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Natural Frequency Analysis of Femto Slider with Head/Disk Interaction Using Acoustic Emission
Galina Pan,Pyung Hwang,Wu Xuan 한국트라이볼로지학회 2005 한국트라이볼로지학회 학술대회 Vol.2005 No.6
The object of the present work is the natural frequency analysis of femto slider. Head/disk interaction during start/stop and constant speed were detected by using acoustic emission (AE) test system. The frequency spectrum analysis is performed using the AE signal obtained during the head/disk interaction. Natural frequency analysis was performed using Ansys program.
The Acoustic Emission Energy Analysis of Subambient Pressure Tri-Pad Slider
Galina Pan,Pyung Hwang,Wu Xuan 한국트라이볼로지학회 2004 한국트라이볼로지학회 학술대회 Vol.39 No.-
The object of the present work is the acoustic emission energy analysis of subambient pressure tri-pad slider. Head/disk interaction during start/stop and constant speed were detected by using acoustic emission (AE) test system. The frequency spectrum analysis is performed using the AE signal obtained during the head/disk interaction. Natural frequency analysis was performed using Ansys program. Acoustic emission energy was calculated for the slider modes.
Galina Pan,Pyung Hwang,Sung-Ryul Choi 한국트라이볼로지학회 2003 한국트라이볼로지학회 학술대회 Vol.37 No.-
The object of the present work is the analysis of head/disk interaction during start/stop and constant speed operation using acoustic emission (AE). The frequency spectrum analysis is performed using the AE signal obtained during the head/disk interaction. The FFT (Fast Fourier Transform) analysis of the AE signals is used to understand the interaction between the AE signal and the state of contact.
Galina Pan,Pyung Hwang 한국트라이볼로지학회 2004 한국트라이볼로지학회 학술대회 Vol.38 No.-
The object of the present work is the natural frequencies analysis of subambient pressure tripad and pico sliders. Head/disk interaction during start/stop and constant speed were detected by using acoustic emission (AE) test system. The frequency spectrum analysis is performed using the AE signal obtained during the head/disk interaction. Natural frequencies analysis was performed using Ansys program.
Natural Frequency Analysis of Sliders and Head/Disk Interaction Detection by Acoustic Emission
Hwang, Pyung,Pan, Galina,Khan, Polina Korean Tribology Society 2004 KSTLE International Journal Vol.5 No.1
The object of the present work is the natural frequency analysis of subambient pressure tri-pad and pico sliders. Head/disk interaction during start/stop and constant speed were detected by using the acoustic emission (AE) test system. The frequency spectrum analysis is performed using the AE signal obtained during the head/disk interaction. The FFT (Fast Fourier Transform) analysis of the AE signals is used to understand the interaction between the AE signal and the state of contact. Natural frequency analysis was performed using the Ansys program. The results indicate acceptable accordance of finite element calculation results with the experimental results.
Femto Slider Head/Disk Interaction Detection by Acoustic Emission and Natural Frequency Analysis
Pyung Hwang,Galina Pan,Xuan Wu 한국트라이볼로지학회 2005 KSTLE International Journal Vol.6 No.1
The object of the present work is the natural frequency analysis of femto slider. Head/disk interaction during start! stop and constant speed were detected by using the acoustic emission (AE) test system. The frequency spect겨m analysis was performed using the AE signal obtained during the head/disk interaction. The FFT (Fast Fourier Transform) analysis of the AE signals is used to understand the interaction between the AE signal and the state of contact. Natural frequency analysis was performed using the ANSYS program. The results indicate acceptable accordance of finite element calculation results with the experimental results.
On Application of Optimization Scheme To Direct Numerical Analysis Of Slider
Hwang, Pyung,Khan, Polina,Pan, Galina Korean Tribology Society 2004 KSTLE International Journal Vol.5 No.1
The object of the present work is the numerical analysis of the computer hard disk slider. The pressure between slider and disk surfaces is calculated using the Boundary Fitted Coordinate System and Divergence Formulation for the nonlinear Reynolds' equation solution. The optimization scheme is applied to search for the steady state position of the slider. The simplified method is given for the case of the fixed inclined pad. The film thickness ratios and pitching and rolling angles are considered as alternative choice of the slider's coordinates. The behavior of the objective function for the Negative Pressure slider is studied in details. Methods of conjugate directions and feasible directions are applied.