Results 71 to 80 of about 1,822,978 (208)

Vibration-based damage detection in an aircraft wing scaled model using principal component analysis and pattern recognition [PDF]

, 2008
This study deals with vibration-based fault detection in structures and suggests a viable methodology based on principal component analysis (PCA) and a simple pattern recognition (PR) method. The frequency response functions (FRFs) of the healthy and the
Cartmell, Matthew, Cartmell, Matthew P., Ostachowicz, Wieslaw, Trendafilova, I.   +3 more
core   +1 more source

Separation of oxidatively damaged DNA Nucleobases and Nucleosides on Packed and Monolith C18 Columns by HPLC-UV-EC [PDF]

, 2008
This study involves the incorporation of a commercially available Phenomenex Onyx C18 monolith column into the separation and detection of oxidative DNA damage.
Kelly, Michele C., Smyth, Malcolm R., White, Blánaid   +2 more
core   +1 more source

Triple correlation for detection of damage-related nonlinearities in composite structures [PDF]

, 2015
Nonlinear effects in vibration responses are investigated for the undamaged composite plate and the composite plate with a delamination. The analysis is focused on higher harmonic generation in vibration responses for various excitation amplitude levels.
Aymerich, F., Gelman, Leonid, Klepka, A., Pieczonka, L., Staszewski, W. J., Strączkiewicz, M., Uhl, T.   +6 more
core   +2 more sources

Underlying modal data issues for detecting damage in truss structures [PDF]

Independent of the modal identification techniques employed for damage detection, use of measured modal data limits the expectations for damage location.
Kashangaki, Thomas A-L., Lim, Tae W., Smith, Suzanne Weaver   +2 more
core   +1 more source

Damage and repair classification in reinforced concrete beams using frequency domain data [PDF]

, 2015
This research aims at developing a new vibration-based damage classification technique that can efficiently be applied to a real-time large data. Statistical pattern recognition paradigm is relevant to perform a reliable site-location damage diagnosis ...
A Webb, Ali A. Al-Ghalib, C Farrar, C Farrar, EP Carden, Fouad A. Mohammad, H Sohn, H Wenzel, IT Jolliffe, K Worden, NMM Maia, P Carden, S Doebling   +12 more
core   +1 more source

Vibration-based damage detection in plates by using time series analysis [PDF]

, 2008
This paper deals with the problem for vibration health monitoring (VHM) in structures with nonlinear dynamic behaviour. It aims to introduce two viable VHM methods that use large amplitude vibrations and are based on nonlinear time series analysis.
Manoach, Emil, Trendafilova, I.
core   +1 more source

Research on Bridge Integrity Assessment and Early Warning Monitoring Methods Based on Bearing Reaction Force

Buildings
Traditional bridge monitoring and damage identification techniques typically rely on full-bridge coverage of sensors, such as displacement or strain sensors.
Shu Li, Luyi Gan, Ruinan Zhao, Shenao Wang, Yu Zhou   +4 more
doaj   +1 more source

Selective detection of bacterial layers with terahertz plasmonic antennas [PDF]

, 2012
Current detection and identification of micro-organisms is based on either rather unspecific rapid microscopy or on more accurate complex, time-consuming procedures.
Abbas, Berrier, Berrier, Debuisson, Demchick, Efrima, Giannini, Gómez Rivas, Hu, Ivnitski, Lazcka, Markelz, Mazhorova, Smye, Su, Taylor, Walther   +16 more
core   +2 more sources

Enhancing the Damage Detection and Classification of Unknown Classes with a Hybrid Supervised–Unsupervised Approach

Infrastructures
Most damage-assessment strategies for dynamic systems only distinguish between undamaged and damaged conditions without recognizing the level or type of damage or considering unseen conditions.
Lorenzo Stagi, Lorenzo Sclafani, Eleonora M. Tronci, Raimondo Betti, Silvia Milana, Antonio Culla, Nicola Roveri, Antonio Carcaterra   +7 more
doaj   +1 more source

Trend Decomposition for Temperature Compensation in a Radar-Based Structural Health Monitoring System of Wind Turbine Blades

Sensors
The compensation of temperature is critical in every structural health monitoring (SHM) system for achieving maximum damage detection performance. This paper analyses a novel approach based on seasonal trend decomposition to eliminate the temperature ...
Jonas Simon, Jochen Moll, Viktor Krozer
doaj   +1 more source