Boeing 747 - Page 41

GUIDE
TRANSDUCER
SIDE WITH NOTCHES
4
3
4
2
1
1
5
4
2
3
STANDARD
REFERENCE
5
TRANSDUCER
(NOT TO SCALE)
REFERENCE STANDARD
NDT4108
SOUND WAVES
EDM NOTCHES
TRANSDUCER GUIDE
TRANSDUCER
GUIDE
TRANSDUCER
B-B
SET SCREW
A-A
POSITION A
60%
40%
20%
100%
10 0
8
6
2
4
80%
A A
B
B
10P
ON
OFF
10N
0
0
20 40
60
E
D
U
A
+5
+1
2.25
5
1
OFF
P
/
4 6 8
10
20
0
2
4
6
8
10
%
(40%) (80%)
(51 MM) AND 4 INCHES (102 MM) OF SOUND
C
D
EFG
PUT THE BOTTOM OF THE TRANSDUCER EQUAL WITH THE BOTTOM
MODE CONVERSION SIGNALS - IGNORE THESE SIGNALS
SECOND BACK SURFACE SIGNAL - SET AT 80% FULL SCREEN WIDTH
FIRST
BACK SURFACE SIGNAL - SET AT 40% FULL SCREEN WIDTH
OF THE TRANSDUCER GUIDE
INITIAL PULSE SIGNAL
TRAVEL THROUGH THE REFERENCE STANDARD.
POSITION "A" ON REFERENCE STANDARD
SIGNALS WHEN THE TRANSDUCER IS AT
THE FIRST AND SECOND BACK SURFACE
NDT4108. THESE SIGNALS SHOW 2.0 INCHES
NOTES: _____
2130644 S0000459165_V1
Screen Calibration for Reference Standard NDT4108
Figure 6
747
NONDESTRUCTIVE TEST MANUAL
PART 4 54-30-06
Page 11
Nov 15/2015D6-7170
ECCN 9E991 BOEING PROPRIETARY - Copyright © Unpublished Work - See title page for details
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