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Publication
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| Title of Article |
Automatic Scratch Detector for Magnetic Disk |
| Date of Acceptance |
20 March 2021 |
| Journal |
| Title of Journal |
Mahasarakham International Journal of Engineering Technology |
| Standard |
TCI |
| Institute of Journal |
Faculty of Engineering, Mahasarakham University, Thailand |
| ISBN/ISSN |
2408-1566 |
| Volume |
7 |
| Issue |
2 |
| Month |
July-December |
| Year of Publication |
2021 |
| Page |
89-92 |
| Abstract |
The development of an automatic scratch
detector for a magnetic disk aims to detect scratches on
magnetic disk surface at the micrometer level. In hard disk
manufacturing industry, it is vital to focus on hard disk
quality checking. [Every piece is scrutinized, especially a
magnetic disk inspected for scratches. They are occurred
during industrial manufacturing processes and by
read/write head devices. It may affect data storage
performance of magnetic disk.] In this study, scratch
detector is operated by reflective method, using the
principle of laser reflection (Laser). The beam is sent to
disk surface and reflected to photo diode, which is a light
receiver. It is found that when the intensity of laser beam
received by photo diode reflect on scratched and nonscratched area differently. Light intensity is decreased
when it reflects on scratched area. The signal amplitude is
between 2.1 - 4.3 volts. It is indicated that the magnetic
disk surface is scratched. Finally, it revealed that width of
scratch magnetic disk measured by Stereo Microscope
(SM) was 30 micrometers in a micrometer scale |
| Keyword |
light reflection, scratch detection, magnetic disk |
| Author |
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| Reviewing Status |
มีผู้ประเมินอิสระ |
| Status |
ตีพิมพ์แล้ว |
| Level of Publication |
นานาชาติ |
| citation |
true |
| Part of thesis |
true |
| Attach file |
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| Citation |
0
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Journal Publication
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