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Figure 5-71. Pulse-Echo Method
Ringing Method
TM-1-1500-335-23 Nondestructive Inspection Methods Manual
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T.O. 33B-1-1
5-73
5.4.5.2.3
Indications may be mapped by marking the
boundaries
where the back echo signal drops below 50 percent of the
amplitude obtained in a good area (see Figure 5-72).
Figure 5-72
.
Mapping of Unbonds, Pulse-Echo Method.
