Simultaneous measurement of the vibration levels of the hydraulic steering pump and its supports on the outside of the vehicle, and the sound pressure at various points both inside and outside. From this point on, diagnose the causes of noise transmission from source to receiver and propose the most optimal solutions.

In order to reduce the noise generated during the movement of one of the trailers by transporting cargo containers, the trailer noise is measured by moving at appropriate distances with both full and empty containers. Based on the results, the causes of the problem noise are determined and the correction is designed.

Assessment of the contributions of the different subsystems of the CH-150 model to the noise received in the driver’s position and at an external point, with the objective of determining the modifications necessary to the vehicle in order to reduce the sound pressure level received at these two points. Carrying out measurements with the vehicle stationary according to the TPA methodology to know how much noise comes directly from the holes and what part comes from the vibration of the structure.

Determination of the vibration power transmitted from the engine to the vehicle bodywork CH-150 of AUSA, through its different connection points. Evaluation of the power transmitted by the main motor-body connection points using the Mobility and Source Descriptor Method, allowing to find some solution that reduces the current vibration level.

Development of a computer application made in Matlab language, so that from the data supplied by the user can make calculations for the characterization of their gear changes and representation of the results obtained. Complete characterization of a gearshift system that allows to establish the necessary modifications to achieve the vibro-acoustic requirements that the client establishes for these mechanisms.

Measurement of sound pressure at different points and under controlled operating conditions of the Ferrari 456 model. Application of the methodology of Investing models in order to know the noise level of each of the surfaces of the cabin in order to be able to treat it and, at the same time, predict the improvement obtained with the modifications made.

Elaboration of a vibratory prediction model using finite elements (FEM) to determine the vibratory level produced on the turbine support of the plant due to the passing of the AVE in its vicinity.

Evaluation of vibrations in the works of the Alba Synchrotron. This monitoring consists of carrying out various measurements with and without activity on site, controlling the vibrations caused by the operation of the bridge crane that passes through the entire construction, and characterizing the vibratory levels of a slab.

The Vitraso project aims to detect the most harmful noise and vibration transmission pathways in a building, as well as the subsequent design and implementation on site to bypass these pathways. Using transmission pathway analysis methods, it will be possible to identify the pathways with the best contribution and will facilitate localized intervention in the elements that make them up. The results obtained by these methods will be compared with the experimental measurements and numerical simulations. In addition, the contribution of the different transmission routes will make it possible to evaluate the limitations of prediction in accordance with the UNE EN ISO 12354 standard.

In this complex study, several tasks have been carried out: measurement of vibrations in the field, evaluation and prediction of vibrations over the critical area, calculation of vibration isolation in this critical area, acoustically analysis of machinery and installations to comply with the regulations, control of noise and vibration in auxiliary equipment, prediction of vibrations caused by the crane bridge, and calculation of insulation of the 1m thick slab.

Advice on construction design to meet vibration criteria. Recruitment file nº 903/04.  CSIC-CNM and Master of Engineering S. A. Evaluation of the current loads to quantify the required insulating means and to quantify the permissible external disturbance limits. Follow-up of the execution of the anti-vibration bed constructed in the works. All this with the purpose of obtaining a correct execution and to verify at the end of this one that the solution reports the suitable vibratory behavior.

Measurements are carried out on two windows of the building to determine the noise transmission routes from the outside of the building to the inside of the dwellings through the windows.

The aim of this study is to determine the vibration levels that future expansion works of the IBM Data Processing Center in San Fernando – Madrid will produce in the same. The study consists of different phases: Carrying out a series of acceleration measurements to obtain direct vibration transfers between different subsystems of a given sector of the centre. Elaboration of a finite element model of a part of the building. This model makes it possible to calculate vibration transfers between the farthest sectors of the building, and to study in more detail the range of low frequencies, which are difficult to excite experimentally. Measurement of the vibration produced by a robot-hammer to calculate the predictable vibration level in two areas of the building. Determine whether the expected vibration values can alter the correct operation of the centre.

Personalized course according to the client’s needs. The syllabus of the course, prepared by ICR, is based on the calculation forecast of the acoustic impact of a wind farm consisting of three parts: an introduction to acoustics, an environmental impact study due to the installation of a wind farm and practical examples.

To determine experimentally, based on an experimental modal analysis, the vibration modes of the wind turbine frame structure, as well as the possible local modes of some of its components, in order to compare them with those calculated and to know the dynamic behavior of the frame.

Study to evaluate the acoustic impact by means of two phases: carrying out acoustic measurements at the site and a posteriori, proposal of solutions.

Carrying out sonometric measurements and drawing up a Noise Transmission Pathways Analysis (TPA) to quantify how much noise is emitted directly from each of the mouths (aspiration and expulsion) and when noise is emitted for the structure of the wind turbine.

Development of a numerical model of airborne noise and acoustic forecasting to determine the future compliance of the new units in accordance with TSI Rolling Stock-Noise 2006/66/EC, UK regulations and customer requirements. Performing protocol and post-process measurements: measurement of RASTI according to IEC60268-16 standards and measurements of internal, external and cabin noise both aerial and structural.

Predict structural noise levels within a realistic range of uncertainties. Given a maximum SPL, specify the maximum vibration levels measured under certain conditions. Based on an experimental measure (results from numerical models are also considered).

Execution of static and dynamic vibroacoustic measurements in the high-speed train to process, according to TPA methodology, each of the noise and vibration sources of the train and its contribution to total noise.

Realization of a software for treatment, frequency analysis and visualization of bridge vibration signals. Main functions: synthesis and application of all types of digital filters, polynomial or spline-based interpolations, signal resampling, conversion of data formats, project mode management of all signals, determination of the main frequencies and associated damping, calculation of residual and stabilized values, etc. The software includes massive data processing and customized summary report generation subprograms.

Development of an Experimental Modal Analysis to know the different real modes that exist and participate in the movement of the assembly that form the support frame elastically joined to the car, the powertrain assembly, and the turbocharger assembly that the engine has attached.

Elaboration of an acoustic study of aerodynamics generated by noise and excitation of mechanisms in the new high-speed train. The study is divided into three main parts: cabin noise due to aerodynamic glass excitation, cabin noise due to the ventilation system and finally, noise in the passenger area behind the cabin.

Design of silencing elements needed to reduce the noise level generated by the stale air extraction system located in a drawer under the seat of the Rome Metro. Carrying out an acoustic study of three different door designs carried out with the multiple insulation calculation program, dBKAisla developed by ICR, in order to compare its acoustic insulation.

Acoustic Study of Diesel units for N. I. R. based on calculation of rolling noise, noise levels and determination of solutions to reduce train vibrations caused by the auxiliary engine. Description of the results of the model carried out in order to evaluate the predictions of the sound pressure level inside NIR diesel trains.

Carrying out vibro-acoustic tests on a similar train including an analysis of the train’s noise and vibration transmission pathways and measurements of equipment and components. A
lateri, realization of a numerical Model in order to predict the noise and vibrations of the new one.
Xin Mine Line model train. Monitoring of the manufacture of the first unit of the new model and vibro-acoustic test to check the estimated prediction. Redesign of the cabin doors and intercommunication train.

Acoustic study to define an audio emitting equipment that can guarantee the most optimal listening conditions without creating annoyance to the rest of those present. Carried out by means of an analysis of the current system characterizing the performance of the emission system in terms of directivity: frequency response, and consequently evaluating the intelligibility indicators adapted to the application.

ICR has advised the client during the design process by proposing acoustic improvements and suggesting alternative prototypes. The aim has been to condition the engine to reduce the level of noise emitted and annoying tones to the ear.

To reduce the noise produced by a pump incorporated in a clinical analysis machine, the first step has been to perform various acoustic and vibratory measurements to characterize the acoustic source, as well as to determine the structural and acoustic transmission pathways of noise. Design of the correcting solution to the problem.

Carrying out acoustic characterization measurements (acoustic impedance and absorption coefficient) of different materials of the company Texsa, S. A., based on the specifications given by the UNE-EN ISO 10534-2 standard for measurements with Kundt tube according to the method of the transfer functions.

Analysis of the Transmission Pathways of one of the “hoist” equipment manufactured by Industrias Electromecánicas GH in order to quantify each of the noise and vibration sources that compose it and thus be able to determine the optimal process for reducing the level of noise generated by the whole assembly. A posteriori, proposed modifications to reduce the final noise received.

Acoustic measurements and study according to the TPA methodology carried out on an automatic door for elevator in order to diagnose the origin of the noise of the same, and at the same time, quantify the contribution to the total provident noise of each part of the elevator. Proposal of solutions.

Based on the measurements made by the customer, ICR analyses the bridge vibrations under real operating conditions using operational modal analysis techniques, thus obtaining a much more valuable model.

Software for the processing, analysis and visualization of bridge vibration signals, which allows the modification and analysis of the measured signals during bridge loading tests, and automatically generates customized reports afterwards.

To study, with receiver points, all those areas and/or buildings in the vicinity of the viaduct that are sensitive to noise levels produced by the different trains, with the aim of making an acoustic forecast that contemplates compliance with the provisions of the DIA regulation formulated by the corresponding informative study of the “Project for the new railway network in the Basque Country” by the General Secretariat for the Environment through the resolution of 22 October 2000 (B).E. O. No. 226 of 6 November 2000).

Control for a total period of 36 months the vibration levels received at two different points of the works. Evaluation, in each of the points, of compliance with current regulations and weekly and quarterly presentation of a detailed report of incidents produced during said period.

Evaluate the noise impact produced by the company Funosa in its surroundings from some measures carried out by the LGAI, to know the situation of the company and its surroundings with respect to the standard ordinance of the Department of Environment in anticipation of future practical application by the Town Council of Igualada. Carrying out a complete study to know the acoustic power values of each noise source, in order to design the most optimal acoustic solutions to reduce the sound pressure level in the receiver points.

Study for the reduction of noise levels generated by traffic in a section of the Ronda de Dalt de Barcelona of approximately 300 meters long. Phases of the study: noise diagnosis, elaboration of an acoustic model and proposal of solutions of acoustic barriers.

Measurement of the sound pressure level in the vicinity of the factory and at several control points in the areas most likely to be affected. Application of the Reverse-model method to determine the acoustic power of external noise emitters at the AGA production plant in Toulouse.