A studyon the convection coefficient of an electro-thermal bimorph actuator

Junwen Liu, Dacheng Xu*, Qiao Chen, Jinling Ding, Huikai Xie

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

A method of estimating the convection coefficient at microscale is presented in this paper, based on the modeling and experimental data of a microfabricated electrothermal bimorph actuator. In this method, an analytical heat transfer model of the electro-thermal bimorph actuator is established first. Then the model is used to analyze the temperature distribution and extract the convection coefficient from measurement data. The convection coefficient obtained by this method matches the experimental result within 8.1%, which validates the rationality of this method.

Original languageEnglish
Pages (from-to)1120-1124
Number of pages5
JournalChinese Journal of Sensors and Actuators
Volume28
Issue number8
DOIs
Publication statusPublished - 1 Aug 2015
Externally publishedYes

Keywords

  • Convection coefficient
  • Electro-thermal Bimorph
  • Micro-actuator
  • Thermal resistance model

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