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![]() ![]() ![]() The outer shape of the railway wheelset axle shaft may be entered right in the instrument through the simple routine. Alternatively the templates of the outer shapes for various shafts may be imported from the CAD drawings The inspection is performed through the sectorial scan compression wave insonification of the material by means of PA probe situated at the accessible side end surface of the shaft. Whilst implementing the desired sequence of pulsing receiving cycles (Scan Plan) each focal low is characterized by the individually settled focal point “travelling” along the outer surface of the shaft, and the corresponding time base; the sensitivity is equalized within entire insonified section of the material through use of the independent mechanisms of Angle Gain Compensation (AGC) and DAC/TCG acting simultaneously thanks to the unique ability of ISONIC Series PA instruments: the DAC / TCG mechanism is used purely for compensating the dependency of echo amplitude on the material travel distance while the feature of varying Gain per Focal Law voluntarily is utilized just for the forming of easy-reproducible AGC plan. Both the DAC / TCG and AGC plans are created independently on each other with use of the same set of reference reflectors. The sharp focusing is provided through utilizing the full aperture for the firing and receiving of the signals (depending on the PA probe and adaptor used - up to 128:128) At last the whole volume of the material is inspected in one revolution of the shaft itself or of the PA probe moving around the end surface. The homogeneous sensitivity and true-to-geometry cross-sectional coverage and imaging are provided so for every radial position of the PA probe along with 100% raw data capturing and “on-the-fly” forming of the unfolded C-Scan imaging. On completing the scanning revolution the 3D image of the shaft and automatically created editable defect list are available immediately. True-to-geometry imaging allows easy distinguishing between the defects indications and geometry echoes The various scan plans for several regions of interest in the shaft may be created separately and implemented simultaneously then through utilizing of the MULTGROUP mode
ISONIC RW Axle Test software is featured with:
The short movies below illustrate detection of the reference reflectors (notches) in the railway wheelset axle shaft calibration block with use of the ISONIC 3510 and ISONIC 2009 UPA Scope instruments 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
DOWNLOAD AND PLAYBACK THE EXEMPLARY INSTRUMENTS FILES
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