学術雑誌論文

学術雑誌論文

text

Ultrasonics. 2012, 52(5), p. 636-642

Frequency dependence of images in scanning laser source technique for a plate

Elsevier Ltd

英語

text

2012-07

https://doi.org/10.1016/j.ultras.2012.01.003

Defect imaging using scanning laser source technique has been investigated for a plate with rounded defects and notch-type defects in our previous studies. This paper examines frequency dependence of the defect images with both calculations and experiments in order to acquire clearer images. Both calculation and experimental results for a straight notch revealed that clearer images of notch-type defects can be obtained in the range of low frequency-thickness product below about 200 kHz mm. Moreover, images of the defects of various shapes were obtained by synthesizing images from eight receiving transducers, and similarly to the case of the straight notches, they became more clearly in the low frequency range.

© 2012 Elsevier B.V. This manuscript version is made available under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

84497

Frequency dependence of images in scanning laser source technique for a plate

Elsevier Ltd

英語

2012-07

Ultrasonics

52

5

636

642

https://doi.org/10.1016/j.ultras.2012.01.003

https://hdl.handle.net/11094/84497