Rail test with HBM

No caminho certo com sistemas completos da HBM

Medições no campo de veículos ferroviários incluem as seguintes tarefas:

  • Aquisição móvel de dados em um trem em movimento
  • Medições no corpo do veículo em banco de ensaios
  • Medições no trilho ou superestrutura

O sistema de medição flexível possibilita a aquisição e análise sincronizada de muitos canais. A técnica de frequência portadora assegura uma aquisição móvel de dados precisa, livre de influências eletromagnéticas.

Continuous monitoring of vehicle status

HBM is the partner of Argos Systems for more safety and transparency in rail traffic. This is how Argos Systems functions:

  • Local measuring points make it possible to continuously monitor, with constant quality levels, vehicle status and superstructure load parameters.
  • The measurements do not impede traffic at normal speeds on the operational track.
  • The vehicles do not require any equipment, but vehicle identification systems (transponders) can be incorporated.

Visit the Argos Systems Website

Simulations and calculations

Rail test fatigue software

HBM's nCode software branch itself began in the rail industry in the 1980s, so it is no surprise many companies in the design and operation of trains continue to derive benefits from the latest generation of nCode products.

Upfront design of train structures and bogies can be optimized for fatigue performance, thus saving weight and reducing energy required and damage to tracks. Operational measurements of strain and acceleration are taken on both train structures and tracks to predict failure and also assess damage. In this way, problems can be identified before they can cause failure and thus preventing serious derailments and accidents.

Typical applications and measurements are:

  • Understand fatigue of railway components like wheels, bogies, axles, etc.
  • Understand field loading – how often are bumps seen, how many starts/stops per hour or mile, etc.
  • Fatigue analysis of structural members
  • Ride quality analysis to understand the impact of ride and track harshness on the riders
  • Remote monitoring of tracks

Learn more about HBM nCode Durability Software

Rail measurements

Rail measurements

As part of the track structure in railway networks, rails are subject to high and permanent strains. In addition to material failures, weather influences and the effects of rail traffic can lead to various types of damage. HBM measurement technology helps in continuous monitoring of the rail network and in individual measurements on rails - for instance, in the following tasks:

  • Measurement of forces, mechanical stresses, accelerations and methods for determining lateral track displacement, longitudinal track displacement, track distortion, lateral sleeper displacement
  • Measurement of track component loading during operation
  • Investigations following changes in operating conditions, e.g. increasing axle load, speed, etc.
  • Detection and continuous monitoring or risk factors for derailments and overloading due to: Y and Q forces, load status, derailment coefficient, train formation, centrifugal force, curve travel, rolling characteristics, instabilities, rail displacement forces, wheel deformities
  • Verification of applicable rules
  • Data determination for Life Cycle Cost calculations

Measurements on carriages and rail vehicles

The current international standards (e.g. EN 15227) for rail test impose high requirements on the safety of rail vehicles. The aim of every new development in rail transport is to develop structures that are crash-safe with appropriate designs for maximum safety during collisions, impacts and crashes.

HBM measurement technology provides assistance, amongst others, for the following tasks:

  • Determination of requirements for the collision safety of passenger and driving compartments
  • Crash tests with force transducers

Road tests and acceptance runs

Rail test on roads

There are numerous application options and cases for mobile measurement data acquisition in rail traffic. Whether the dynamic behavior of railway carriages are involved or the checking of specific parameters: HBM measurement technology provides valuable services in road tests and acceptance runs.

  • For approvals: Investigations on curve junctions and/or a 190m track curve, and measurements on wheel contact and driving forces
  • Detection systems for unround wheels, vehicle detection stations, rail temperature, gauge changing systems and rail weighing bridges.

Component test bench measurements

Specific requirements must be complied with for the approval of components by national supervisory authorities (e.g. Federal rail office). Typical application cases are strength tests, driving tests and braking tests. The use of reliable measurement technology ensures a high level of safety and traceability of measurement results in these cases.

Numerous state accredited testing facilities therefore use HBM measurement technology for approvals in rail traffic, e.g. for:

  • Operation measurements for the analysis of loads and component loadings
  • Structural durability testing of wheel set shafts, bogie frames, complete wheel sets, draw gear and buffing appliances, and superstructure components
  • Experimental strength verifications on rail vehicles
  • Operational vibration analyses
  • Metrological accompaniment during introduction of new components for superstructures and their field tests
  • Investigation into effects of vibrations on components
  • Planning, performance and documentation of measurements for the documentation of the actual status
  • Measurements as per DIN 45672.

Measurements on overhead lines and high voltage components

Measurements on leading wires, overhead lines and high voltage components pose special challenges for measurement technology. The difficult electromagnetic ambient conditions often prevent the use of standard products, such as electric strain gages.

There are numerous new possibilities, with optical measurement technology based on Fiber Bragg sensors (optical strain gages, interrogators, software), for achieving correct and meaningful measurement results, even for measurements on overhead lines and high voltage components.

Optical measurement technology for rail test

Power and isolation data acquisition systems

Relatórios de aplicação sobre transporte ferroviário

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SoMat eDAQ used in Australian rail operations tests

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Measurement technology in railway engineering

Extensive testing is required for approval of railway vehicles. This includes complex test runs to measure, for example, the forces between wheel and rail, acceleration in the spring stages or relative displacements of moving...

Chinese tests highlight superiority of HBM’s eDAQ solutions

Comparative tests of data acquisition equipment for use on high-speed trains undertaken by the Beijing Jiaotong University in China have demonstrated the effectiveness of HBM’s SoMat eDAQ equipment when operating under extremely...

DB Minden is testing optical strain gages from HBM

Many tests and inspections are mandatory for approval of new railway vehicles. These include test runs with wheelsets enabling the forces between wheel and rail to be measured. At present, DB Systemtechnik in Minden, Germany, an...

RATP: Fatigue analysis of the structure of trains with GlyphWorks, MGCplus and SoMat eDAQ

In France, the RATP (Urban Public Transportation in Paris area, 6th largest company of Urban Transportation world wide) are using GlyphWorks to process data primarily coming from HBM MGCplus and SoMat eDAQ data acquisition...

TÜV SÜD Rail: Com QuantumX nas pistas do Glacier Express

Assim como viajar no Orient Express ou no Transiberiano, as viagens com o trem de Bernina e o Glacier Express são também o sonho dos amantes dos trilhos em todo o mundo. Este sonho se tornou realidade para os peritos do organismo...

RUAG: ICE no túnel aerodinâmico - Determinação da carga aerodinâmica em um túnel aerodinâmico

Geralmente, balanças de força e torque com strain gages (SG) são usadas para determinar cargas aerodinâmicas que agem em um objeto de teste em um ensaio de túnel aerodinâmico. Para este, o engenheiro de medição deseja, com...

Medellín Metro: Portable diagnosis system for mobile data acquisition

A major project being run by the EAFIT University – Colombian Institute for the Development of Science and Technology (Colciencias) and the Medellín Metro analyzed the dynamic response of the passenger cars.

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Monitoramento contínuo do status do veículo e dos parâmetros de carga da superestrutura