Study on Transient Heat Transfer of Micro-Injection Molded Structures Based on the Finite Element Method

Article Preview

Abstract:

Injection molded part with micro structures is extensively used as a heatsink, which will provide bright prospects for application. In this present study, analytical models with micro pins, micro holes and micro grooves were specially designed and built. Molding quality and transient heat transfer performance of these parts were investigated via the finite element methods. As research objective, warpage and residual thermal stress of each target under identical molding conditions was compared to evaluate the product quality, and heat dissipation performance of micro structures was applied to assess the applicability of plastic products used as heatsinks. Study results revealed that the part with micro grooves had better molding quality and heat dissipation effectiveness than others.

You might also be interested in these eBooks

Info:

Periodical:

Pages:

141-145

Citation:

Online since:

July 2013

Export:

Price:

Permissions CCC:

Permissions PLS:

Сopyright:

© 2013 Trans Tech Publications Ltd. All Rights Reserved

Share:

Citation:

[1] X.J. Hu, A. Jain, K.E. Goodson, Investigation of the natural convection boundary condition in microfabricated structures, Int. J. Therm. Sci. 47 (2008) 820-824.

DOI: 10.1016/j.ijthermalsci.2007.07.011

Google Scholar

[2] S. Mahmoud, R. Al-Dadah, D.K. Aspinwall, S.L. Soo, H. Hemida, Effect of micro fin geometry on natural convection heat transfer of horizontal microstructures, Appl. Therm. Eng. 31 (2011) 627-633.

DOI: 10.1016/j.applthermaleng.2010.09.017

Google Scholar

[3] G. Hetsroni, A. Mosyak, E. Pogrebnyak, L.P. Yarin, Heat transfer in micro-channels: Comparison of experiments with theory and numerical results, Int. J. Heat. Mass. Tran. 48 (2005) 5580-5601.

DOI: 10.1016/j.ijheatmasstransfer.2005.05.041

Google Scholar

[4] Wang Xiaowu, Tang Yong, Chen Ping, Investigation into performance of a heat pipe with micro grooves fabricated by extrusion-ploughing process, Energ. Convers. Manage. 50 (2009) 1384-1388.

DOI: 10.1016/j.enconman.2009.01.009

Google Scholar

[5] A.Y. Fasasi, S. Mwenifumbo, N. Rahbar, J. Chen, M. Li, A.C. Beye, C.B. Arnold, W.O. Soboyejo, Nano-second UV laser processed micro-grooves on Ti6Al4V for biomedical applications, Mater. Sci. Eng. 29 (2009) 5-13.

DOI: 10.1016/j.msec.2008.05.002

Google Scholar

[6] V. Dharma Rao, S.V. Naidu, B. Govinda Rao, K.V. Sharma, Heat transfer from a horizontal fin array by natural convection and radiation-A conjugate analysis, Int. J. Heat. Mass. Tran. 49 (2006) 3379-3391.

DOI: 10.1016/j.ijheatmasstransfer.2006.03.010

Google Scholar