Calibration methods for contact force measurements at the head disk interface using acoustic emission analysis

2005 ◽  
Author(s):  
B. Knigge ◽  
F.E. Talke
Keyword(s):  
Acoustic Emission ◽  
Contact Force ◽  
Head Disk Interface ◽  
Force Measurements ◽  
Emission Analysis ◽  
Disk Interface ◽  
Calibration Methods ◽  
Acoustic Emission Analysis

Experimental Study of High-Speed Contact at Head-Disk Interface in a Magnetic Hard Disk

2005 ◽  
Author(s):  
Mingwu Bai ◽  
Stephen M. Hsu
Keyword(s):  
Acoustic Emission ◽  
High Speed ◽  
Hard Disk ◽  
Disk Drive ◽  
Test Method ◽  
Head Disk Interface ◽  
Emission Analysis ◽  
Disk Interface ◽  
Emission Signal ◽  
Carbon Overcoats

Tribological performance of the head-disk interface will have significant impact on the performance and durability of the hard disk drive. A high-speed contact test method has been developed for the purpose of evaluating nanometer-thick lubricant film/carbon overcoats materials on hard-disk surfaces. Four different thickness overcoats were used in high speed contact experiments. High speed contact force was calculated based on the calibration of acoustic emission signal by proposed ball dropping tests. Acoustic emission analysis, frequency spectrum analysis, and surface morphology imaging were used to analyze the deformation and fracture at high speed contacted area. The availability of an experimental technique enables effective screening of different material chemistries and lubricant combinations to improve the level of protection for hard disk technology.

In-Situ Observation and Acoustic Emission Analysis for Corrosion Pitting of MgCl2 Droplet in SUS304 Stainless Steel

2012 ◽  
Vol 53 (6) ◽  
pp. 1069-1074 ◽  
Author(s):  
Mitsuharu Shiwa ◽  
Hiroyuki Masuda ◽  
Hisashi Yamawaki ◽  
Kaita Ito ◽  
Manabu Enoki
Keyword(s):  
Stainless Steel ◽  
Acoustic Emission ◽  
Emission Analysis ◽  
Sus304 Stainless Steel ◽  
Corrosion Pitting ◽  
Acoustic Emission Analysis

Characterization of acoustic emission analysis in applications for inhalation device performance assessment

2019 ◽  
Vol 563 ◽  
pp. 304-313
Author(s):  
Mikael Boberg ◽  
Lisa Holmstén ◽  
Mats Josefson ◽  
Roland Greguletz ◽  
Kyrre Thalberg ◽  
...  
Keyword(s):  
Acoustic Emission ◽  
Performance Assessment ◽  
Device Performance ◽  
Emission Analysis ◽  
Inhalation Device ◽  
Acoustic Emission Analysis
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