Alexander, A., & Belanus, K. (2014, June), Construction of a Vibrating Structure for Demonstration of Vibration Measurement and FFT Analysis   Paper presented at 2014 ASEE Annual Conference & Exposition, Indianapolis, Indiana. 10.18260/1-2--20208

\bibitem{asee_peer_20208}
  Alexander, A., \& Belanus, K. (2014, June), \emph{Construction of a Vibrating Structure for Demonstration of Vibration Measurement and FFT Analysis }
  Paper presented at 2014 ASEE Annual Conference \& Exposition, Indianapolis, Indiana.
  10.18260/1-2--20208

Aaron Alexander and Kenneth Belanus.  "Construction of a Vibrating Structure for Demonstration of Vibration Measurement and FFT Analysis ".  2014 ASEE Annual Conference & Exposition, Indianapolis, Indiana, 2014, June.  ASEE Conferences, 2014.  https://peer.asee.org/20208 Internet.  23 Apr, 2024

\bibitem{asee_peer_20208}
  Aaron Alexander and Kenneth Belanus.
  "Construction of a Vibrating Structure for Demonstration of Vibration Measurement and FFT Analysis ".
  \emph{2014 ASEE Annual Conference \& Exposition, Indianapolis, Indiana, 2014, June}.
  ASEE Conferences, 2014.
  https://peer.asee.org/20208 Internet.  23 Apr, 2024

@INPROCEEDINGS{asee_peer_20208
author = "Aaron Alexander and Kenneth Belanus"
title = "Construction of a Vibrating Structure for Demonstration of Vibration Measurement and FFT Analysis "
booktitle = "2014 ASEE Annual Conference \& Exposition"
year = "2014"
month = "June"
address = "Indianapolis, Indiana"
publisher = "ASEE Conferences"
note = {https://peer.asee.org/20208}
number = {10.18260/1-2--20208}
}

TY  - CPAPER
AB  -             Construction of a Vibrating Structure for Demonstration of                   Vibration Measurement and FFT AnalysisAbstract:Many Mechanical Engineering Technology (MET) programs include a Basic Instrumentationclass structured to give students hands-on experiences with measurement and analysis systems.As part of a module on vibrations and the Fast Fourier Transform (FFT), a lab was developed tocreate a three-tiered vibrating structure. This test apparatus consists of relatively inexpensivecomponents with threaded rods for the columns, plywood for the tiers, and an adjustable orbitalsander for the vibration source. The vibration source is mounted to the top tier, and its rotationalspeed is adjusted by a controller made for common power tools.Different vibrational modes for the structure can be observed by varying the speed of thevibration source. In one mode the entire structure sways back-and-forth with the top tier showingthe largest displacement. In a second mode the center tier is vibrating while the upper and lowertiers remain nearly motionless.One or more accelerometers may be attached to the tier having the largest displacement for aspecific mode. The accelerometer output is measured using either an oscilloscope or a computerdata acquisition system (DAS). A second test may be performed using a weight on the centertier to demonstrate a change in natural frequency with the added mass to the system. It is alsopossible to adjust the natural frequency by adjusting the position of the center tier relative to theupper and lower tiers.Including the oscilloscope in the required measurements gives the student exposure to a secondmeasurement system as well as allowing them to double-check the results of their analysis of thedata from the DAS. Analysis of the data is performed outside of the lab using MathCAD orExcel and builds off a previous tutorial lab on frequency analysis methods based on Fast FourierTransform (FFT) methods. The students are required to use the FFT results to identify theresonant frequencies as part of their lab report
AU  - Aaron Alexander
AU  - Kenneth Belanus
CY  - Indianapolis, Indiana
DA  - 2014/06/15
PB  - ASEE Conferences
TI  - Construction of a Vibrating Structure for Demonstration of Vibration Measurement and FFT Analysis 
UR  - https://peer.asee.org/20208
DO  - 10.18260/1-2--20208
ER  -