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Photoacoustic measurements of thermal diffusivity description of the ’’drum effect’’

 

作者: P. Charpentier,   F. Lepoutre,   L. Bertrand,  

 

期刊: Journal of Applied Physics  （AIP Available online 1982）
卷期: Volume 53, issue 1  

页码: 608-614

 

ISSN:0021-8979

 

年代: 1982

 

DOI:10.1063/1.329966

 

出版商: AIP

 

数据来源: AIP

 

摘要:

Thermal diffusivities of metals can be accurately measured by the photoacoustic method. It is necessary, however, to use rear‐surface illumination and to work at sufficiently high modulation frequency. Furthermore, to prevent mechanical vibrations of the sample due to its periodic dilatation (’’drum effect’’), this sample must be carefully fixed on the backing.

 

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