学術雑誌論文

学術雑誌論文

text

The Journal of the Acoustical Society of America. 2018, 143(4), p. EL260-EL265

Defect imaging for plate-like structures using diffuse field

Hayashi, Takahiro

Acoustical Society of America

英語

text

2018-04-12

https://doi.org/10.1121/1.5030915

Takahiro Hayashi. Defect imaging for plate-like structures using diffuse field. Journal of the Acoustical Society of America, 2018, 143(4), EL260. https://doi.org/10.1121/1.5030915.

Defect imaging utilizing a scanning laser source (SLS) technique produces images of defects in a plate-like structure, as well as spurious images occurring because of resonances and reverberations within the specimen. This study developed defect imaging by the SLS using diffuse field concepts to reduce the intensity of spurious images, by which the energy of flexural waves excited by laser can be estimated. The experimental results in the different frequency bandwidths of excitation waves and in specimens with different attenuation proved that clearer images of defects are obtained in broadband excitation using a chirp wave and in specimens with low attenuation, which produce diffuse fields easily.

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84490

Defect imaging for plate-like structures using diffuse field

Hayashi, Takahiro

Acoustical Society of America

英語

2018-04-12

The Journal of the Acoustical Society of America

143

4

EL260

EL265

https://doi.org/10.1121/1.5030915

29716297

https://hdl.handle.net/11094/84490