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Design and application of a small size SAFT imaging system for concrete structure
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10.1063/1.3610459
/content/aip/journal/rsi/82/7/10.1063/1.3610459
http://aip.metastore.ingenta.com/content/aip/journal/rsi/82/7/10.1063/1.3610459
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Block diagram of the SAFT detection system.

Image of FIG. 2.
FIG. 2.

Proto-type instrument.

Image of FIG. 3.
FIG. 3.

Working principle of the transducer array.

Image of FIG. 4.
FIG. 4.

Block diagram of the multiplexer.

Image of FIG. 5.
FIG. 5.

Divergence angle and SAFT aperture.

Image of FIG. 6.
FIG. 6.

Sketch plot of transducer array.

Image of FIG. 7.
FIG. 7.

Original waveforms measured by four channels in the transducer array.

Image of FIG. 8.
FIG. 8.

Comparison of signal spectrum (a) before and (b) after wavelet transform.

Image of FIG. 9.
FIG. 9.

Compensation results after using the compensation filter.

Image of FIG. 10.
FIG. 10.

Step of refined scan.

Image of FIG. 11.
FIG. 11.

Concrete block in water tank and image result.

Image of FIG. 12.
FIG. 12.

Concrete structure and image result.

Image of FIG. 13.
FIG. 13.

Staircase block and SAFT imaging result.

Image of FIG. 14.
FIG. 14.

Comparison of coarse scan and refined scan.

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/content/aip/journal/rsi/82/7/10.1063/1.3610459
2011-07-27
2014-04-20
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Design and application of a small size SAFT imaging system for concrete structure
http://aip.metastore.ingenta.com/content/aip/journal/rsi/82/7/10.1063/1.3610459
10.1063/1.3610459
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