A theoretical model for acoustic emission sensing process in contact/near-contact interfaces of magnetic recording system

1999 ◽  
Vol 85 (8) ◽  
pp. 5609-5611 ◽  
Author(s):  
Gang Sheng ◽  
Bo Liu ◽  
Wei Hua ◽  
Qisuo Chen
Keyword(s):  
Acoustic Emission ◽  
Theoretical Model ◽  
Magnetic Recording ◽  
Recording System ◽  
Acoustic Emission Sensing

Effect of Molecular Weight on Lubricant Depletion in a Heat Assisted Magnetic Recording System

2017 ◽  
Author(s):  
Deng Pan ◽  
Wenping Song
Keyword(s):  
Molecular Dynamics ◽  
Molecular Weight ◽  
Molecular Dynamics Simulation ◽  
Magnetic Recording ◽  
Recording System ◽  
Dynamics Simulation ◽  
Disk System ◽  
Heat Assisted Magnetic Recording ◽  
Lubricant Depletion

A model for studying lubricant depletion in HAMR slider/disk system was developed based on molecular dynamics simulation. We found that the lubricant molecular weight has small effect on lubricant depletion.

Head Instability Detection for Testing Process in Perpendicular Magnetic Recording System

2013 ◽  
Vol 770 ◽  
pp. 319-322 ◽  
Author(s):  
Piya Kovintavewat ◽  
Santi Koonkarnkhai ◽  
Aimamorn Suvichakorn
Keyword(s):  
Magnetic Recording ◽  
Signal To Noise Ratio ◽  
Disk Drive ◽  
Detection Algorithm ◽  
Recording System ◽  
High Signal ◽  
Signal To Noise ◽  
Perpendicular Magnetic Recording ◽  
Read Head ◽  
Pass Through

During hard disk drive (HDD) testing process, the magneto-resistive read (MR) head is analyzed and checked if the head is defective or not. Baseline popping (BLP) is one of the crucial problems caused by head instability, whose effect can distort the readback signal to the extent of causing possible sector read failure. Without BLP detection algorithm, the defective read head might pass through HDD assembling process, thus producing an unreliable HDD. This situation must be prevented so as to retain customer satisfaction. This paper proposes a simple (but efficient) BLP detection algorithm for perpendicular magnetic recording systems. Results show that the proposed algorithm outperforms the conventional one in terms of both the percentage of detection and the percentage of false alarm, when operating at high signal-to-noise ratio.

Perspectives of Magnetic Recording System at 10 Tb/in$^{2}$

2009 ◽  
Vol 45 (11) ◽  
pp. 5038-5043 ◽  
Author(s):  
Zhi-Min Yuan ◽  
Bo Liu ◽  
Tiejun Zhou ◽  
Chi Keong Goh ◽  
Chun Lian Ong ◽  
...  
Keyword(s):  
Magnetic Recording ◽  
Recording System

Numerical Investigation of Thermal Problems in Heat-Assisted Magnetic Recording System

2009 ◽  
Vol 45 (11) ◽  
pp. 4962-4965 ◽  
Author(s):  
Q. D. Zhang ◽  
B. X. Xu ◽  
J. Zhang ◽  
N. Y. Liu ◽  
G. L. Chin ◽  
...  
Keyword(s):  
Numerical Investigation ◽  
Magnetic Recording ◽  
Recording System ◽  
Heat Assisted Magnetic Recording

Chapter 11: Tribology in Magnetic Recording System

2009 ◽  
pp. 210-210-27
Author(s):  
Shizhu Wen ◽  
Jianbin Luo ◽  
Yuanzhong Hu ◽  
Jianbin Luo ◽  
Weiming Lee ◽  
...  
Keyword(s):  
Magnetic Recording ◽  
Recording System

Fiber-Optic Interferometric Sensor Based on the Self-Interference Pulse Interrogation Approach for Acoustic Emission Sensing in the Graphite/Epoxy Composite

2019 ◽  
Vol 19 (18) ◽  
pp. 7861-7867 ◽  
Author(s):  
Mikhail E. Efimov ◽  
Mikhail Y. Plotnikov ◽  
Andrey V. Kulikov ◽  
Mikhail V. Mekhrengin ◽  
Aleksandr Y. Kireenkov
Keyword(s):  
Acoustic Emission ◽  
Fiber Optic ◽  
Epoxy Composite ◽  
The Self ◽  
Acoustic Emission Sensing ◽  
Interferometric Sensor
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