Key advantages

  • High resolution inspection and fast scan speed
  • Automated feature detection
  • Evaluation algorithm with feature clustering
  • Automated re-evaluation of wheels with indications
  • Modular system design with standard components for rim, hub and web
  • Integrated into the wheel inspection line

The Solution

With RAWIS (Railway Wheel Inspection System), ROSEN has designed an innovative and modular inspection system for the automated ultrasonic testing (UT) of railway wheels. The wheel rim and wheel hub are inspected by phased array probes, while the web of the wheel disk is inspected by two conventional UT probes with water jet coupling. One squirter assembly, including the probe, is installed on each multi-axle robot for the inspection. The robots are installed behind and in front of the wheel, positioning the squirters perpendicular to the contour of the wheel disk. The contour of the wheel disk is automatically scanned by a laser sensor prior inspection. Gathered contour data are transmitted to the robots’ control software, guaranteeing an ideal position of the UT probe over the disc surface. This allows automated ultrasonic inspection of railway wheels during the manufacturing process, inspecting a wide range of products – independent of batch sizes and without any loss of productivity.


Technical details

  • Ultrasonic testing requirements as specified in EN 13262, ISO 5948, AAR M107/208
    (others on request)
  • Dead zone ≤ 5 mm
  • Sensitivity
    • FBH 1 mm for wheel rim
    • FBH 3 mm for wheel hub and web
  • Wheel diameter range: 540 mm – 1,350 mm (others on request)
  • Inspection time 60 sec/wheel for cargo wheel and 90 sec/wheel for high speed wheel