Model for thermoacoustic emission from solids

Hanping Hu; Tao Zhu; Jun Xu
May 2010
Applied Physics Letters;5/24/2010, Vol. 96 Issue 21, p214101
Academic Journal
A model for the thermoacoustic (TA) emission in both low and high frequency ranges is derived by fully coupled thermal-mechanical analysis. Accordingly, it has been theoretically confirmed that there exists a very wide range of constant (flat) amplitude-frequency response mostly in ultrasonic region for TA emission from any solid, and its existence conditions and frequency range as well as calculation formula are clarified and particularly given. The theory developed in this work agrees well with the experimental results, and is applicable to a variety of TA emission problems.


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