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Coating thickness and elastic modulus measurement using ultrasonic bulk wave resonance
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10.1063/1.2192144
/content/aip/journal/apl/88/14/10.1063/1.2192144
http://aip.metastore.ingenta.com/content/aip/journal/apl/88/14/10.1063/1.2192144
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Time domain wave form (A scan) showing modulation due to interference between the two orthogonal shear wave polarizations for the through thickness shear wave modes of a thick aluminum sheet. The inset shows that individual shear wave pulses are not distinguishable.

Image of FIG. 2.
FIG. 2.

FFT of the A scan in Fig. 1 showing what is actually a double peak structure centered around . Only one double peak is visible in this case as the wave form does not contain sufficient ultrasonic signals at the next resonant frequency at approximately .

Image of FIG. 3.
FIG. 3.

“Zoomed in” FFTs of the A scans for an uncoated thick aluminum sheet (black and on right) and a thick aluminum sheet from the same strip with a nominal thick polymer coating (gray and on left). Note that the double peak structure is due to acoustic birefringence in the aluminum.

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/content/aip/journal/apl/88/14/10.1063/1.2192144
2006-04-04
2014-04-20
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Coating thickness and elastic modulus measurement using ultrasonic bulk wave resonance
http://aip.metastore.ingenta.com/content/aip/journal/apl/88/14/10.1063/1.2192144
10.1063/1.2192144
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