Πλοήγηση ανά Θέμα "National Technical University of Athens"
Αποτελέσματα 1-14 από 14
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Bayesian damage characterization based on probabilistic model of scattering coefficients and hybrid wave finite element model scheme
(2019)Ultrasonic Guided Wave(GW) has been proven to be sensitive to small damage. Motivated by the fact that the quantitative relationship between wave scattering and damage intensity can be described by scattering properties, ... -
Data features-based likelihood-informed Bayesian finite element model updating
(2019)A new formulation for likelihood-informed Bayesian inference is proposed in this work based on probability models introduced for the features between the measurements and model predictions. The formulation applies to both ... -
Experimental and numerical modelling of global buckling of underground pipelines due to high pressure and temperature
(2019)Pipelines transporting oil and natural gas may develop substantial compressive forces due to high temperature and pressure of the fluid content. Such compressive forces may cause vertical (upheaval) buckling of the pipeline. ... -
Investigation of the impact of seismic zone to the cost of construction of a 5-storey R/C building
(2021)Residing in a country like Greece, where the earthquake is a common phenomenon in most of its areas, the need for constructing earthquake resistant buildings that will provide security and functionality to their residents ... -
Model calibration of metsovo bridge using ambient vibration measurements from various construction phases
(2015)Available methods for structural model updating are employed to develop high fidelity models of the soil-foundation-structure of Metsovo bridge using ambient vibration measurements. The Metsovo bridge, the highest bridge ... -
Multi-hazard fragility assessment of bridges: Methodology and case study application
(2022)Reliability of road systems and their critical components exposed to multiple natural hazards is on the frontline of engineering research during the last three decades since potential damage of infrastructure is strongly ... -
Oscillating properties of jacket support structures subjected to extreme wave events
(2019)The paper presents laboratory measurements involving the response of a jacket structure scaled to represent the support structure of an offshore wind turbine. The full-scale structure was assumed to be installed in water ... -
Output-only schemes for joint input-state-parameter estimation of linear systems
(2015)The subject of predicting structural response, for control or fatigue assessment purposes, via output only vibration measurements is an emerging topic of Structural Health Monitoring. The subject of estimation of the states ... -
Particle based simulation of fluid flow in periodically grooved channels
(2016)The method of Dissipative Particle Dynamics is applied to investigate the effect of the parameters employed to model the presence of periodic rectangular wall roughness on planar nanochannel flow. The parameters considered ... -
Posterior robust optimization for design update based on measurements
(2015)A Bayesian unified framework is proposed for data-informed robust design optimization. Models of uncertainties postulated in conventional robust design optimization are treated as prior uncertainties in a Bayesian context. ... -
Recent Advances in Seismic Vulnerability Assessment of Tunnels and Underground Structures
(2022)Tunnels and underground structures are constructed at an increasing rate in seismic prone areas to facilitate expanding transportation needs. The importance of these types of structures in modern societies, as well as the ... -
RES-Q: Self-evolving Post-disaster Response Plans Utilizing Semantics
(2022)During the last decade, communities at local and national level are implementing actions geared towards improving disaster resilience. In this context, the importance of ICT in disaster risk management is rapidly increasing ... -
Seismic response of jacket wind-turbines: Dimensional analysis of foundations and SSI
(2019)The paper introduces a cost-effective and ‘easy-to-install’ foundation concept to be used for the seabed support of jacket wind-platforms. The concept, commonly termed as ‘suction caisson’ is a skirt foundation (i.e. a ... -
Study of the influence of seismic action on the construction cost of the load-bearing structure of a ten-storey R/C building
(2021)Greece is divided into three seismic hazard zones ZI, ZII, ZIII. In the present research work, the same building in the three seismic zones of Greece is modeled, analysed and dimensioned and then the construction cost of ...