| 1. |
- Ahlin, Kjell, et al.
(författare)
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A smart way to analyze dynamic data
- 2003
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Ingår i: Sound & Vibration. - : Acoustical Publications, Inc.. - 1541-0161 .- 2693-1443. ; :February, s. 20-22
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- In recent years MATLAB® has become a common software tool for general computational mathematics, in universities as well as in industry. In the field of noise and vibration analysis, MATLAB is very common in universities, but perhaps a little less common in the industrial world. In this article some ideas are presented on how MATLAB can be successfully used for analyzing experimental noise and vibration data. Through the introduction of toolboxes in this field, the less experienced user can take advantage of the powerful functionality of MATLAB, either as the main tool or as a complement to the many excellent menu driven systems available on the market. Some of the advantages and disadvantages of using MATLAB versus menu driven systems are also discussed.
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| 2. |
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| 3. |
- Brandt, Anders
(författare)
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ABRAVIBE - a toolbox for teaching and learning vibration analysis
- 2013
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Ingår i: Sound & Vibration. - : Acoustical Publications, Inc.. - 1541-0161 .- 2693-1443. ; :November, s. 12-17
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- A Matlab® toolbox has been developed as a tool for teaching and learning vibration engineering and vibration analysis. This free, open software will also run under GNU Octave, if an entirely free software platform is wanted, with a few functional limitations. The toolbox functionality includes simulation of mechanical models as well as advanced analysis such as time-series analysis, spectralanalysis, frequency response and correlation function estimation, modal parameter extraction, and rotating machinery analysis (order tracking). In this article, an overview of the functionality is given and recommended use in teaching is discussed.
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| 4. |
- Brandt, Anders, et al.
(författare)
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Main principles and limitations of current order tracking methods
- 2005
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Ingår i: SOUND AND VIBRATION. - BAY VILLAGE : ACOUSTICAL PUBL INC. - 0022-460X. ; , s. 19-22:March, s. 19-22
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Tidskriftsartikel (refereegranskat)abstract
- Order tracking is a widely used tool for analysis of vibrations generated in vehicle drivetrain components, since many vibrations are related to engine RPMs. In recent years, offline order tracking has become suitable due to enhanced computer speeds. Many methods, some patented, for both online and offline order tracking have been presented over the years. This article reviews some basic ideas behind current methods and compares their main advantages and limitations. Some basic time-frequency concepts and time window effects are reviewed. Questions on suitable tachometers and their number of pulses per revolution are also addressed. The possibility of processing RPM dependent data without tachometers is also discussed.
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| 5. |
- Brandt, Anders, et al.
(författare)
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Noise and vibration measurement system basics
- 2006
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Ingår i: SOUND AND VIBRATION. - BAY VILLAGE : ACOUSTICAL PUBL INC. - 0022-460X. ; 40:4, s. 9-11:April, s. 9-10
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Tidskriftsartikel (refereegranskat)
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| 6. |
- Brandt, Anders, et al.
(författare)
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Sampling and Time-Domain Analysis
- 2010
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Ingår i: Sound and Vibration. - : ACOUSTICAL PUBL INC. - 0022-460X. ; 44:5, s. 13-17:May, s. 13-17
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Tidskriftsartikel (refereegranskat)abstract
- Most noise and vibration measurement and analysis systems are able to record time history signals for subsequent processing. This article deals with some important aspects of recording and processing these data streams in order to maintain analysis integrity.
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| 7. |
- Brandt, Anders
(författare)
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Some educational vibration measurement exercises
- 2016
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Ingår i: Sound & Vibration. - : Acoustical Publications, Inc.. - 1541-0161 .- 2693-1443. ; :January, s. 12-14
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- Four exercises are presented to teach experimental vibration measurements: mass calibration; accelerometer mounting; singledegree-of-freedom vibration measurement and analysis; and fullscale experimental modal analysis.
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| 8. |
- Brandt, Anders, et al.
(författare)
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Test analysis verification exercise using open software
- 2014
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Ingår i: Sound & Vibration. - : Acoustical Publications, Inc.. - 1541-0161 .- 2693-1443. ; :June, s. 13-16
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- Teaching the topic of structural dynamics in any engineering field is a true challenge due to the wide span of the underlying subjects like mathematics, mechanics (both rigid-body and continuum mechanics), numerical analysis, random data analysis and physical understanding. In this article we present a pedagogical example of using experimental modal analysis to verify and calibrate a finite-element model using free, open-source software.
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