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Test piece
crack
0 2 4 6 8 10
initial
pulse
crack
echo
back surface
echo
UT Instrument Screen
Delays
Delays
Delays
TX RX
Lateral wave
LW
Upper tip Lower tip
Back-wall reflection
BW
Porosity may image in many forms whether individual or cluster
12
3
1
2
• Acoustic emission (AE) is the sound waves produced
when a material undergoes stress (internal change), as a
result of an external force.
• This occurrence is the result of a small surface
displacement of a material produced due to stress waves
4.Acoustic emission
13
• Compressed Air Leak Detection
• Steam Trap Inspection
• Valve Leak Detection
• Pressure & Vacuum Leak Detection
• Heat Exchanger, Leaks
• Tanks, Pipes, Leak Testing
• Wind Noise/Water Leaks
• Gear/Gear Box Inspection
Major Application
Castings Forgings
Welds Composites
Applications

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Advanced ndt techenique