標題: | Response of thermoacoustic waves in stressed thin plates |
作者: | Hsu, Shih-Ming Yin, Ching-Chung 機械工程學系 Department of Mechanical Engineering |
關鍵字: | thermoacoustic reponse;residual stress;plate wave |
公開日期: | 2007 |
摘要: | The response of thermoacoustic waves propagating in a thin plate exerted by mechanical stress is characterized by the phase velocity dispersion curves and attenuation spectra in this paper. The stressed thin plate is assumed to be insonified. by an intensity modulated CW laser which is modeled as a Gaussian beam. The constitutive relations and governing equations are formulated within the framework of acoustoelasticity and thermo-elasticity. Attenuation spectra in the vicinity of folding frequency can be used as a significant Index correlative to residual stress in the specimen. The amplitude and phase of thermoacoustic response are sensitive to the mechanical stress applied to specimen if loading direction Is parallel to the direction of wave propagation. |
URI: | http://hdl.handle.net/11536/11867 http://dx.doi.org/10.1109/ULTSYM.2007.575 |
ISBN: | 978-1-4244-1383-6 |
ISSN: | 1051-0117 |
DOI: | 10.1109/ULTSYM.2007.575 |
期刊: | 2007 IEEE ULTRASONICS SYMPOSIUM PROCEEDINGS, VOLS 1-6 |
起始頁: | 2287 |
結束頁: | 2290 |
顯示於類別: | 會議論文 |