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Ultrasonic Testing - Coggle Diagram
Ultrasonic Testing
Angle Beam Inspection
Beam Index Point
Refraction Angle
Calibration
DA
- depth of flaw
SA
- Sound path
measure from index point to flaw on surface of specimen
PA
- Surface distance
distance that sound beam travelled in specimen
wedges are marked with a nominal angle
note degree mark on test block - actual refracted angle
:
Point at which the center of the sound beam exits from the wedge.
confirm the backwall echo signal
Used for inspection of welds due to the geometry of defects (not parallel to surface of part
Use principle of refraction and mode conversion at a boundary to produce refracted shear or longitudinal waves in test piece.
Wedges
To introduce the ultrasonic sound beam at different angles into samples.
Depth of defect
Sound path of the sound beam
Surface distance of the defect
Dependent on which leg the defect occurs
IIW BLOCK
Legs
which defects are in which "sections"
Phased Array (Zero Degree Beam)
Many individual elements (32 & 64)
Fired separately
Focal laws control set of time delays - between which group of elements are fired
can generate multiple scanning angles
Carbon fibre
Red and blue on
cross-sectional view
represent defect, with red having high intensity
Uses sophisticated multielement array transducers and powerful software to steer high frequency sound beams through test piece and map returning echoes
same principle of operation but uses many sensors which speeds up process.
Differences
Reduces inspection times
Focus better without moving probe so much
Uses elements
