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A thermal insulation method for a piezoelectric transducer

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  • Mechanics
  • Published:
Chinese Science Bulletin

Abstract

This study deals with the sources of signal distortion of a piezoelectric transducer heated by measured gas flow. These signal distortions originate from both unloading of preload on a piezocrystal because of expansion of a diaphragm in the test apparatus and the pyroelectric effect of a heated piezoelectric crystal. A plastic film on the diaphragm of the transducer can effectively insulate the diaphragm and the piezocrystal within transducer from heating by gas flow, eliminating the sources of distortion. A method for evaluating the thickness of the film is proposed.

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Author information

Authors and Affiliations

  1. Key Laboratory of High Temperature Gas Dynamics, Institute of Mechanics, Chinese Academy of Sciences, Beijing, 100080, China

    Wu Song, Chen Hong, Gu JiaHua & Yu HongRu

Authors
  1. Wu Song
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  2. Chen Hong
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  3. Gu JiaHua
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  4. Yu HongRu
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Corresponding author

Correspondence to Yu HongRu.

Additional information

Supported by the National Natural Science Foundation of China (Grant No. 90605006)

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Cite this article

Wu, S., Chen, H., Gu, J. et al. A thermal insulation method for a piezoelectric transducer. CHINESE SCI BULL 52, 2305–2309 (2007). https://doi.org/10.1007/s11434-007-0366-y

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  • DOI: https://doi.org/10.1007/s11434-007-0366-y

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