Heavy rail / Urban light rail

Residual stresses

Precisely quantify residual stresses in running gear or the OCL to prevent failures.

Objectives

Evaluate residual stresses in railway components through three types of measurement:

  • Ultrasonic
  • Extensometry
  • X-ray diffraction

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Test
facilities

  • Ultrasonic measurements: Device for measuring on a test bench or under the vehicle (with or without contact)
  • Extensometry: Strain gauges used to measure stress after successive cuttings of the part (destructive method)
  • X-ray diffraction measurements: Portable system (iXRD MGR40) for on-site measurements – non-destructive method for surface evaluation + semi-destructive method for sub-layer evaluation

Our
references

Satisfied customers

ALSTOM
BONATRANS
CAF
MG VALDUNES

Norms

- EN 13261 -

Railway applications – Wheelsets and bogies - Axles - Product requirements Measurements on axles using X-Ray diffraction

- EN 13262 -

Wheelsets and bogies - Wheels - Product requirements. Extensometric measurements

- EN 13979-1+A2 -

Wheelsets and bogies - Monobloc wheels - Technical approval procedure - Part 1: Forged and rolled wheels. Utrasonic measurements

- UIC 510-5 OR -

Technical approval of monobloc wheels - Application document for standard EN 13979-1

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Residual stress analysis by x-ray diffraction
Precisely quantify residual stresses in running gear or the OCL to prevent failures.
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Heavy rail - Urban light rail