Vibration Control Articles

49 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 ...

Identification of quality attributes of automotive idle sounds and whole–body vibrations

by Inderscience Publishers  (May 22, 2013)

The aims of this study are the generation and comparison of the semantic spaces of vehicle idling sounds and vibrations and the determination of their quality dimensions. In this study, two different sets of quality attributes were developed for idling sounds (34 attributes) and whole–body vibrations (22 attributes). In contrast to prior ...

Damage identification based on vibration data

by Inderscience Publishers  (May 2, 2013)

Structural damage identification, localisation and quantification is receiving attention world over. Developments in sensor technology, modal testing brought out immense technical advancements in modal–based damage detection methods. Advances in modal–based damage detection methods over the last few decades produced new techniques for examining ...

Ensuring satellite reliability with vibration testing

by Brüel & Kjær Sound & Vibration Measurement A/S  (May 1, 2013)

They offer space test and ground-based facilities where they design and build instruments, and analyse and process data. They also operate ground-station facilities, and lead conceptual studies for future missions. Working with space and ground-based groups around the world, they are now the largest space science department in Europe, and have ...

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