Ultrasonic Testing · Level 1
Critical Angles — Build the Probe, Watch the Beam
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1
Drag a plastic wedge onto the probe
2
Drag the probe onto the steel
3
Watch what enters the steel
Replay
Try another wedge
Longitudinal
Shear
Surface wave
2 beams · L + S
1 beam · S only
no beam
0°
1st critical
27.5°
2nd critical
57°
90°