The spread half-angle follows sinθ = Kλ/D for aperture D and wavelength λ, where K depends on the amplitude drop chosen (0.44 for −6 dB with a square element). The dashed lines on the beams show the spread; the Spread beamset type widens the aperture until the spread meets a coverage target.
Other topics
- Probe and wedge
- Beamsets
- Part and weld
- Calibration blocks
- Custom parts
- Indications
- Pressure map, delay view and wave animation
- Wedge designer
- Zonal coverage
- Reports
- Files and exports
- Workspace files
- Results pane
- Focal laws
- Focus types
- Near field
- Beam spread
- Weld editor
- Zone naming
- Pipes and curved parts
- Calibration templates
- Drawing editor basics
- Snaps
- Layers
- Trim and extend
- Part templates
- Quality maps
- Full-matrix capture and A-scans
- Time-of-flight diffraction
- High-temperature wedges
- Drawing export
- Probe, wedge and transducer files
- View controls
- Options
- Units
- Report templates
- Layout editor
- Word export
- Accounts and access
- Keyboard shortcuts
- Transducer fields
- Indication types
- Warnings
- Technician guide: from part to plan