Damage detection without noise in modal data
Sub-Nyquist signal-reconstruction-free operational modal analysis and damage detection in the presence of noise
... with data acquisition and transmission, this paper puts forth a novel approach for undertaking operational modal analysis (OMA) and damage localization relying on compressed vibrations measurements ...
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Damage detection in beams from modal and wavelet analysis using a stationary roving mass and noise estimation
... The obtained SNR values are shown in Table 4. The estimated values are in the range 40 − 70 dB. It can be seen mode 2 is clearly the least noisy (highest SNR values) and it is expected to be the most reliable mode for ...
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Damage Diagnosis of Structures Using Modal Data and Static Response
... estimate damage using modal data and static response of a damaged ...use modal data with and without noise or static displacement to formulate objective ...functions. ...
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Damage detection of multi-girder bridge superstructure based on the modal strain approaches
... of damage in a multi-girder bridge superstructure, which in turn affect its dynamic response undesirably, cannot be identified in one ...of damage cannot be carried out ...the modal data by ...
22
New dynamics concepts for vibration-based damage detection: wavelet modal curvatures
... Abstract. Modal curvatures are widely used in damage detection in beams and plates, allowing not only indication of damage occurrence but also determination of damage location, with no ...
6
Damage Detection of Ferrocement Tanks Using Experimental Modal Analysis and Finite Element Analysis
... impact damage detection in carbon fiber reinforced epoxy rectangular plate using their vibration ...the damage localization using double pulse TV ...experimentally damage detection ...
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A state of the art review of modal-based damage detection in bridges: development, challenges, and solutions
... assessed damage features were not reliable for damage detection and that many spatial parameters produced only rough estimations of damage location in the absence of advanced signal processing ...
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Multiple damage detection in beams in noisy conditions using complex-wavelet modal curvature by laser measurement
... Abstract. Detection of multiple damage using modal curvature in noisy environments has become a research focus of considerable challenge and great significance over the last few ...of modal ...
6
Modal data-based approach to structural damage identification by means of imperialist competitive optimization algorithm
... in damage detection problems, it is important to use an optimizer the solutions of which to a certain problem in dierent runs are in a specic admissible ...detecting damage, independent of the ...
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Crack detection in simply supported beams using stationary wavelet transform of modal data
... proposed damage detection algorithm is that DWT or SWT is used to decompose the mode shapes of structures into approximate coefficients and detailed ...the damage indications can be obtained when ...
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Detection of cracks in simply-supported beams by continuous wavelet transform of reconstructed modal data
... method without baseline modal parameters for damage detection in beam-like structures with small cracks, whose crack ratio ( r H c / H ) is less than ...of damage because it includes ...
51
Modal flexibility method for structural damage detection in suspension bridges
... Multiple damage scenarios, effect of number of data acquisition points in suspension bridges also need to be addressed with further progress of this ...that modal flexibility based method have a good ...
9
Application of vibration-based techniques for modal identification and damage detection in structures
... 5.3.4 Finite element analysis Finite element analysis was performed to verify the results of modal identification. Midas Civil 2012 finite element software was used to carry out the simulations. Only first four ...
152
Identification of Modal Parameters and Damage Detection of a Building Affected by the 2011 Tohoku Earthquake
... for damage detection, the modal parameters of a damaged building is identified from ambient vibration data and a vibration based method for damage detection are applied to the ...
8
Detection of defects in reinforced concrete beams using modal data
... The changes in the first derivative of the local flexural stiffness were evaluated from modal data obtained from the control beam without any defect and two tes[r] ...
5
Application of weighted average on modal parameters for damage detection algorithms: Case study on steel beam
... Subsequently, damage was created by cutting the beam section at mid-span from the tension zone to induce different degrees of flexural ...of damage, the Eigen value analysis was repeated to obtain the ...
10
Damage Detection Using Modal Strain Energy Method In Honeycomb Sandwich Beams With Multiple Delaminations
... The modal strain energy variation of a cantilever sandwich beam (consisting of top and bottom face plates with honeycomb core in between) with multiple delaminations or debonds embedded between the face-layer ...
22
Pre-processing for noise detection in gene expression classification data
... noisy data, several approaches and algorithms for noise detection can be found in the ...distance-based noise detection techniques, adopted in a pre-processing ...original data ...
9
Damage Detection of Roller Bearing System Using Experimental Data
... experimental data relation was obtained for vibration amplitude as a function of surface defect, load and speed, material ...analysis data from the experiment. Experimental and theoretical modal ...
6
Analysis of the Response of Modal Parameters to Damage in CFRP Laminates Using a Novel Modal Identification Method
... measured data [71]. Damage was introduced on a square CFRP plate with a 0° - 90° weave of fibres, by drilling several ...the damage detection ...detect damage through visual inspection ...
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