Results 221 to 230 of about 10,916 (260)
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Operational Modal Analysis of Aluminum Beams
Journal of the IEST, 2007Natural frequencies obtained by modal analysis are important to engineers interested in predicting the dynamic behavior of structures. Traditional modal analysis involves impact testing or shaker testing, where response signal and input force are measured to obtain the transfer function. However, for large structures, input excitation force measurement
S. Rudroju, A. Gupta, S. Yandamuri
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Uncertainty calculation in (operational) modal analysis
Mechanical Systems and Signal Processing, 2007In (operational) modal analysis the modal parameters of a structure are identified from the response of that structure to (unmeasurable operational) perturbations. A key issue that remains to be solved is the calculation of uncertainty bounds on the estimated modal parameters. The present paper fills this gap.
Pintelon, Rik +2 more
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Operational modal analysis and earthquake engineering
2009Operational Modal Analysis (OMA) techniques are powerful and versatile and applications in technical literature are becoming frequent. In the present paper a number of case studies will be reviewed in order to point out the effectiveness of such procedures in the earthquake engineering area.
RAINIERI, Carlo +2 more
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Operational modal analysis using variational Bayes
2015Operational modal analysis is the primary tool for modal parameters identification in civil engineering. Bayesian statistics offers an ideal framework for analyzing uncertainties associated with the identified modal parameters. However, the exact Bayesian analysis is usually intractable due to the high computation demanding in obtaining the posterior ...
Li, Binbin, Der Kiureghian, Armen
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Operational modal analysis for Canton Tower
Smart Structures and Systems, 2012The 610 m high Canton Tower (formerly named Guangzhou New Television Tower) is currently considered as a benchmark problem for structural health monitoring (SHM) of high-rise slender structures. In the benchmark study task I, a set of 24-hour ambient vibration measurement data has been available for the output-only system identification study.
Yan Niu +2 more
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Continuous-time operational modal analysis
2006In operational modal analysis the modal parameters of a structure are identified from the response of that structure to unmeasurable operational perturbations. It is based on the assumption that the operational perturbations are white at the sampling instances.
Pintelon, Rik +2 more
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Operational modal analysis by thermoelasticity
2009In this work the theoretical and practical possibility of using a new measurement technique, based on high speed thermographic acquisition systems, for the study of the dynamic response of objects has been demonstrated. This methodology has been named thermoelastic modal stress analysis (TMSA).
MARSILI, Roberto +2 more
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Subspace identification for operational modal analysis
2010This chapter deals with the estimation of modal parameters from measured vibration data using subspace techniques. An in-depth review of subspace identification for operational modal analysis is provided. In addition, two recent developments are emphasised: the estimation of the probability density function of the modal parameters, and the use of an ...
Edwin Reynders, Guido Roeck
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An organic electrochemical transistor for multi-modal sensing, memory and processing
Nature Electronics, 2023, , Tao Li
exaly