12/01/2021

VibraTec proud to organize 1st LIVE-I public event in 2021

The LIVE-I project, short for Lightening and Innovating transmission for improving Vehicle Environmental Impacts, seeks to achieve breakthrough technological progress in the design of lightweight gear transmissions and to build an innovative training network. The consortium, coordinated by the Ecole Centrale de Lyon (France), is composed of 6 universities and 6 industrial partners, and includes institutions from European and non-European countries to build a strong and fruitful joint experience in cooperation and research.

The 1st event this year is a day dedicated to “Noise Vibration Harshness of gear transmissions”, organized by @VTC on January 25th. This training day, open to the public, offers the opportunity to better understand the physics that control noise and vibration of gears. Christian CLERC, Alexandre CARBONELLI, Jessica NEUFOND, Jean-Baptiste DUPONT, and Joël PERRET-LIAUDET (ECL) will share the floor throughout the day.

After a reminder of the theory and mechanisms that cause vibrations and sound radiation (from the contact forces between the teeth to the dynamic response of the casing), modeling tools and their use to solve industrial cases will be presented. Finally, recent developments on the simulation of complex gears and on the coupling with electric machines will be presented.

Knowledge of these phenomena is gaining importance with the development of hybrid and electric motor vehicles, but is also pertinent in other areas of industry.

Participants from both academia and industry are welcome. Maximum number is 50. Participation is free of charge: registration is mandatory before January 20th, 2021.

 

This project has received funding from the European Union’s Horizon 2020 research and innovation program under grant agreement No 860243.

LIVE-I is a

  • MSCA (Marie Skłodowska-Curie action)
  • ITN (Innovative Training Network)
  • EID (European Industrial doctorate)

LIVE-I H2020 Industrial doctorate
08/01/2021

VibraTec – designing pragmatic, innovative solutions

The ICTUS project (Instrumented engine Cradle for the TUrboprop demonstrator ground teSt) consisted in the design, manufacturing and qualification of the Tech-TP aircraft engine cradle. The project had four major objectives:

  • Design for flight and manufacture of the cradle supporting the engine and nacelle,
  • Provide a dedicated cradle instrumentation to manage loads, temperature and vibration,
  • Address the engine air flow environment,
  • Measure operational static & dynamic engine loads.

The ICTUS program has strongly contributed to the delivery of the first key demonstrator in Cleansky2 with the manufacturing of the cradle. The proposed instrumentation combined to the development of advanced test methods offers a major breakthrough to improve the exploitation of static engine test beds. It opens new ways to predict the engine interface within its aircraft environment for both engine and aircraft manufacturers.

More information here.

CleanSky2 Joint Undertaking      European flag

This project has received funding from the CleanSky 2 Joint Undertaking (JU) under grand agreement n° 785564. The EC receives support from the European Union’s Horizon 2020 research and innovation program and members of the EC CleanSky 2 other than the Union.

The JU Cleansky 2 is not responsible for any use that may be made of the information on this page.

ICTUS cradle model with engine
18/12/2020

FIV Webinar: all about Flow-Induced Vibration in piping

VibraTec is proud to host its second Webinar on Flow-Induced Vibration (FIV). Join us to know how to identify potentially critical lines regarding FIV throughout O&G facilities and how to reduce either the source of turbulence or the response of these critical lines. Our panel of Experts will discuss anything and everything related to FIV phenomenon including definition, sources, assessment, criteria and case studies with actual mitigation actions before finishing off this 1-hour webinar with an interactive Q&A session.

Day / Date: Tuesday January 19th 2021

Local time:
– 9:00-10:00 UTC+1 (Continental Europe)
– 12:00-13:00 UTC+4 (UAE)
– 16:00-17:00 UTC+8 (Malaysia)

Duration: 60-90 minutes

Register now

FIV piping vibration
24/11/2020

Registration for our 2021 training programs is open!

NEW this year: training courses 💯% ONLINE

To address the challenges of the current health situation, we have created 4 half-day modules:

  • the Fundamentals of acoustics,
  • the Fundamentals of vibration,
  • the Fundamentals of signal processing,
  • Implementing instrumentation.

It is also possible to consider an online format for most of our standard training courses.

Open sessions

We still organize open sessions at fixed dates. You can also train a group of employees in sessions that can take place anywhere in the world, on your premises or any suitable location.

Full-flex programs

All our training programs can be customized or combined on demand to target the specifics of your business, application or tools (hardware, software).

FNE-supported training

In these times of partial activity, the French FNE finances the implementation of training actions for French companies within a precise framework:

  • you are or have been on temporary part-time due to Covid,
  • you volunteer to take a training course during these hours,
  • the training is provided by a #datadock or #qualiopi referenced organization, – VibraTec is referenced DataDock 👍

Come to Ecully in January for:

Interested? Just contact our training department for further information. 😊

technical training
19/11/2020

VibraTec webinar: Acoustic-Induced Vibration

VIBRATEC is proud to host its own WEBINAR on Acoustic-Induced Vibration (AIV). Join us to know how to deal with AIV to avoid piping failures downstream of critical safety devices. Our Panel of Experts discuss everything and anything related to AIV phenomenon including definition, sources, assessment, criteria and case studies with actual mitigation actions applied before finishing off this 1-hour session with interactive Q&A session.

DAY/DATE

 WEDNESDAY, 9TH DECEMBER 2020

LOCAL TIME

 08:00AM – 09:00AM (UTC +1)  –    FRANCE

 11:00AM – 12:00PM (UTC +4)  –   UAE

 15:00PM – 16:00PM (UTC +8)  –     MALAYSIA

DURATION

 1 HOUR SESSION

Register here

10/11/2020

ATCx Automobile – November 19th 2020 : Acoustics of electric traction drives: from multiphysical simulation to multicriteria optimization

Virtual conference organized by Altair on the challenges of the automotive industry. Numerical simulation applications to deal with these challenges will be presented by major companies of the sector. VibraTec will be presenting on the day dedicated to e-mobility. 

Vibratec will present the benefits of  applying vibroacoustic optimization of the electric motors’ electromagnetic design using dedicated numerical methods, and the importance to consider the manufacturing tolerances in order to design silent and robust motors.

04/11/2020

“Business as usual” during lockdown

During this new lockdown period, all VibraTec Group employees are committed to accompanying you: you can count on us.

The staff of VibraTec SA, MicrodB and VibraTeam are mobilized. Working conditions are adapted to maintain our activity while protecting the health and safety of all.

The activity continues, both on-site and in homeoffice:

  • We continue to perform on-site missions (respecting sanitary measures).
  • Ongoing projects and studies continue normally.
  • We remain available and attentive to your needs.

homeoffice
08/06/2020

VibraTec offers a technical course in the form of 5 webinars on electric motor + gearbox sub-assemblies (E-powertrain, electric actuators, gear drives, etc) (given in French with English presentations).

Webinar n°1: Introduction and challenges (June 16th 11h30-12h)

This webinar will present:

  • NVH issues associated with E-powertrains and other electric motor + gearbox sub-assemblies,
  • Possible approaches in the design phase (technical aspects and integration of NVH in the design process).
  • A state-of-the-art of existing tools and methods to control the NVH performance of E-Powertrains and other electric motor + gearbox sub-assemblies.

 

Webinar n°2: Electric machines (June 24th 14h-15h)

This webinar will detail the physical phenomena that make an electric machine a source of noise and vibration, from magnetic excitations to the vibration and noise generated by machines and their modal behavior. At each step of the process, important points will be highlighted and key indicators will be given.

 

Webinar n°3: Gearboxes and Gear Drives (June 25th 14h-15h)

This webinar will analyze the physical phenomena that make a gear transmission a source of noise and vibration, from the excitations to the vibration and noise generated by the gearbox to the dynamic phenomena of excitation amplification. Orders of magnitude will be indicated and the main technical nodes will be detailed for each step of the process.

 

Webinar n°4: Optimum multi-stress design (July 1st, 14h-15h)

This webinar will present the latest methods we use to very significantly reduce E-Powertrains excitations: sound power, forces transmitted to the receiving structure and torque pulsations. The overall approach based on optimization algorithms will be presented and then applied to gear systems and electric motors. A few industrial examples will illustrate the gains obtained with these methods.

 

Webinar n°5: Integration in the final application (July 2nd, 14h-15h)

The successful acoustic integration of an “electric motor + gearbox” assembly in its final application: our last webinar will address this topic, by recalling the principles of solid-state transfer and aerial transfer, with specificities related to E-Powertrains. The numerical tools and experimental methods used will also be presented.

 

Speakers :

 Sylvestre LECURU, Head of Auto Business Unit
At VibraTec since 2007

 Alexandre CARBONELLI, PhD, Expert in Gears
at VibraTec since 2012

 Jean-Luc WOJTOWICKI, Project Manager
at VibraTec since 2011

 

Electrified subassembly webinars
26/05/2020

Resuming in-place operations

After two months of working from home, the premises of VibraTec, MicrodB, and VibraTeam are open again. A majority of the staff continues to telecommute, but the use of our laboratory is once again possible and we are also able to perform on-site missions for our clients.

Precautions are taken from arrival in the building, to guarantee working conditions that respect the safe work practices that are essential for everyone’s health.

measurement operations possible
15/04/2020

FATIGUE is an important criterion in your activities, but this subject raises questions?

Do you qualify your products by endurance tests?

Your products are subjected to mechanical loads under vibratory environment and you want to know the impact on their lifetime?

You wish to build a customized test equivalent to the lifetime of your future product?

You will find the answers to your questions in the two themes of our Fatigue webinar (given in French):

  1. Building a Iso-damage Fatigue Test Specification – Wednesday, April 29th from 2 to 3pm
  2. The contribution of digital technology in fatigue design – Thursday, April 30 from 2 to 3 pm

During these sessions, we will address your questions, regardless of your sector of activity:

  • How to determine mechanical loads under a vibratory environment?
  • How to build a severe iso-damage test?
  • How to set up a fatigue analysis method?
  • How to ensure its endurance tests in the design phase with simulation?

Our specialist on the subject, Anne COULON (more than 10 years of experience at VibraTec),  will present a methodology, concrete examples and will of course answer your questions.

Sign up now:

vibration fatigue breakage
01/04/2020

Optimizing E-Powertrain acoustic treatment

The ability to rank E-powertrain components in terms of acoustic power is essential to E-powertrain design. A useful second step is to evaluate acoustic treatment effectiveness.

VibraTec has built a test bench to address these needs, especially for MHEV components up to 45 kW. Several microphone arrays are used to measure acoustic maps of the powertrain installed on the bench. Within 2 weeks, the components responsible for the majority of the acoustic power are identified; 7 configurations are tested and ranked in terms of effectiveness.

No need for an anechoic chamber; this acoustic power measurement based on MicrodB’s (VibraTec subsidiairy) innovative methods can be implemented in most test bench facilities.

More information, training programs and expert consultation here.

 

MHEV test bench
17/03/2020

VibraTec – working from home

In anticipation of government directives, the offices of VibraTec SA, MicrodB and VibraTeam in Ecully were closed as of last night.

All employees, whether they have administrative, commercial or technical functions, have the equipment and access to work from home and ensure business continuity. They are at your disposal to deal with your questions. Thank you for your understanding.

homeoffice
13/02/2020

Gain computation time with VibraTec’s digital planetary gear model

This dynamic model of a complete planetary gear train, from the characterization of internal excitation to the vibratory state of the system at a stabilized regime, makes it possible to take account of the flexibility of the various components (shaft, bearing, wheel body, etc) with very short computation times. VibraTec’s know-how in digital model validation with real-life testing is highlighted; transmission error and housing vibrations were measured on two planetary gears with differing tooth profiles.

Static input/output transmission errors measured on planetary gears will be presented, accompanied by the housing’s vibration levels for various running regimes. These results are compared to digital model predictions developed during Jessica Neufond’s doctoral thesis [1].

The dynamic model has several advantages compared to those from literature: a complete 3-dimensional finite element model, an iterative spectral method reducing computation time to a minute per stationary regime, inclusion of coupled and simultaneous interactions between contact conditions for each meshing with a micro-geometric description of the gearing, and finally, validation by computation/measurement comparison.

These results, achieved through collaboration in the Ladage (VibraTec and the LTDS, Ecole Centrale de Lyon), will be presented on February 17th 2020 at the upcoming  Euro-Mediterranean Conference on Structural Dynamics & Vibroacoustics in Naples.

Contact us for more information.

[1] J.Neufond, E. Denimal, E. Rigaud, J.Perret-Liaudet, A.Carbonelli, Whining noise computation of a planetary gear set induced by the multi-mesh excitations. Proc. Inst. Mech. Eng. C, 2019

gear computation method validation
06/02/2020

E-powertrain training program – increasing understanding of electric vehicles

Technology is continuously evolving: VibraTec aims to remain a pertinent partner for your technical training.

This is why we have created the “Vehicle E-powertrain Integration” training session. Two days to understand E-powertrain dynamic behavior, NVH specificities & learn how to build and interpret NVH specifications and lead E-powertrain integration projects.

Our sessions will make it possible to have a better grasp on the impact of E-powertrains on vehicle accoustics, and enable trainees to combine their basic knowledge of structural acoustic radiation, structural dynamics and automotive design in order to successfully integrate E-powertrains in vehicles.

📌  The first session is scheduled on 26-27 May: registration is open !

E-powertrain training
29/01/2020

Trainee satisfaction in 2019

At VibraTec, our clients’ opinions are important for the evolution of our diverse activities, to guarantee that we stay in touch with client needs.

Our 106 external trainees gave us a score of 8.8/10 for our 2019 training programs. The score reached 9/10 for all 152 people trained throughout the year.

What was appreciated? Our dynamic staff, attentive to specific needs and able to meet them, adapting as required.

What should be improved? The duration of our programs.

Our 2020 sessions will take this into account, aiming to increase trainee satisfaction without sacrificing key program content.

Many thanks to our training team, whose work has been recognized and appreciated. We also thank all those who trust us for their training, and whom we hope to see again in 2020.

trainee-satisfaction
21/11/2019

Why wait to schedule your 2020 training programs?

NEW this year!  Vehicle E-Powertrain Integration. Two days to understand E-powertrain NVH specificities and lead an E-powertrain integration project.

The first sessions in 2020 are in January: three topics will be addressed:

Specific web pages give the schedule for our Open programs given at our Headquarters 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 since 1989 and registered on the French “DataDock”, VibraTec offers courses centered on industrial vibration, acoustics, reliability, signal processing and related fields targeting engineers and technicians.

Feel free to contact our training department for more information.

professional technical training
14/11/2019

Extend asset service life thanks to VibraTec’s expertise in fatigue analysis and approach to evaluate remaining life

Remaining life provides visibility of the structure’s future life to anticipate difficulties and guarantee long-term quality of service. Analysis of this parameter is an important part of asset management for structures designed to last for decades, like railway transportation networks.

In this specific case, the method quantitatively assesses the remaining life of railway network car bodies. Operation and maintenance road maps serve as guides to reach service life objectives.

Structural modification can also be evaluated to optimize life duration, providing support for investment teams, helping them optimize their asset management strategy.

service life extension
07/11/2019

Quality control is of utmost importance to industrialists

VibraTec is able to assist clients with completely adapted and bespoke solutions.

VibraTec and Aptiv recently worked together to develop a contact force test rig to validate product quality on the production line.

And it’s a success !

production quality control
11/10/2019

Converting data into information to improve structural diagnosis

A step back on how to best use the wide variety of Machine Learning tools and data processing in predictive maintenance applications.

The aim is to present a flexible methodology that can be generalized to predictive maintenance problems. How to adapt raw signal pre-processing according to objectives ?

The outcome of this work comes from the diverse projects carried out at VibraTec. With the current massive development of these technologies, it is important to select and master those that are most appropriate.

“Science without conscience is but the ruin of the soul”. Anyone can use Machine Learning; it is important to understand its potential and limitations to do so properly.

International conference on gears 2019 (VDI Munich)

Contact: Alexandre Carbonelli

 

image LdN
05/09/2019

Experimental validation of numeric planetary gear set behavior

The numerical model developed during Jessica NEUFOND’s thesis on the dynamic behavior of planetary gears has been validated by a campaign measuring a variety of planetary gears presenting a large number of tooth profile modifications. From the characterization of static transmission error to the vibratory state of the housing, the experimental data were compared to the numerical results from a dynamic model, validating the developed model.

These results, achieved through collaboration in the Ladage (VibraTec and the LTDSEcole Centrale de Lyon), will be presented at the upcoming International Conference on Gears in Munich.

Contact us for more information.

planetary gear testbench
20/08/2019

Acoustic transparency of Alberich coatings under high water pressure: coupled simulation method

This innovative simulation method estimates the acoustic behavior of elastomeric coatings taking into account the influence of temperature and pressure conditions. The implemented procedure is based on the coupling between a nonlinear static simulation (taking into account the hyperelastic nature of the involved materials) and a linear acoustic simulation (taking into account the viscoelasticity of the materials).

This type of method is used for optimizing underwater coatings; VibraTec is an innovative player in the field.

The method is applicable to estimate the acoustic performance of any system incorporating elastomers under stress (seals, absorbent coatings, etc).

For more information

acoustic transparency FEM
25/06/2019

Bearing and gear fault detection using Machine Learning

Maintenance services are beginning to use conditioned-based maintenance with vibration sensors. New methods in signal post-processing are being coupled with Machine Learning (ML) algorithms.

The method proposed by VibraTec is to add a qualitative analysis in case of fault detection (bearing or gear faults, etc.)

This new step helps maintenance services to focus more efficiently on the faulty part of the system, inducing more rapid repair. This involves less downtime, leading to significant gains in productivity.

This research work was developed for maintenance services, in order to increase the efficiency, maintenance scheduling, and organization.

The work, focusing on the railway sector, was developed in the scope of the Run2Rail project (Shift2Rail). However, it can be applied to any industrial sector (aeronautics, automotive, etc.).

17/06/2019

Annual Meeting : French Mechanics Association Rotating Equipment Committee

VibraTec is working on a new approach to early gear fault detection. This vibration monitoring method detects, locates and characterizes the evolution & criticality of bearing and tooth faults. Large quantities of data are collected; classification is performed with AI algorithms.

Renaud BERTONI presented this method on June 4th at the annual French Mechanics Association Rotating Equipment Committee meeting at Honeywell-Garrett France’s headquarters in the Vosges. This committee, composed of academia and industrial partners, meets once a year to discuss scientific & technological issues pertaining to rotating equipment (digital and experimental aspects). Meetings are also the occasion to visit industrial installa

VibraTec is a longtime member and acting secretary, sharing its technical developments relating to rotating equipment.

21/05/2019

European Test and Telemetry Conference (ETTC 2019)

A new vision for the MRO market

VibraTec will attend the next ETTC 2019 conference, on June 11-13th 2019 in Toulouse, France.

Renaud Bertoni and Lionel Duvermy will introduce a new approach for gear and bearing fault detection.

VibraTec develops a prognostic process to monitor the mechanical behavior of the driving chain.

Applied on a dedicated Health Monitoring Systems (HMS) test bench, a review of the methodology is proposed, from instrumentation to the classification using Machine Learning process.

19/03/2019

There are no passengers on spaceship earth.

The VibraTec Group guides its clients toward eco-friendly solutions whenever possible, and also encourages the use of public transportation, cycling and carpooling among its employees.

In this context, AirFrance’s CO2Zero program supporting CO2OL provided us a good way to compensate our air travel carbon footprint by helping to reforest the Panama Canal Zone. To date, over 7.5 million trees have been planted, 15 endangered species have a new habitat and 150 jobs have been created.

green carbon footprint
11/12/2018

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:

  • February 1st
  • March 1st
  • March 29th

sharing measurement equipment
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
29/05/2018

Customized asset management and monitoring solutions: learn about at Achema, from 11th to 15th of June 2018

Surveillance or maintenance: ignorance is bliss?

Do not stay in the dark! Have better nights: discover our Smart Solutions to plan your maintenance and ensure the quality of your activity.

To find out more, come see us at the ACHEMA trade show in Frankfurt, 11th to 15th of June 2018, hall 11.0 booth A58. We will answer your questions, especially in the production, process and energy industries.

If you want free invitation, contact us.

09/05/2018

VibraTec at the ENOVA Toulouse event on the 30th and 31st of May 2018

Come and meet us on booth B10 and discuss your needs for optimizing the design of your equipment in noise, vibration, and reliability. We will also present innovative instrumentation solutions, embedded or not, for the diagnosis and control of the life cycle of your products. Among the presented solutions: the SoundCam solution developed by our subsidiary MicrodB to perform a rapid acoustic diagnosis of a complex mechanical system; and an original solution for diagnosing the components of a transmission chain.

17/04/2018

Ignorance is bliss ?

Why would you monitor your production line, when it’s so much simpler to just wait for it to break down and bring your entire activity to a full stop?

If “Ignorance is bliss” isn’t your motto, if you sleep better with your maintenance well-scheduled and a rigorous quality control, you may be interested by our Smart Solutions.

Combining multi-physics sensing with state of the art modelling and Digital Twin technology, VibraTec offers customized asset management and monitoring solutions independent of any specific hardware or software.

To learn more, come and see us at ACHEMA in Frankfurt, Germany, from 11th to 15th of June 2018, hall 11.0 booth A58, where we can introduce you to our experience with the manufacturing, process, and energy industry.

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
13/03/2018

Innovate with VibraTec ! We will be at the Smart Industries event during the Global Industrie fair in Paris from 27 to 30 March

VibraTec was chosen to represent the Auvergne-Rhone-Alpes region as an SME with innovative products & services (predictive maintenance, innovative sensors, digital twins, etc).

Agnès Gerphagnon and Lucille Lamotte will present the group’s latest innovations, including the LMS SoundCamera developed by MicrodB and our predictive maintenance SmartSolutions connected, autonomous sensors.

The Global Industrie fair focuses on the Industry of the Future and brings together stakeholders from the entire manufacturing ecosystem and all industry sectors. It is backed by President Macron, the French government and the Industry of the Future Alliance (AIF). From March 27th to the 30th, almost 3 thousand exhibitors will welcome over 50 thousand visitors.

connected sensors
10/10/2017

VibraTec participates at JAAN on the 26th and 27th of October 2017 in Toulon

VibraTec contribution to JAAN 2017 (Ollioules, France, 26th and 27th of October 2017): « Acoustic transparency of Alberich coatings under high water pressure: coupled simulation methodology »

VibraTec will present a coupled simulation methodology for the estimation of the acoustic transparency (as well as reflection) of rubber coatings with periodic air inclusions (as Alberich coatings) under high water pressure. These panels are made for being implemented on underwater structures. Many challenges must be addressed: the large strain of the coating under static water pressure, the highly non-linear behavior of the hyperviscolastic material, the influence of the static deformation on the acoustic behavior. The possibilities offered by this method are of utmost interest: optimizing the design of the coating and the properties of the material to improve the acoustic performance of the coating under given pressure and temperature conditions.

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.

07/09/2017

VibraTec will be at SERMA’s Technology Days on September 21st and 22nd near Bordeaux

VibraTec and Serma will present the fruit of their collaboration regarding the reliability of mechatronic equipment. Very different, electronic and mechanical reliability are rarely studied together. The work carried out by VibraTec and Serma aimed to couple the two approaches in order to produce reliable mechatronic equipment. The resistance/stress reliability approach and specific mechatronic applications will be presented.

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.

15/06/2017

We will be at the 8th VDI conference on wind turbine vibration in Bremen/Germany on June 27th-28th, 2017

VibraTec will be at the 8th VDI conference on wind turbine vibration in Bremen on June 27th-28th, 2017. We will present our expertise on experimental and numerical vibratory diagnosis techniques in this context.

 After a wind turbine was retrofitted with a new generator, much higher noise levels recorded at the foot of the tower raised concerns about its reliability. VibraTec was called to perform a thorough on-site diagnosis to determine the origin of the noise and assess the risks on the fatigue behavior of the structure. To take all possible vibration sources into account, a multi-physics approach was applied, covering electromagnetic excitation, torque pulsation, cogging torque, unbalance and bearing condition. Advanced experimental techniques such as simultaneous recording of sound pressure, current signals and accelerations were applied to assess the vibrational behavior of the wind turbine.

The results of the diagnosis gave conclusive arguments on the safety of the operation in the new conditions.

 

12/05/2017

Presentation of a publication at Surveillance 9 Conference in Fes, Morocco, May 22nd to 24th, 2017

The noise from “Root” type vacuum pumps is a major disadvantage to wider use. The noise sources and the mechanisms involved in these pumps are complex, strongly coupled and their modeling is delicate (3D fluid calculations in a cavity of changing geometry, coupled with a nonlinear meshing dynamic).

The collaborative project FUI ARPE (Acoustics and vibration of vacuum pumps) aims to significantly improve the multi-physical modeling of these pumps. In this context, a measurement campaign was set up, on the one hand, to recalibrate the models and, on the other hand, to establish a vibro-acoustic diagnosis of the pumps.

VibraTec will be at the Surveillance 9 Conference in Fes, Morocco, from May 22nd to 24th May, 2017, to present the measurements performed and their uses (shock detection, psycho acoustic criteria, etc.)

VibraTec has been approved for French Innovation Tax Credit for 2021. This recognizes our ability to carry out innovative design work for clients.