Heavy rail / Urban light rail

Brake tests

Eurailtest offers brake tests to measure the performance of the train braking system for type approval or development purposes. Online or static brake testing can be performed as well as WSP device characterization.

Brake testing on open line

Measure the braking performance and associated forces for the type approval or development of any kind of rolling stock.

Tests objectives:

  • Develop, validate and measure braking performance during:
    – Tests carried out on a trainset, a convoy or a traction unit
    – Slip brake tests on all kinds of rail vehicles
  • Characterize under normal and degraded wheel/rail adhesion: Emergency brake, service brake, locking brake, parking brake
  • Determine key parameters: Equivalent response time, jerk, corrected stopping distance, average equivalent deceleration
  • Monitor related parameters: Pressure in brake cylinders, brake component temperature, axle speed, test conditions (temperature, relative humidity)
  • Characterize and qualify brake parts
  • Measure forces applied to the wheels and discs

Tests facilities:

  • Tachometric measuring device
  • Doppler radar
  • GPS
  • Measuring system for various types of parameters: Temperature (disc/wheel), acceleration, voltage and current (electric brake, magnetic pad, etc.), pressure, etc.
  • Brake activation device
  • Track watering system

 

Accreditations:

ISO/IEC 17025 awarded by COFRAC

 

Testing norms:

STI Loc and Pass

NF EN 13452-1 & -2 – Braking – Mass transit brake systems –
Part 1: Performance requirements.
Part 2: Methods of test

UIC 540 – Air Brakes for freight trains and passenger trains

UIC 541 – 02/03/04 – Brakes – Regulations concerning manufacture of the different brake parts

UIC 544-1 – Braking power

TSI – Rolling Stock – Conventional rail, High speed, Freight wagons

STM F014 – Network Technical Specifications

 

Static brake tests

Contributing to the type approval process of a braking system by means of static tests

Tests objectives:

  • Validate brake control components (driver’s brake valve, self-adjusting brake valve, etc.)
  • Validate and measure the application forces generated by the braking system
  • Measuring the holding capacity of the brake when the train is at standstill by establishing the friction coefficient or the adhesion (wheel/brake block or wheel/ rail)

Tests facilities:

Measuring chain equipped with sensors for automatic compliance checks (measurements + functional analysis + validation)

Testing norms:

UIC 540 – Air brakes for freight and passenger trains

UIC 541 – 03/04/05 – Regulations concerning manufacture of the different brake parts

TSI – Rolling Stock – Conventional Rail, High Speeds, Freight wagons

 

WSP device characterization

Gauging the efficiency of WSP devices for type approval or development purposes.

Tests objectives:

  • Characterize performance of wheel slide protection devices during emergency and service braking for various rail adhesion conditions (normal, downgraded, highly downgraded)
  • Monitor and record the following parameters: Axle speed, reference speed, brake cylinder pressure, brake component temperature, test conditions (temperature, relative humidity)

Tests facilities:

  • Brake activation device
  • Pressure sensors
  • Thermocouples
  • Data acquisition and processing chain
  • Tachometric measuring device associated with Doppler radar
  • System for reducing rail adhesion (by spraying water or oil onto the track)
  • Current/torsion sensors

 

Accreditations :

ISO/IEC 17025 awarded by COFRAC

 

Testing norms:

Loc and Pass TSI

NF EN 15595+A1 – Railway applications – Braking – Wheel slide protection

UIC 544-1 – Frein – Braking power

UIC 544-05 – Frein – Brakes – Regulations concerning manufacture of the different brake parts – Wheel slide protection

freinage

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Our references

ALSTOM
BOMBARDIER
RATP
SNCF
ROLANFER
FRAMAFER
STADLER
TRAMWAY DE ROUEN
SIEMENS