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


文件中的檔案:

  1. 000254281802072.pdf