17.06.2013 Views

FIFTH CANADIAN CONFERENCE ON NONDESTRUCTIVE ... - IAEA

FIFTH CANADIAN CONFERENCE ON NONDESTRUCTIVE ... - IAEA

FIFTH CANADIAN CONFERENCE ON NONDESTRUCTIVE ... - IAEA

SHOW MORE
SHOW LESS

Create successful ePaper yourself

Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.

TRANSCEIVER<br />

digital<br />

signal<br />

display<br />

1<br />

A to D<br />

converter<br />

waveform<br />

storage<br />

- 313 -<br />

focused<br />

transducer<br />

Specimen<br />

A A<br />

Plotter<br />

7-<br />

3<br />

Mag netiC<br />

tap<br />

Pf_J<br />

Fig. 1. A schematic of the set-up.<br />

LEAKY RAYLEIGH<br />

WAVES<br />

Fig. 2. The basic configuration for<br />

the generation and detection of leaky<br />

Rayleigh waves.<br />

5,us<br />

„'User's<br />

"i Graphics<br />

terminât<br />

CRACK<br />

REFLECTI<strong>ON</strong><br />

EDGE<br />

REFLECTI<strong>ON</strong><br />

Fig. 3. An oscilloscope view of a<br />

signal from a Knoop indentation (100 pm)<br />

detected by 50 MHz leaky Rayleigh waves.<br />

The indentation was located 2 mm from<br />

the specimen edge.

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!