Measurement of circumferential Lamb waves using a line-focus poly(vinylidene fluoride) transducer and cross correlation waveform analysis

Chun I. Lin, Yan Lu, Cunfu He, Guorong Song, Yung Chun Lee

研究成果: Article同行評審

5 引文 斯高帕斯(Scopus)

摘要

This paper presents a method for measuring circumferential Lamb waves propagating on a cylindrically curved thin plate. The measurement is carried out using a wideband and line-focused poly(vinylidene fluoride) transducer along with a defocusing waveform measurement method. After synthesizing the acquired waveforms, interference patterns can be obtained and a cross correlation method is developed to accurately extract the wave velocity as a function of wave frequency. Using three stainless steel thin plates of different thicknesses (100, 150, and 300 μm) and a radius of curvature of 10 mm, dispersion curves for several fundamental and higher order modes of circumferential Lamb waves are simultaneously determined. Theoretical dispersion curves are also calculated and compared with their experimental counterparts. Very good agreements are observed, which concludes the measurement accuracy of this measurement method.

原文English
頁(從 - 到)2738-2743
頁數6
期刊Journal of the Acoustical Society of America
138
發行號5
DOIs
出版狀態Published - 2015 11月 1

All Science Journal Classification (ASJC) codes

  • 藝術與人文(雜項)
  • 聲學與超音波

指紋

深入研究「Measurement of circumferential Lamb waves using a line-focus poly(vinylidene fluoride) transducer and cross correlation waveform analysis」主題。共同形成了獨特的指紋。

引用此