Vibration Control Articles

154 Results found
  • Category: Health & Safety ×

  • Subcategory: Vibration Control ×

Airbus Helicopters: Monitoring gearboxes with HUMS accelerometers case study

by Brüel & Kjær Sound & Vibration Measurement A/S  (Mar. 27, 2015)

Airbus Helicopters needed highly robust, flight-certified accelerometers for permanent monitoring of gearboxes to be quickly designed and delivered. Challenge For helicopters, one of the most dangerous possible scenarios – worse than engine failure – is gearbox failure. Quality vibration monitoring is needed to ensure gearbox health ...

Music Studio Application in Belgium - Case Study

by ALPHA ACOUSTIKI Ltd.  (Feb. 19, 2015)

Following our recent expansion to the Belgian and Dutch market announced in June 2014 and collaboration with Company Ideal Acoustics our first prestigious project was recently delivered. Our first project was a prestigious music studio applications in Brussels, Belgium. The music studio was constructed  using the "room ...

Fred Hartman Bridge - Harris County, Texas case study

by Pure Technologies  (Nov. 18, 2014)

Service: SoundPrint - Bridges Client: Texas Department of Transportation (TxDOT) Project Date: 2002 Type of Bridge: Fan arranged cable-stayed bridge Length: 4.185 kilometres (2.60 mi) The Fred Hartman Bridge was opened to traffic in 1995 and is one of the largest cable stayed bridges in the United States. The cable stayed bridge portion ...

Modelling and control of four and six DOF active engine mount system using (PID and LQR)

by Inderscience Publishers  (Nov. 3, 2014)

In this paper, classical and modern controllers have been introduced on three different engine models starting form a moderately realistic four degree of freedom model and then a realistic six degree of freedom model, two control techniques were implemented on the different systems namely proportional integral derivative (PID) and linear quadratic ...

Vibratec`s Continuous Efforts in Reducing Noise and Vibration

by Vibratec Asia Pacific Sdn Bhd  (Sep. 23, 2014)

As the well-known leader in the noise and vibration field, Vibratec has been working in improving the vibration level in electric vehicles with ADETEL Group and CEDRAT to commercialize a serie of vehicle from RENAULT. Vibratec has a level of technology that is better than the other key players of German's automobile industry, however, this ...

Industrial Noise and Vibration: High-speed balancing - Case Study

by Sulzer Ltd  (Sep. 19, 2014)

Dynamic balancing of rotating elements is an important aspect of the manufacture and the repair of any turbomachinery. A rotating element that is out of balance can cause major operational difficulties, which may prevent the timely start-up of a facility. Furthermore, the unbalanced element can cause internal damage that will rob a machine of its ...

Random vibration Monte Carlo simulation using multiple harmonic function schemes

by Inderscience Publishers  (Aug. 12, 2014)

The reliability study of structures under random vibration involves the performance of Monte Carlo simulation in time domain. One important part of such analyses is the generation of load time histories that must accurately represent the characteristics of the stochastic loads. There are several methods to generate time histories from a power ...

Raman imaging at biological interfaces: applications in breast cancer diagnosis

by AcuTech Scientific Inc.  (Aug. 8, 2014)

Abstract Background: One of the most important areas of Raman medical diagnostics is identification and characterization of cancerous and noncancerous tissues. The methods based on Raman scattering has shown significant potential for probing human breast tissue to provide valuable information for early diagnosis of breast cancer. A vibrational ...

A combined technique for rotor broken bar diagnosis in VSD equipped with vibration reducers

by Inderscience Publishers  (May 29, 2014)

Broken rotor bar is a common fault in squirrel cage induction motors. Rotor failures due to that fault now account for a moderate percentage of total induction motor failures. This paper will deal with detection of broken rotor bar of induction motor supplied from variable speed drive (VSD) equipped with AC reactor and sine–wave shaping filter on ...

Bearing fault severity estimation using time–based descriptors for rotating electric machines

by Inderscience Publishers  (May 29, 2014)

This paper evaluates the bearing fault severity in rotating electric machines based on the time–based descriptors derived from machine vibration signal. Time–based descriptors are independent of bearing dimensions and machine dynamics. To establish the relationship between the time–based descriptor and bearing fault severity, a wide range of ...

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