Browse > Article
http://dx.doi.org/10.5050/KSNVN.2009.19.12.1289

Design and Analysis of Ultrasonic Vibrator for Conformal Coating in LED Packaging  

Son, Byeoun-Ho (인하대학교 대학원 기계공학과)
Choi, Seung-Bok (인하대학교 기계공학부)
Publication Information
Transactions of the Korean Society for Noise and Vibration Engineering / v.19, no.12, 2009 , pp. 1289-1295 More about this Journal
Abstract
This paper presents design and analysis of ultrasonic vibrator featuring the piezoelectric actuator. After describing a geometric configuration of the proposed vibrator, an analytical model of the ultrasonic vibrator is formulated by adopting liquid film pattern theory and wave theory. The dynamic analysis and geometric optimization are then undertaken using a software ANSYS. The optimization is performed by taking the amplitude of the tip displacement as an objective function. The fluid flow characteristics of the proposed vibrator are analyzed by taking three different fluids: water, silicon oil and ethylene-glycol. This is achieved using a software FLUENT.
Keywords
Ultrasonic Vibrator; Piezoelectric Actuator; Conformal Coating; LED;
Citations & Related Records
연도 인용수 순위
  • Reference
1 Amin, S. G., Ahmed, M. H. M. and Youssef, H. A., 1995, 'Computer-aided Design of Acoustic Horns for Ultrasonic Machining Using Finite-element Analysis,' J. mater. Process. Technol. pp. 254-260
2 Dobre, M. and Bolle, L., 1999, 'Theoretical Prediction of Ultrasonic Spray Characteristics Using the Maximum Entropy Formalism,' ILASS-Europe'98
3 Dobre, M. and Bolle, L., 2002, 'Practical Design of Ultrasonic Spray Devices : Experimental Testing of Several Vibrator Geometries,' Experimental Thermal and Fluid Science, pp. 205-211
4 Sherrit, S., Dongin, B. P., Bar-Cohen, Y., Pal, D., Kroh, J. and Peterson, T., 1999, 'Modeling of Horns for Sonic/ultrasonic Applications,' Proceedings of IEEE Ultrasonic Symposium, pp. 647-651   DOI
5 Lang, R. J., 1962, 'Ultrasonic Atomization of Liquids,' J. Acoust. Soc. Am. 34, pp. 6-8   DOI
6 Wang, F. J., Zhao, X. Y., Zhang, D. W. and Wu, Y. I., 2009, 'Development of Novel Ultrasonic Transducers for Microelectronics Packaging,' Journal of Materials Processing Technology, pp. 1291-1301   DOI   ScienceOn
7 Lee, H. S. and Cho, C. D., 2003, 'Finite Element Analysis of a Piezoelectric Actuator,' Proceedings of the KSME Annual Autumn Conference 2003, pp. 1401-1405
8 Kim, I. K., Hong, S. H. and Lee, S. I., 2008, 'Vibration Analysis of Ultrasonic Horn for Flip-chip Bonding,' Proceedings of the KSNVE Annual Autumn Conference, pp. 364-367
9 Dobre, M. and Bolle, L. 1999, 'Visualisation and Analysis of Liquid Film Surface Patterns Formed on Ultrasonic Atomisers,' TILASS-Europe'99