Vibration Problems Of Rotating Machinery Due To Coupling Misalignments
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| Author | : Frederick Lee Barber |
| Publisher | : |
| Total Pages | : 280 |
| Release | : 1988 |
| Genre | : Mechanical engineering |
| ISBN | : |
Vibrational analysis of rotating machinery is able to identify a large number of system ills. Shaft bow, shaft unbalance and coupling misalignments make up the major portion of the observed vibrational frequency spectra of rotating machinery. These vibrational spectra can be used to determine the type of rotating system abnormality, the degree of misalignment and the rate of alignment degradation. The proper joining of rotating machinery is a critical issue with high power and a high speed equipments. Couplings used to join machinery have a broad spectrum of characteristics and specific purposes. Couplings are used to compensate for axial, lateral and angular misalignments. In addition, couplings may exhibit constant or non-constant input versus output speed relationships. The importance of mating a driving and driven piece of equipment with the properly designed coupling is paramount. In the following report the author discusses numerous types of couplings, the behavioral characteristics of couplings and the considerations which must be taken into account when selecting a coupling for a rotating system. The analysis which follows list the various alignment discrepancies which can be detected by vibrational analysis and the requirements for non-constant and constant velocity characteristics of couplings. In addition, numerous types of couplings are catalogued and discussed. Theses. (FR).
| Author | : Robert B. McMillan |
| Publisher | : CRC Press |
| Total Pages | : 238 |
| Release | : 2020-11-26 |
| Genre | : Technology & Engineering |
| ISBN | : 8770222436 |
A theoretical and practical understanding of unbalance and misalignment in rotating equipment is presented here. These two conditions account for the vast majority of problems with rotating equipment encountered in the real world.;Numerous examples and solutions are included to assist in understanding the various concepts. Included is information on vibration and how it is used to determine the operational integrity of rotating machinery. Also detailed are the relationships between various vibration characteristics which provide an understanding of the forces generated within operating machinery when conditions of unbalance and misalignment are present. Resonance and beat frequencies are detailed along with sources and cures.;Also covered are proper inspection procedures, single plane and dual plane methods of balancing rotating equipment, the three circle method of balancing slow speed fans, advanced rim and face method of precision alignment, and the reverse indicator method of alignment plus much more to fortify the learning experience.
| Author | : Gustavo Ibarguen |
| Publisher | : |
| Total Pages | : |
| Release | : 2015 |
| Genre | : |
| ISBN | : |
Rotating machinery is used in a variety of essential engineering systems, including motors, pumps, compressors, and gearboxes. The gas, oil, power, manufacturing, and process industries rely heavily on rotating machines. Their failures can be very expensive and lead to a decrease in production so proper maintenance is essential. Condition based maintenance is a relatively new strategy of performing maintenance on equipment when signal processing of sensor signals indicates a failure may be imminent. The most popular sensors for condition based maintenance measure the vibration of the rotating machine. These sensors provide information about the overall state of the machine and point to potential faults. This thesis studies the effectiveness of analyzing vibration data to determine the state of operation of rotating machine systems. Specifically, research and experiments are performed to discover if vibration signatures can determine if a system has certain faults, such as shaft misalignment, unbalance, or deformation in shaft couplings. The presence or absence of these faults can lead to the determination of the health of operation of a rotating machine system.
| Author | : John Piotrowski |
| Publisher | : CRC Press |
| Total Pages | : 865 |
| Release | : 2006-11-02 |
| Genre | : Technology & Engineering |
| ISBN | : 142001787X |
Rotating machinery is the heart of many industrial operations, but many engineers and technicians perform shaft alignment by guesswork or with limited knowledge of the tools and methods available to accurately and effectively align their machinery. Two decades ago, John Piotrowski conferred upon the field an unprecedented tool: the first edition of
| Author | : IMechE (Institution of Mechanical Engineers) |
| Publisher | : John Wiley & Sons |
| Total Pages | : 750 |
| Release | : 2004-10-22 |
| Genre | : Technology & Engineering |
| ISBN | : 9781860584473 |
This essential text contains the papers from the 8th international IMechE conference on Vibrations in Rotating Machinery held at the University of Wales, Swansea in September 2004. The themes of the volume are new developments and industrial applications of current technology relevant to the vibration and noise of rotating machines and assemblies. TOPICS INCLUDE Rotor balancing – including active and automatic balancing Special rotating machines – including micromachines Oil film bearings and dampers Active control methods for rotating machines Smart machine technology Dynamics of assembled rotors Component life predictions and life extension strategies The dynamics of geared systems Cracked rotors – detection, location ad prognosis Chaotic behaviour in machines Experimental methods and discoveries.
| Author | : Institute of Mechanical Engineers |
| Publisher | : CRC Press |
| Total Pages | : 625 |
| Release | : 2020-10-22 |
| Genre | : Technology & Engineering |
| ISBN | : 1000318532 |
Since 1976, the Vibrations in Rotating Machinery conferences have successfully brought industry and academia together to advance state-of-the-art research in dynamics of rotating machinery. 12th International Conference on Vibrations in Rotating Machinery contains contributions presented at the 12th edition of the conference, from industrial and academic experts from different countries. The book discusses the challenges in rotor-dynamics, rub, whirl, instability and more. The topics addressed include: - Active, smart vibration control - Rotor balancing, dynamics, and smart rotors - Bearings and seals - Noise vibration and harshness - Active and passive damping - Applications: wind turbines, steam turbines, gas turbines, compressors - Joints and couplings - Challenging performance boundaries of rotating machines - High power density machines - Electrical machines for aerospace - Management of extreme events - Active machines - Electric supercharging - Blades and bladed assemblies (forced response, flutter, mistuning) - Fault detection and condition monitoring - Rub, whirl and instability - Torsional vibration Providing the latest research and useful guidance, 12th International Conference on Vibrations in Rotating Machinery aims at those from industry or academia that are involved in transport, power, process, medical engineering, manufacturing or construction.
| Author | : Arthur W. Lees |
| Publisher | : CRC Press |
| Total Pages | : 287 |
| Release | : 2020-07-02 |
| Genre | : Science |
| ISBN | : 1000065944 |
Vibration Problems in Machines explains how to infer information about the internal operations of rotating machines from external measurements through methods used to resolve practical plant problems. Second edition includes summary of instrumentation, methods for establishing machine rundown data, relationship between the rundown curves and the ideal frequency response function. The section on balancing has been expanded and examples are given on the strategies for balancing a rotor with a bend, with new section on instabilities. It includes case studies with real plant data, MATLAB® scripts and functions for the modelling and analysis of rotating machines.
| Author | : Maurice L. Adams |
| Publisher | : CRC Press |
| Total Pages | : 642 |
| Release | : 2000-10-24 |
| Genre | : Technology & Engineering |
| ISBN | : 9780203902165 |
This comprehensivereference/text provides a thorough grounding in the fundamentals of rotating machinery vibration-treating computer model building, sources and types of vibration, and machine vibration signal analysis. Illustrating turbomachinery, vibration severity levels, condition monitoring, and rotor vibration cause identification, Ro
| Author | : Dario Di Maio |
| Publisher | : Springer |
| Total Pages | : 239 |
| Release | : 2018-06-04 |
| Genre | : Technology & Engineering |
| ISBN | : 3319746936 |
Rotating Machinery, Vibro-Acoustics & Laser Vibrometry, Volume 7: Proceedings of the 36th IMAC, A Conference and Exposition on Structural Dynamics, 2018, the seveth volume of nine from the Conference brings together contributions to this important area of research and engineering. The collection presents early findings and case studies on fundamental and applied aspects of Rotating Machinery, Hybrid Testing, Vibro-Acoustics & Laser Vibrometry, including papers on: Rotating Machinery Vibro-Acoustics Experimental Techniques Scanning Laser Doppler Vibrometry Methods
| Author | : H. Prashad |
| Publisher | : Woodhead Publishing |
| Total Pages | : 264 |
| Release | : 2006-01-31 |
| Genre | : Technology & Engineering |
| ISBN | : 1845691113 |
Bearings are widely used in rotating machines. Understanding the factors affecting their reliability and service life is essential in ensuring good machine design and performance. Solving tribology problems in rotating machines reviews these factors and their implications for improved machine performance. The first two chapters review ways of assessing the performance and reliability of rolling-element bearings. The author then goes on to discuss key performance problems and the factors affecting bearing reliability. There are chapters on cage and roller slip, and particular types of failure in equipment such as alternators, condensers and pumps. The author also reviews the effects of such factors as localised electrical currents, seating, clearance, grades of lubricant, axial forces, vibration on performance and service life. The book concludes by reviewing ways of improving bearing design. Solving tribology problems in rotating machines is an essential reference for engineers involved in the design and operation of rotating machines in such sectors as power generation, electrical and automotive engineering. Discusses improved machine performance Examines factors affecting bearing reliability An essential reference for engineers
