PA UT (PAUT): Butt Welds - Planar and Circumferential

ISONIC EXPERT software application was created for the inspection of planar and circumferential butt welds with symmetrical bevel, and the like with use of wedged linear array probes situated either on the parent material or on the machined weld cap

PDF Brochure

This inspection software option is available for the ISONIC 3510, ISONIC 2010, and ISONIC 2009 UPA Scope instruments and featured with:
  • Built-In Weld Geometry Editor and Ray Tracer - Scanning Pattern (Scan Plan) Design
  • Intuitive Image Guided PA Pulser Receiver with Beam Forming View
  • True-To-Geometry Cross-Sectional Coverage (sectorial and / or linear) and line scanning along the fusion line either encoded or time based
  • "On-the-fly" True-To-Geometry Weld Overlay Volume Corrected Imaging:
    • Cross Sectional Slices
    • Top (C-Scan) View
    • Side View
    • End View
    • 3D View
  • DAC / TCG Data / Image Normalization
  • Independent on TCG Angle Gain Compensation / Gain Per Focal Law Correction
  • Automatic Coupling Monitor
  • 100% Raw Data Capturing
  • FMC/TFM Protocol for the data acquisition and imaging
  • Automatic Defects Alarming Upon C-Scan Acquisition Completed
  • Automatic Creation of Editable Defects List
  • Comprehensive Postrpocessing Toolkit Including:
    • Recovery and Evaluation of the Captured A-Scans from the Recorded Cross Sectional Views and C-Scans
    • Recovery of the Cross Sectional Views from the Recorded C-Scans
    • Converting Recorded C-Scans or their Segments into 3D Images
    • Off-Line Gain Manipulation
    • Off-Line DAC Normalization of the Recorded Images / DAC Evaluation
    • Numerous Filtering / Reject Options ( by Geometry / Position / By Amplitude db-toDAC / etc ) and Regeneration of the Corresponding of Editable Defects List and Storing it into a Separate FIle
    • Defects Sizing
    • Automatic creating of inspection reports - hard copy / PDF File

The movie below illustrates inspection of planar butt welds with coupling monitoring and checking for the laminations in the heat affected zone. ISONIC 3510 instrument and draw wire encoder are used

The movies below illustrate inspection of planar butt welds with use of the ISONIC 3510 instrument whilst the encoding of probe position is performed by the magnetic wheel and draw wire encoder

The movie below presents the rope / scaffolding access inspection of circumferential butt weld with the use of chain scanner. The VAUT technology is involved to provide the video weld tracking record embedded into PA UT data file

The movie shows the detection of longitudinal crack in the bottom bead of the thin wall stainless steel weld

The movie below illustrates the use of ISONIC 2010 instrument and the bracelet scanner whilst scanning the reference block for the inspection of circumferential butt welds in the small OD boiler tubes

The one-click-implemented automatic generation of the editable defects list is featured with:

  • Detection and marking all indications returning echoes exceeding the desired threshold level
  • Characterizing of the indications presenting their:
    • Position along the fusion line and length
    • Depth and projection height
    • Position in the cross-section and the projection width
    • Area size
    • Maximal and average echo amplitudes (dB-to-DAC / dB-to-Gate-level)
    • True-to-geometry 3D-imaging of each defect highlighted at the background of weld volume and other defects nearby extremely easing and speeding up data interpretation thanks to the provided ability of 3D-view manipulation
  • Export of the finalized list of defects and all their characteristics into MS Excel file

  • As per operator's will the defects list may be generated by the instrument for every weld section immediately upon the scanning completed. Alternatively the defects list may be created at the postprocessing stage any moment upon the scanning file is open either in the instrument or in the regular PC running under Win'XP, 7, 8, 10 with use of the freely distributable ISONIC PA Office software package as it is illustrated in the exemplary video below representing the defects characterization and interpretation for a test piece of austenitic weld comprising large number of discontinuities. But even for the weld, which is really full of various defects, the highest rapidness of the data interpretation is provided:

    The movie below illustrates the results of scanning of the Z-Cut ASTM E-1961 calibration block for the inspection of girth welds; the block contains reference reflectors (flat bottom holes and notches) at various locations. The pure S-Scan, the EquPAS S-Scan coverage and imaging were aplied along with the TFM sharpening of the pure S-Scan data:

    Note: In order to accelerate the data stream the videos above are linked to the Youtube. In case the YouTube may not be accessed from your location please use the link below


    The archive comprices some Exemplary Instrument Files for this application

    The files should be extracted from the archive and played in the regular PC running under Win'XP, 7, 8, 10 with use of the freely distributable ISONIC PA Office software package