NDLI: A Modified Photoacoustic Piezoelectric Model for Thermal Diffusivity Determination of Solids

Content Provider	Springer Nature Link
Author	Sun, Qiming Gao, Chunming Zhao, Binxing Bi, Yanfang
Copyright Year	2010
Abstract	The conventional photoacoustic piezoelectric (PAPE) model did not take into account the influence of the piezoelectric transducer (PZT) on the vibrations of the sample, and this approximation brought certain error. In this article, a simple method has been proposed to investigate the vibrations of the sample–PZT combination, and the theory of the PAPE technique has been modified. By introducing an equivalent thickness parameter, the two-layered model has been simplified and an analytical expression for the phase of the PAPE output signal has been obtained. The experimental system has been set up, and the thermal diffusivities of several metal samples have been measured. The experimental results show that the modified model has a higher accuracy than the conventional model.
Starting Page	1157
Ending Page	1164
Page Count	8
File Format	PDF
ISSN	0195928X
Journal	International Journal of Thermophysics
Volume Number	31
Issue Number	6
e-ISSN	15729567
Language	English
Publisher	Springer US
Publisher Date	2010-06-20
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Photoacoustic piezoelectric technique Thermal diffusivity Physical Chemistry Mechanics Condensed Matter Physics Industrial Chemistry/Chemical Engineering
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics

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A Modified Photoacoustic Piezoelectric Model for Thermal Diffusivity Determination of Solids