The flaw detector is intended for defect detection on the running surface of both rails and in the rail cross-section, excluding rail base blades. It employs a flaw detection trolley for continuous testing and manual probes for confirmatory testing of individual rail cross-section segments and welded joints.
Flaw detector advantages
- complete scanning of the rail (excluding rail base blades) due to the flaw detector multi-channelling
- built-in standard settings for channel operation
- determining the distance and speed during continuous testing
- real-time test result display in B-Scan mode (for four channels)
- scanning and saving the information every other millimetre of travelled distance from all channels
- test results recorded at different sensitivity levels
- registration of all test results and advanced capabilities of data analysis
- the flaw detector with the standard scanning scheme applied enables detecting all types of fatal defects, appearing during the operation of a rail track.
Flaw detector distinctive features
- large colour high-contrast TFT display
- encoder synchronisation
- information display forms: А-Scan, B-Scan
- number of channels for continuous testing: 26
- number of channels for manual testing: two
- techniques and areas of railhead testing
- Techniques and areas of testing the web and its projection in the base
- transverse cracks in the 2nd-category railhead, including well-developed transverse cracks with reflecting surface and the ones developing under horizontal rolling surface separations which are not detected by the standard echo technique
- longitudinal horizontal cracks in the web, even if they do not reach the rail axis in their development and in the head, including the ones that do not go beyond the web projection
- longitudinal horizontal cracks located in the middle of the rail height
- cracks from bolt holes, including the ones at an early stage of their development when they do not go beyond the bolt hole projection onto the roll surface
- vertical cracks in the base and web located mainly along the rail axis
- transverse corrosion cracks in the base located in the web projection area
Instrument Service Functions
- sound and visual alarm, mode switching with the help of ‘hot buttons’
- electronic registration of test results from all channels allows reinterpreting them and making complete reports
- mode of determining the rail type and automatic correction of settings
- mode of testing bolt holes with special settings
- B-Scan in real time is used from one, two or four channels (of the left and right rails of driving-into and driving-out channels) for the in-depth analysis of detected signals, apart from the common information display in the form of А-scan
- possibility of TCG curve (of any shape) plotting