RAILWAY
  • 15/11/2018
    Why wait to schedule your 2019 training programs ?
  • 05/11/2018
    Jessica Neufond will represent VibraTec in Le Mans on 15-16 Nov at the Young Researchers’ Days in vibrations, Acoustics and Noise
  • 08/10/2018
    SIA CTTM Automotive NVH congress – Le Mans, October 17th & 18th, 2018
  • 01/10/2018
    Automotive Noise and Vibration Congress India 9-10 October 2018
  • 11/09/2018
    CM 2018 in Delft, Netherlands: Rail joint dynamic forces computations, including rail plasticity
  • 31/08/2018
    September 2018 International Railway Conference : ‘Rad-Schiene’ in Dresden
  • 23/08/2018
    Dealing with gear noise of real industrial systems: an overview of the difficulties and the achievements
  • 14/08/2018
    ShareLab – invite yourself to VibraTec !
  • 31/07/2018
    VibraTec – European partner for tomorrow’s cities
  • 17/07/2018
    Acoustic design of Trains and Tracks
  • 06/04/2018
    Come and meet VibraTec at TRA 2018
  • 20/03/2018
    Comprehensive innovative monitoring solutions to be presented at ACHEMA
  • 14/03/2018
    VibraTec very first railway seminar in Malaysia !
  • 18/09/2017
    Why wait to schedule your 2018 training programs ?
  • 18/07/2017
    VibraTec’s training programs referenced by DataDock
  • 04/07/2017
    VibraTec – tackling railway measurement & simulation issues for more than 30 years !
  • 07/06/2017
    Controlling joints to improve railway infrastructure reliability
  • 01/06/2017
    Dynamic response: a pertinent indication of structural mechanical reliability
  • 03/05/2017
    VibraTec Asia Pacific to be part of Rail Solutions Asia 2017
  • 04/04/2017
    COnnected MAintenance using VIbration measurements
News
15/11/2018

Why wait to schedule your 2019 training programs ?

NEW this year !  Courses dedicated to Finite Element Model Updating, Railway Maintenance & Dynamics and also Noise from Gear Systems. The first sessions are at the end of January.

The specific web pages give the schedule for our Open programs held in France. We also organize all of our courses on demand on-site for clients worldwide who wish to train groups of employees together, focusing on their specific field / job.

Referenced as an official training center and registered on the DataDock platform to enable public funding for our course attendees (from French companies), VibraTec offers courses centered around industrial vibration, acoustics, signal processing and related fields targeting engineers and technicians.

Feel free to contact our training department for more information.

 

qualified professional training
05/11/2018

Jessica Neufond will represent VibraTec in Le Mans on 15-16 Nov at the Young Researchers’ Days in vibrations, Acoustics and Noise

She will present results of a study of the vibroacoustic behavior of planetary gears, from the determination of internal excitation to the vibration state of the housing.

The method developed reduces computation time (under an hour for a complete simulation) while using the real gearbox geometry.

This study focuses on planetary gear whining noise by determining internal excitation by simultaneously taking into account all meshings to include coupled interactions. The dynamic response is then calculated at any point in the housing via the resolution of the coupled equations of motion in the spectral domain and via an iterative process. Finally, experimental testing was performed to compare calculation and measurement results.

This is the subject of Jessica’s CIFRE thesis, in partnership with the Laboratory of Tribology and Systems Dynamics (LTDS, Ecole Centrale de Lyon) resulting from the common Ladage laboratory. VibraTec‘s expertise on the topic of gears is thus extended to the case of planetary gears.

Finite Element Model
08/10/2018

SIA CTTM Automotive NVH congress – Le Mans, October 17th & 18th, 2018

« Quietness mobility of the Future »

Exterior noise or interior acoustic comfort, Vibratec is on every field.

Concerning Pass-by-noise, Pascal Bouvet will show new methodologies, tools and practical solutions from the funded R&D project EcOBEx

Aurélien Cloix will present a common work with PSA on multi physics modelling for the integration of loudspeakers into automotive doors.

Plus many other subjects to share at the coffee break. Eager to see you there.

 

01/10/2018

Automotive Noise and Vibration Congress India 9-10 October 2018

Two technical papers will be delivered by our Head of Transport Department Dr Pascal BOUVET on the second day of the ANV Congress (10th October 2018). We invite you to join him at there and learn more on these topics!

Paper title: Noise radiated by electric motors: simulation process and overview of the optimization approaches. Session 6: Electric Vehicles, Time: 11:40-12:10

Paper title: Pass-by noise simulation and optimization of acoustic shielding package. Session 7: Vehicle Noise II, Time: 14:00-14:30

 

11/09/2018

CM 2018 in Delft, Netherlands: Rail joint dynamic forces computations, including rail plasticity

Vibratec will present a publication which is divided in two subjects:

  • Benchmark of 3D FE model compared to simplified model, to compute wheel-rail contact forces at rail joints: the objective is to validate the simplified approach in order to perform fast parametric variations
  • Computations of contact force including rail plasticity using 3D FEM: the objective is to assess the influence of plasticity on the contact force amplitude.

The subject started with SNCF, for which 3D FE models were developed to compute dynamic force for fatigue assessment.

VIBRATEC then decided to enhance the model by including rail plasticity (Chaboche model) and compared it to other numerical model, in collaboration with IFSTTAR, who developed the VOCO software which is used for parametric variations

31/08/2018

September 2018 International Railway Conference : ‘Rad-Schiene’ in Dresden

The French collaborative railway research project CERVIFER aims at accelerating Virtual Certification of Railway Systems. In this framework, computer models are used to compute the train-track interaction during the passage of switches.

From a geometrical description of a VOSSLOH switch and dynamic contact forces from measurements performed on an RATP commuter train, VIBRATEC built a multi-body model with the software VOCO, developed by IFSTTAR.

At the 16th International Railway Conference “Rad-Schiene” in Dresden, VIBRATEC specialist Martin Rissmann will present the difficulties and challenges of such models and the need of high quality measurement data.

23/08/2018

Dealing with gear noise of real industrial systems: an overview of the difficulties and the achievements

Alexandre CARBONELLI will present the philosophy of the research led by VibraTec in the gear dynamics field at the International Gear Conference in Lyon-Villeurbanne from August 27th to 29th.

 The presentation gives general feedback on the latest studies and on the position of a research engineer working in the gear dynamics field.

 Between academic science and the pragmatic constraints of the engineer’s job, it is important to have a strong expertise in order to work with the correct assumptions and the appropriate tools.

The close collaboration with the Laboratory of Tribology and System Dynamics (LTDS) of the Ecole Centrale de Lyon makes it possible to invest research efforts to answer real industrial concerns.

 

dynamic gear studies
14/08/2018

ShareLab – invite yourself to VibraTec !

Do you wonder about the vibration or acoustic behavior of your products and think that measurements would clarify things ?

VibraTec welcomes you to our lab and gives you free access to our sensors, data acquisition systems and facilities.

One day a month, you can set up shop at one of our test benches (with or without gantry crane) or in our semi-anechoic chamber and use our large stock of equipment (microphones, accelerometers, acoustic arrays, multi-channel analyzers, recorders, etc.) An in-house expert will be on hand to get you started.

Take advantage of this opportunity: schedule the date, then just come and install your equipment, do your testing and leave with results that you can analyze back in the office.

Sign up now: our dates this fall:

  • September 28th
  • October 26th
  • November 30th

sharing measurement equipment
31/07/2018

VibraTec – European partner for tomorrow’s cities

Horizon 2020, the European Research & Innovation Framework Program, plays an important role in local scientific and socio-economic development. Regional information sessions are organized in order to:

  • Motivate the various research and innovation actors with feedback from local experience from current Horizon 2020 participants.
  • Enable discussion and networking among these actors to facilitate the development of European projects.

VibraTec has participated in collaborative projects for more than 2 decades and is well-known in the Auvergne-Rhone-Alps R&D community. At a recent information session, our Scientific Director, Christian CLERC, presented one of our current European projects: MAVICO – COnnected MAintenance using VIbration measurements.

MAVICO uses dynamic response to monitor asset condition. Its original application is for tramways.

Using “expert” algorithms, the connected autonomous sensor can optimize maintenance and prevent incidents. Tomorrow, associated digital tweens will play an important role in managing both rolling stock and infrastructure lifetime.

More information on our railway activity herecontact us for other applications

17/07/2018

Acoustic design of Trains and Tracks

Proper acoustic design of rolling stock and track requires you to assign qualitative and quantitative targets to each piece of equipment, validate your choices, and identify problematic noise sources.

The railway experts of Vibratec can help you all along this process: from the characterization of acoustic sources and airborne and structure-borne transfer paths to the simulation and measurement of interior and exterior noise as well as ground borne vibration, troubleshooting, and optimization of equipment.

Using cutting edge simulation technology and measurement methods, Vibratec has accumulated an extensive experience working to the benefit of the world leading manufacturers and most significant projects.

Don’t hesitate to vist us at Innotrans, Hall 3-2, stand 301 C6 to see how we can help you.

06/04/2018

Come and meet VibraTec at TRA 2018

If you are interested in meeting VibraTec at TRA 2018 in Vienna on the 17th and 18th of April, Lucille LAMOTTE  will participate in the oral presentations and bilateral meetings organized in parallel by ETNA2020 Transport Networking and Brokerage Event focusing on the Horizon H2020 ‘Smart green and integrated Transport’ calls 2018-2020.

As an SME used to working on R&D projects on both national and international levels, we know the importance of finding the right partners for each project. ETNA is the perfect opportunity to broaden our network and increase visibility for potential European partners.

Transportation network
20/03/2018

Comprehensive innovative monitoring solutions to be presented at ACHEMA

Looking for a comprehensive, innovative solution to monitor your production process or characterize your products and raw materials?

VibraTec will participate in the ACHEMA trade show in Frankfurt from June 11th to 15th. We will present our SmartSolutions applied to a variety of industries and processes: energy, transportation, pumps, medical devices, test benches, safety and quality control.

Come and visit us to see how we can help you boost productivity and manage your assets the smart way!

Henri, Nicolas, and Katja will be waiting for you at booth A58, Hall 11.0.

SmartSolutions
14/03/2018

VibraTec very first railway seminar in Malaysia !

With over 30 years of involvement in the rail industry, VibraTec has a proven track record of experience and knowledge of physical phenomena on both rolling stock and infrastructures working with some of the world’s leading main line operators, urban operators, rolling stock manufacturers, equipment manufacturers and engineering companies at all stages of project development from concept and early design right through to commissioning.

In an attempt to make inroads into Asia, VibraTec is proud present its very first railway event in Malaysia this coming 26th March which will be held at Aloft Hotel Kuala Lumpur. Amongst many with a view to showcase some of its research and technological advancement made in Europe for clientele in Malaysia. This seminar will be delivered by Brice NELAIN, our Railway specialist from France. During the seminar we will discuss subject matters related to:

  • Track Studies and Maintenance
  • Ground Vibration Studies
  • Interior and Exterior Acoustics
  • Wheel Rail Interaction
  • Durability and Residual Life study

We are proud to announce that we have almost registered participants namely from Bombardier, MMC-Gamuda, Gamuda, Prasarana, Rapid Rail, Malaysia Rail Link, Scomi, Thales Group, Jacobs (CH2M), Consolis, Strand, Sepakat Setia Perundingan, MML Universal Testing & Engineering, PCE Engineering Services and etc.  

18/09/2017

Why wait to schedule your 2018 training programs ?

Referenced as an official training center and registered on the DataDock platform to enable public funding for our course attendees (from French companies), VibraTec offers courses centered around industrial vibration, acoustics, signal processing and related fields targeting engineers and technicians.

The 2018 catalogue gives the schedule for our Open programs given in France.

We also organize all of our courses on demand on-site for clients worldwide who wish to train groups of employees together, focusing on their specific field / job.

Feel free to contact our training department for more information.

18/07/2017

VibraTec’s training programs referenced by DataDock

VibraTec has been referenced as an official French training center for many years: we are now also registered on the DataDock platform, which centralizes information concerning French training centers to facilitate funding by “OPCA” (accredited fund-collecting / funding agencies), associations in charge of funding professional training throughout workers’ careers.

Yet another sign of VibraTec’s commitment to quality in all aspects of our activity.

04/07/2017

VibraTec – tackling railway measurement & simulation issues for more than 30 years !

VibraTec has been working in the railway field for more than 30 years and has capabilities in measurements and simulations. Two issues are growing inside the scientific community in the railway fields: maintenance with cost reduction at stake, and the environmental impact due to increasing demand in urban areas.

VibraTec is taking part in the state-of-the-art advance in these two subjects, and will present 3 papers at the upcoming ICRT Conference in ChengDu, China.

The first paper is related to maintenance. In a study performed for the SNCF (French national railway institution), a comprehensive finite element model has been set up to compute the time domain contact force due to a rail joint. Predicting the contact force will help to control the stress in the track and hence help to reduce maintenance. Both the difficulties encountered and the final results will be presented.

The two other papers are dedicated to ground-borne noise and vibration issues. First, a benchmark of soil-building numerical models has been performed with the CSTB (French national building institute of research) to compare and highlight the differences between a 2.5D FEM-BEM approach and a 3D FEM approach. Several application cases are developed to present the pros and cons of each model.

Secondly, VibraTec and Acouphen are presenting their practical methodology to characterize soil by measurements. Measurement quality is evaluated on-site by a step-by-step process. The excitation must be chosen according to preliminary results and adapted if necessary.

If you want to know more, join us in ChengDu from the 10th to 12th of July !

 

07/06/2017

Controlling joints to improve railway infrastructure reliability

This challenge was accepted by VibraTec, who’s Brice NELAIN will be publishing study results entitled “Computation of dynamic forces generated by rail joints” at the Railway Engineering Congress in Edinburgh from June 20th to 22nd. He will explain how Finite Element modelling simulation was used to analyze the impact of various rail geometries on rail and rolling stock wear.

01/06/2017

Dynamic response: a pertinent indication of structural mechanical reliability

Christian Clerc, VibraTec’s Scientific Director, will participate in a roundtable regarding “The importance of infrastructures: resilient, dynamic urban ecosystems serving connected mobility” during the « Revue annuelle des nouveaux usages consacrée à la mobilité » organized by the ANRT (National Association for Research & Technology) on June 15th in Bezos (Paris), France.

Anticipating failures, preventing passenger discomfort and noise pollution, optimizing maintenance at reduced cost are essential elements of railway infrastructure management.

  • Goal: take advantage of new IT and communication technologies to capitalize on 30 years of experience in acoustics and dynamics in the transportation field.
  • Digital technology contribution: vibratory and acoustic signatures provide information regarding the condition of both rolling stock and track and can therefore be analyzed to monitor wear and prevent failure. What used to require costly and fastidious measurement campaigns can now be integrated in an autonomous connected object thanks to new technology: MEMS captors, integrated processors & wireless communication.
  • Application: in the transportation field, on-board objects can be compact and intelligent, capable of measuring, analyzing and communicating in real-time the mechanical evolution of the structure or system to which they are applied. They will function on recovered vibration energy.
  • The railway application addressed by the MaViCo project aims to identify, localize and monitor various defects. The final product will serve to optimize mid-term maintenance (slow wear) as well as to prevent breakdowns (broken track, leaves/deposits on the track) and to avoid noise pollution (from screeching for instance).

03/05/2017

VibraTec Asia Pacific to be part of Rail Solutions Asia 2017

VibraTec Asia Pacific Project & Business Manager Ravindran KALIDAS will be presenting a paper addressing “Robustness and Reliability of Railway Equipment” at the Rail Solutions Asia Event in Kuala Lumpur on May 25th.

Railway equipment – both rolling stock & infrastructures – is subjected to high mechanical stress that must be integrated from the design stage. Standards have been established, but do not always guarantee reliability. This paper details the in-house methodologies (using calculation and testing) that provide more relevant input data for conception and use; realistic loads for models, realistic conditions for experimental validation, implementation of a loading database, feedback on the use of different materials and material residual life duration study results.

diagnosis expertise study
04/04/2017

COnnected MAintenance using VIbration measurements

MaViCO aims to develop a new generation of conditioned maintenance tool for the railway industry, using an energy-autonomous defect detector based on vibration analysis that will be capable of acquiring, processing and transmitting data in view of facilitating conditioned / predictive rail / rolling stock maintenance.

Mounted on the track, it will detect wear in specific sensitive zones of the infrastructure (switch and crossing area or transition area) and/or detect rolling stock defects (influence of the rolling stock). Mounted on the rolling stock, it will detect track wear defaults (corrugation, defective rail joints, squats, etc). 

This collaborative project, co-financed by the ADEME (French Environment & Energy Management Agency) and implicating the VapéRail and Kéolis companies as well as the LaMCoS (INSA Lyon) lab, started at the beginning of this year: the technical scope is currently being tuned to meet customer expectations.

ShareLab - invite yourself to VibraTec !

VibraTec welcomes you to our lab and gives you free access to our sensors, data acquisition systems and facilities.