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   Articles with "operational modal" as a keyword



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Detection and correction of synchronization-induced errors in operational modal analysis

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recommendations! Published in 2020 at "Archive of Applied Mechanics"

DOI: 10.1007/s00419-020-01683-6

Abstract: Operational modal analysis (OMA) methods are frequently applied for obtaining information on structural dynamic parameters, such as natural frequencies and mode shapes. While synchronization between acceleration response data sets used in OMA is not a… read more here.

Keywords: synchronization induced; induced errors; operational modal; modal analysis ... See more keywords
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An Experimental Evaluation of Two Potential Improvements for 3D Laser Vibrometer Based Operational Modal Analysis

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recommendations! Published in 2017 at "Experimental Mechanics"

DOI: 10.1007/s11340-017-0307-x

Abstract: The use of scanning laser doppler vibrometers (SLDV) is common practice in the context with experimental modal analysis. In recent years, commercial 3D SLDV have been developed, where three laser heads simultaneously point to the… read more here.

Keywords: reference signal; modal analysis; operational modal; modal ... See more keywords
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First Results on Regularized Time-Varying Operational Modal Analysis

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recommendations! Published in 2018 at "IFAC-PapersOnLine"

DOI: 10.1016/j.ifacol.2018.09.112

Abstract: Abstract This paper presents an efficient nonparametric time-varying time domain system identification method for the Operational Modal Analysis (OMA) framework. OMA tackles industrial measurements of vibrating structures in real-life operating conditions without the exact knowledge… read more here.

Keywords: time varying; modal analysis; operational modal; time ... See more keywords
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A novel time-domain representation of transmissibility and its applications on operational modal analysis in the presence of non-white stochastic excitations

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recommendations! Published in 2019 at "Journal of Sound and Vibration"

DOI: 10.1016/j.jsv.2019.05.047

Abstract: Abstract Transmissibility based operational modal analysis (TOMA) method is an effective solution to modal parameter estimation problem for a linear system under non-white stochastic excitations. However, the TOMA method has two main limitations. Firstly, the… read more here.

Keywords: time domain; operational modal; transmissibility; domain ... See more keywords
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Detection of structural abnormality of industrial rotary machine using DRS-aided operational modal analysis

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recommendations! Published in 2020 at "Measurement"

DOI: 10.1016/j.measurement.2020.108098

Abstract: Abstract One of the important issues concerning the dynamic analysis of rotating machines is the separation of deterministic and random components. In industrial conditions, the determination of dynamic parameters is performed using Operational Modal Analysis… read more here.

Keywords: drs; analysis; operational modal; modal analysis ... See more keywords
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Operational Modal Analysis of the Curved JUST Footbridge Induced by Human

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recommendations! Published in 2020 at "Procedia Manufacturing"

DOI: 10.1016/j.promfg.2020.02.250

Abstract: Abstract This paper investigated the vibration levels of curved library footbridge that is located in a composite structure building in the center of Jordan University of Science and Technology (JUST) induced by human. Operational modal… read more here.

Keywords: induced human; operational modal; modal analysis; footbridge ... See more keywords
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A new scenario-based approach to damage detection using operational modal parameter estimates

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recommendations! Published in 2017 at "Mechanical Systems and Signal Processing"

DOI: 10.1016/j.ymssp.2017.03.007

Abstract: Abstract In this paper a vibration-based damage localization and quantification method, based on natural frequencies and mode shapes, is presented. The proposed technique is inspired by a damage assessment methodology based solely on the sensitivity… read more here.

Keywords: methodology; operational modal; scenario based; damage ... See more keywords
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Dual ant colony operational modal analysis parameter estimation method

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recommendations! Published in 2018 at "Mechanical Systems and Signal Processing"

DOI: 10.1016/j.ymssp.2017.04.046

Abstract: Abstract Operational Modal Analysis (OMA) is a common technique used to examine the dynamic properties of a system. Contrary to experimental modal analysis, the input signal is generated in object ambient environment. Operational modal analysis… read more here.

Keywords: operational modal; modal analysis; ant colony; parameter ... See more keywords
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A signal processing framework for operational modal analysis in time and frequency domain

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recommendations! Published in 2019 at "Mechanical Systems and Signal Processing"

DOI: 10.1016/j.ymssp.2018.06.009

Abstract: Abstract In operational modal analysis (OMA), correlation functions, sometimes referred to as covariance functions, are commonly used for modal parameter extraction. Other techniques for parameter estimation use spectral density estimates. There are several known techniques… read more here.

Keywords: frequency; harmonics; signal processing; operational modal ... See more keywords
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Bayesian data driven model for uncertain modal properties identified from operational modal analysis

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recommendations! Published in 2020 at "Mechanical Systems and Signal Processing"

DOI: 10.1016/j.ymssp.2019.106511

Abstract: Abstract In structural health monitoring (SHM), ‘data driven models’ are often applied to investigate the relationship between the dynamic properties of a structure and environmental/operational conditions. Dynamic properties and environmental/operational conditions may not be directly… read more here.

Keywords: operational modal; data driven; identified operational; modal analysis ... See more keywords
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Bayesian operational modal analysis with multiple setups and multiple (possibly close) modes

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recommendations! Published in 2021 at "Mechanical Systems and Signal Processing"

DOI: 10.1016/j.ymssp.2020.107261

Abstract: Abstract Operational modal analysis (OMA) is increasingly applied to identify the modal properties of a constructed structure for its high economy in implementation. Though great achievement has been made in OMA, it is still challenging… read more here.

Keywords: close modes; multiple setups; operational modal; modal analysis ... See more keywords