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    <ns1:title language="en">Damage detection and localization for civil structural health monitoring</ns1:title>
    <ns2:subtitle language="en">doctoral dissertation</ns2:subtitle>
    <ns2:alt_title language="sr">Detekcija i lokalizacija oštećenja pri monitoringu stanja građevinskih konstrukcija : doktorska disertacija</ns2:alt_title>
    <ns1:language>en</ns1:language>
    <ns1:description language="en">The presented thesis studied proposed a novel procedures that was implemented to
develop a Structural Health Monitoring (SHM) technique as non-destructive tests that can
be applied to detect damage, localization and quantification of civil structures. This
technique based on investigations of dynamic characteristics of the structures to detect the
damages through their operational conditions of service life. The proposed procedure was
built using Artificial Intelligence Technique (AIT) under concept of the methods of damage
detection based on updating FE model using heuristic optimization methods. The proposed
SHM procedure Using Simulated Annealing heuristic optimization methos was shortened
to &quot;SHMUSA-procedure&quot;. The SHMUSA-procedure was verified on four types of steel
structural models; simply supported overhang beam; grid bridge, Verendeel bridge and
Multi-storey building model to prove reliability, efficiency and robustness under various
dynamic behaviours. The SHMUSA-procedure was adopted the changes in dynamic
characteristics, natural frequency and normalized mode shape vector, which are extracted
from experimental modal analysis and estimated from numerical modal analysis of the
damage scenario for structural models. and their characteristics, location and severity,.
The experimental testing is implemented using simulation of ambient vibration
measurements by exciting the structural models by shaker device using generated vibration
signal. The dynamic response, output only, of the structural models are recorded using 8-
accelerometers and 8-channel acquisition device. Experimentally, the modal properties of
the structural models are extracted by ARTeMIS extractor software using Frequency
Domain Decomposition (FDD) technique by peak picking method. The numerical
simulation of structural models are modeled in Finite Element Model (FEM) using ANSYS
package software by ANSYS Parametric Design Language (APDL). Numerically, the
modal properties of structural models are estimated by ANSYS software using block
Lanczos method of dynamic modal analysis for isotropic elastic linear structural models
type. The Finite Element Analysis (FEA) is performed using three element types in the FE
models, Beam4, Shell63 and Mass21, to analyze the four structural models...</ns1:description>
    <ns1:description language="sr">Prikazani teza studije je predložio nove procedure koje se sprovode da razvije Strukturno
Zdravlje monitoring (SHM) tehniku kao bez razaranja testova koje se mogu primeniti za
detekciju oštećenja, lokalizaciju i kvantitativno državnih struktura. Ova tehnika zasniva na
istraživanjima dinamičkih karakteristika objekata da otkriju štetu kroz njihove operativne
stanja radnog veka. Predloženi SHM Postupak se utvrdi na četiri vrste čeličnih strukturnih
modela; jednostavno podržali ispust zraka; rešetka most, Verendeel most i model
višespratnica. Predloženi SHM postupak je usvojila izmene u dinamičkih karakteristika,
prirodnog učestalosti i načina oblika, strukturnih modela, koji su izvađeni iz
eksperimentalne modalne analize i procenjene od numeričke analize modalni.
Eksperimentalno ispitivanje se sprovodi pomoću simulaciju ambijentalnih vibracija
merenja od najuzbudljivijih strukturne modele šejker uređaja sa generiše vibracije
signalom. Dinamički odgovor, samo izlaz, strukturnih modela su snimljeni korišćenjem 8-
ubrzanja i 8-channle uređaj sticanje. Eksperimentalni modal osobine strukturnih modela su
izdvojite pomoću Artemis odsisnog softvera pika metodom branje frekventnom domenu
razlaganja (FDD) tehnikom. Numerička simulacija strukturnih modela su modelira
konačnih elemenata Model (MKE) koristeći ANSIS paket Softvare bi ANSIS Parametric
Design Jezik (APDL). Numeričke modal svojstva strukturnih modela se procenjuju pomoću
ANSIS softver za blok algoritam metodom dinamičke analize modalne za izotropnoj
elastične linearno tipa strukturni modeli. U analizi FE, dva tipa elementa se primenjuju na
FEM da se analiziraju strukturne modele, Beam4 i Mass21 tip elementa.
Predloženi SHM Postupak se vrši pomoću vještačka inteligencija tehnika (AIT), koji se
primenjuje u ovoj studiji pomoću funkcije na tzv metodu heuristike optimizaciju za
otkrivanje oštećenja i njihove karakteristike, lokacije i ozbiljnost, u strukturnim modelima.
Predloženi SHM postupak usvaja heurističkog optimizaciju simuliranog kaljenja (SA)
metoda u AIT. Predloženi SHM procedura se kreira pomoću višu stručnu računara jezik
MATLAB softvera životne sredine za te svrhe. U ovoj studiji, modifikovani cilj funkcija je
usvojen u SA metode optimizacije uključiti osetljive modalni parametri za promenu u
savijanja krutosti strukturnog modela usled prisustva štete...</ns1:description>
    <ns1:description language="en">Civil engineering - Structural engineering - Vibration of steel structures / Građevinarstvo - Građevinarstvo - inženjerske konstrukcije - Vibracija čeličnih konstrukcija  

Datum odbrane: 30. 09. 2016. </ns1:description>
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        <ns3:firstname> Saad J. A. </ns3:firstname>
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