220
8.5. Conclusion 221 8.6. Bibliography 221 CHAPTER 9. INSPECTION OF
STYROFOAM BEADS ON ADAPTER OF HARD DISK DRIVES 225 Suchart YAMMEN 9.1.
Introduction 225 9.2. Morphological template-based method 227 9.2.1. Image
subtraction 230 9.2.2. Otsu method 231 9.2.3. Morphological operation 232
9.2.4. Logical operation 233 9.3. Decision model 233 9.4. Application 234
9.5. Conclusion 234 9.6. Bibliography 235 CHAPTER 10. INSPECTION OF DEFECT
ON MAGNETIC DISK SURFACE AND QUALITY OF THE GLUE DISPENSER ROUTE 237 Anan
KRUESUBTHAWORN 10.1. Introduction 238 10.2. Computer vision technologies
for scratch detection on media surfaces 239 10.3. Inspection of glue
dispenser route 255 10.4. Conclusion 260 10.5. Bibliography 260 CHAPTER 11.
INSPECTION OF GRANULAR MICROSTRUCTURE OF FEPT FILM IN HEAT-ASSISTED
MAGNETIC RECORDING MEDIA 265 Paisarn MUNEESAWANG 11.1. Introduction 265
11.2. Heat-assisted media recording technology 268 11.2.1. HAMR 268 11.2.2.
L10-ordered FePt as HAMR media candidate 268 11.2.3. Magnetic nanoparticle
270 11.3. Inspection procedure 272 11.3.1. Image segmentation 272 11.3.2.
Separation of overlapping particles 273 11.4. Measurement of the size
distribution 275 11.5. Measurement of dispersion 278 11.5.1. Lennard-Jones
potential index 278 11.5.2. Experimental result 281 11.6. Conclusion 285
11.7. Bibliography 286 LIST OF AUTHORS 291 INDEX 295