|
วิธีตรวจหาการกัดกร่อนบนโพลทิพ |
|---|---|
| รหัสดีโอไอ | |
| Creator | 1. สมเจตน์ บุญชื่น 2. อัษฎางค์ บุญศรี 3. ไพศาล มุณีสว่าง 4. สุชาติ แย้มเม่น |
| Title | วิธีตรวจหาการกัดกร่อนบนโพลทิพ |
| Publisher | คณะวิศวกรรมศาสตร์ มหาวิทยาลัยนเรศวร |
| Publication Year | 2554 |
| Journal Title | วิศวกรรมสาร มหาวิทยาลัยนเรศวร |
| Journal Vol. | 6 |
| Journal No. | 2 |
| Page no. | 1-8 |
| Keyword | corrosion detection,the top shield,the pole tip |
| ISSN | 1905-615x |
| Abstract | In hard disk drive manufacturing;one of important steps is corrosion detection on the pole tip that serves as both reading and writing heads of the hard disk drives. Thus;it must be worked with high accuracy. In general;the corrosion detection is performed by the human eyes;which can often fail to do because of the fatigue. This research presents automatic corrosion inspection methods. The inspected corrosion is within the top shield and along the bottom edge of the top shield by using three classification features: the first one is used for classifying corrosion area within the top shield;the second one is used for classifying corrosion position along the bottom edge of the top shield;and the last one which is a combination of the 1st and 2nd features is used for classifying the corrosion of the top shield. From experiment results with 647 pole tip images;it was found that the integrated feature with an accuracy of 96.75 provided higher efficiency of corrosion detection than both 1st and 2nd features with accuracies of 69.86 and 93.51;respectively |
