Vibration Control Articles

74 Results found
  • Category: Health & Safety ×

  • Subcategory: Vibration Control ×

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 ...

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 ...

Measurement and bio–dynamic model development of seated human subjects exposed to low frequency vibration environment

by Inderscience Publishers  (Mar. 5, 2014)

In this study, the effect of posture, vibration magnitude and frequency on seat–to–head (STH) and back support–to–head (BTH) transfer functions has been studied under vertical sinusoidal vibration. Twelve healthy male subjects participated in experimental work to measure vertical vibration transmitted to the occupants' heads in three ...

Performance of damage detection algorithms for health monitoring of joints in steel frame structures using vibration–based techniques

by Inderscience Publishers  (Oct. 7, 2013)

Steel frame structures are widely used for industrial buildings, bridges, off–shore structures, etc., due to their high reliability and less construction time. In these types of structures, beams and columns are often connected by welding or fasteners forming rigid joints. In this study, viability of several damage detection algorithms for health ...

Monitoring vibrations, mechanical seals, and bearings for safety and performance

by ALLWEILER GmbH  (Sep. 9, 2013)

With more than 70 years of experience in plastics processing, Switzerland-based Quadrant Group is a leading expert in a wide range of polymer materials and technologies for polymer conversion. In order to maintain a high level of quality in the production process, Quadrant's heat-transfer pumps must work safely and reliably. These pumps are ...

Analytical and experimental study on bending vibration of internal combustion engines shafting system based on wave equations

by Inderscience Publishers  (Aug. 12, 2013)

This paper proposes a new analytical approach to study the bending vibration of N step shafting system. Changes of the shaft step properties under rotary condition are governed by two–dimensional wave equations. The source of the bending vibration is first analysed. Then strain and stress equations of the spinning shaft are established. After ...

Minor construction measures that influences vibration in concrete floors from foot steps and electric motors

by Inderscience Publishers  (Jul. 23, 2013)

Concrete floor constructions often suffer from high frequency vibrations. Humans aerobics workouts and various motors are sensitive to that kind of vibrations and it is of interest to find simple methods that reduce floor vibrations and thereby increase the comfort for habitants. Two steel framed concrete floors equipped with a vibration damping ...

Human emotional response to steering wheel vibration in automobiles

by Inderscience Publishers  (May 22, 2013)

This study investigates what form of correlation may exist between measures of the valence and the arousal dimensions of the human emotional response to steering wheel vibration and the vibration intensity metrics obtained by means of the unweighted and the frequency weighted root mean square (rms). A laboratory experiment was performed with 30 ...

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