CTI Bibliography of Technical Papers - Vibration

Revised 2013

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Vibration
Order NumberTitleAuthorDate
How Sensor Mounting Affects Measurement David A. Corelli, IMI Sensors 2013
Abstract: Sensor mounting can significantly affect both overall vibration and FFT data. The paper shows the frequency response of various common mounting methods, such as stud, 2-rail magnet, and flat magnet measured under controlled laboratory conditions and correlates that with actual data collected on machinery in the field. It also shows the dramatic effect that mounting has on commonly used high frequency measurements such as Spike Energy and PeakVue that are used for early warning of bearing and gear faults.
Wireless Vibration Monitoring for Condition Based Maintenance Cooling Towers Gerry Nadley, MachineTalker, Inc 2008
Abstract: An overview of peer to peer wireless ad hoc networks explaining basic characteristics, and modes of operating. This will include reliability and ease of operating and installation. The wireless network application will show the operating of the wireless network for vibration monitoring of cooling tower motors and gearboxes using an oil refinery installation as an example. The discussion will include sensor selection (IMI sensors), radio placement and connection to a remote control room. The post analysis software will be described including FFTs (Fast Fourier Tranform), trending and the computer analysis to determine vibration anomalies.
Smart Vibration Switches Dr. George Zusman - PCB Piezotronics 2007
Abstract: This intelligent, two-wire vibration switch is a new type of device for machinery protection. It has been designed to be a cost effective tool for generating an alarm or initiating shutdown of small to medium-size machinery, such as electrical motors, pumps, cooling towers, fans, and compressors.
Roulette and Mechanical Vibration Switches: What are Your Odds? Gene Ort 2006
Abstract: You have a better chance winning at roulette than protecting your cooling towers with mechanical vibration switches. What are the odds at roulette? You put your money on the table enough times and the casino takes 5.76% of it. The switches are not even close.
Vibration Control: New Fan Blade Tip Reduces Pulsation Henk van der Spek, Howden Cooling Fans 2003
Abstract: This paper describes the test method and test results of a research project into the effect of tip speed and blade angle of the cooling tower fan on the pulsation forces exercised on the fan stack. Pulsation on the fan ring is directly caused by the movement of the cooling tower fan, and occurs at blade passing frequency. The pulsation force is a combination of the aerodynamically generated pressure difference between the upstream and downstream side of the fan blade and the velocity (under) pressure generated by the surface of the blade tip. The extent of this effect has been confirmed by extensive measurements.
Cost Effective Cooling Tower Fan Vibration Monitoring Talmadge D. Ward Jr., and Mickey Talley 2003
Abstract: Installation of a low cost vibration system is being deployed at Paducah Gaseous Diffusion Plant using accelerometers on cooling tower fan gearboxes. While this system does not have an automatic data gathering or vibration trip capability, the manual data is used to improve the reliability of the fans while reducing vibration levels and maintenance cost. Accelerometers are installed on the gearboxes perpendicular to the drive shaft and the cable run the length of the support structure ending outside the fan shroud at the drive motor. During route vibration data collection, additional gearbox vibration overall values and spectra are stored with the conventional motor data.
Types of Cooling Tower Fan Vibration Monitoring (TP-87-09) Robert Alan Hund & Ivo Dabelic, Vibranalysis Engineering Corp. 1987
Abstract: Presents cooling tower fan vibration monitoring techniques: A) Trending through existing in plant p.m. program; B) Hardwired multi-point per panel application; C) One device (switch) per point application. Advantages and disadvantages will be discussed and case histories cited.
Cooling Tower Fan Vibration Monitoring (TP-86-11) D.L. Pete Bernhard, IRD Mechanalysis, Inc. 1986
Abstract: The paper presents a few basics of vibration and lists the primary causes of cooling tower vibration based on actual case histories. Continuous monitoring requirements are outlined. Recent equipment developments aimed specifically at cooling towers will be described. Recommended guidelines for effective control of cooling tower vibration is also presented.
Vibrations of Cooling Tower Fans (TP-7A) Michael P. Blake, Monsanto Chemical Company 1963
Abstract:


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