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Investigation of the semi-empirical method for force limited vibration testing


Investigation of the semi-empirical method for force limited vibration testing

Dharanipathi, Vijayamohan Rao (2003) Investigation of the semi-empirical method for force limited vibration testing. Masters thesis, Concordia University.



Conventional vibration testing of aerospace hardware is normally performed by controlling the acceleration input to the base of a test item to the specifications, namely the envelope of the acceleration peaks of the flight environment. In the nineties, NASA JPL led the development and implementation of an improved method called Force Limited Vibration (FLV) testing. In addition to controlling the input acceleration, the FLV testing measures and limits the reaction forces between the test item and the shaker. This force limiting technique results in acceleration notching at predominant natural frequencies of the test item. Due to its partly empirical nature, the crucial coefficient, C 2 , still requires some judgment for its selection. Although the semiempirical method is very powerful and has been implemented successfully on several space missions, there is still some work required to realize it and make it acceptable to everyone. The objective of this study is to present a comprehensive and complete analytical and experimental investigation on the semi-empirical method.

Divisions:Concordia University > Faculty of Engineering and Computer Science > Mechanical and Industrial Engineering
Item Type:Thesis (Masters)
Authors:Dharanipathi, Vijayamohan Rao
Pagination:xiv, 183 leaves : ill. (some col.) ; 29 cm.
Institution:Concordia University
Degree Name:Theses (M.A.Sc.)
Program:Mechanical and Industrial Engineering
Thesis Supervisor(s):Sedaghati, R
ID Code:2317
Deposited By: Concordia University Libraries
Deposited On:27 Aug 2009 17:27
Last Modified:08 Dec 2010 15:26
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