described. The ultrasonic technique used for the examination is based on modern ultrasonic flaw detectors.
Using a rail-inspection train, railroads are continuously checked for traffic-induced defects because high train speeds
and heavy axle loads are the critical factors affecting the service life of the rails. Up to the present time, only ultrasonic
inspection was used. In addition, eddy-current inspection could successfully and efficiently be used to detect and
evaluate certain surface cracks—so-called head checks. There have already been reports about laboratory tests, which
proved the general suitability of this test method [12,13].
The next step—described here—consisted of practical trials under real-life conditions. A test system that is able to fulfil the
strict requirements (test speeds of up to 100 km/h, complex probe guidance, suppression of electrical and mechanical
interference, recording of data, filtering and evaluation of data) was developed. As part of the rail-inspection train and as
a manual system, this inspection system was successfully tested on railroads under real conditions.
described. The ultrasonic technique used for the examination is based on modern ultrasonic flaw detectors. Using a rail-inspection train, railroads are continuously checked for traffic-induced defects because high train speedsand heavy axle loads are the critical factors affecting the service life of the rails. Up to the present time, only ultrasonicinspection was used. In addition, eddy-current inspection could successfully and efficiently be used to detect andevaluate certain surface cracks—so-called head checks. There have already been reports about laboratory tests, whichproved the general suitability of this test method [12,13].The next step—described here—consisted of practical trials under real-life conditions. A test system that is able to fulfil thestrict requirements (test speeds of up to 100 km/h, complex probe guidance, suppression of electrical and mechanicalinterference, recording of data, filtering and evaluation of data) was developed. As part of the rail-inspection train and asa manual system, this inspection system was successfully tested on railroads under real conditions.
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described. The ultrasonic technique used for the examination is based on modern ultrasonic flaw detectors.
Using a rail-inspection train, railroads are continuously checked for traffic-induced defects because high train speeds
and heavy axle loads are the critical factors affecting the service life of the rails. Up to the present time, only ultrasonic
inspection was used. In addition, eddy-current inspection could successfully and efficiently be used to detect and
evaluate certain surface cracks—so-called head checks. There have already been reports about laboratory tests, which
proved the general suitability of this test method [12,13].
The next step—described here—consisted of practical trials under real-life conditions. A test system that is able to fulfil the
strict requirements (test speeds of up to 100 km/h, complex probe guidance, suppression of electrical and mechanical
interference, recording of data, filtering and evaluation of data) was developed. As part of the rail-inspection train and as
a manual system, this inspection system was successfully tested on railroads under real conditions.
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