FIFTH CANADIAN CONFERENCE ON NONDESTRUCTIVE ... - IAEA

d (mm)
Y (deg)
d (mm)
Y (deg)
d (mm)
Y (deg)
d (mm)
Y (deg)
d (mm)
Y (deg)
d (mm)
Y (deg)
- 121 -
Table 1 - Comparison of diameters and orientations of the brass rods
measured from frequency and time analysis with the caliper
values. All brass rods were held vertically
Caliper
values
2.02
0.0
2.96
0.0
4.02
0.0
5.02
0.0
6.01
0.0
7.00
0.0
Frequency
analysis
1.78
2.2
2.99
-0.3
3.81
0.8
4.76
0.4
4.93
2.7
5.99
2.1
% error
-12.1
1.1
-5.3
-5.2
-18.0
-14.5
Time
analysis
2.20
-1.5
2.92
0.3
3.94
0.8
4.27
3.2
5.93
0.1
6.77
0.9
Table 2 - The table shows that AtAf~l for all orientations
The 5.02 mm diam brass rod was taken as an example
8 (deg)
6.4
12.7
18.9
25.1
31.1
at (us)
0.82
1.60
2.20
2.80
3.20
if (MHz)
1.29
0.69
0.47
0.36
0.30
AtAf
1.06
1.11
1.04
1.00
0.96
% error
8.7
-1.4
-2.1
-15.0
-1.4
-3.2