Heavy rail / Urban light rail

Bolted assemblies

Assess, qualify and verify bolted assemblies, analyze their weaknesses and propose solutions.

Objectives

  • Qualify bolted assembly procedures
    – Study bolt assembly procedures via clamping (on site or in laboratory)
    – Study the behaviour of assemblies in revenue service
  • Check the conformity of products (tooling, nuts and bolts, etc.)
  • Fix bolted assembly dimensions
    – Conduct failure analyzes

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Test
facilities

  • Ultrasonic and strain gauge testing equipment for measuring clamping forces
  • Test rigs for bolted assemblies
  • « Torque/angle » analyses
  • Scanning electron microscopy, micrography, hardness, tension
  • COBRA calculation tool

Our
references

Satisfied customers

ALSTOM
SNCF
RATP
THI (THALYS)

Norms

- STMX 810 -

Recommendations for bolted and screwed connections of components used in passenger rolling stock

- ST 001 -

Fasteners, etc.

- EN ISO 898-1 -

- EN ISO 898-2 -

The following products may be of interest to you

Product
Failure analysis
Assess, qualify and verify bolted assemblies, analyze their weaknesses and propose solutions.
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Heavy rail - Urban light rail
Product
Welded assemblies
Assess, qualify and verify bolted assemblies, analyze their weaknesses and propose solutions.
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