Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 34 for “"Damage index"”.
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Port Infrastructure Resilience through Combined Wind-Surge Demand Characterization
… effect of waves on dockside container cranes. A damage index prediction tool that considers both maximum wind speed and storm surge height is developed and applied to historical hurricane data for effectiveness. Comparisons of the new damage index with traditional damage indices based solely on …
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Experimental Detection and Quantitative Interrogation of Damage in a Jointed Composite Structure
… with the prior implementation of a successful damage prediction method. This research utilizes a smart sensor array to collect sensing information over a variety of damaged scenarios on a composite lap-joint assembly. Damage was implemented as bolt torque loss within the joint. A damage index …
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Tropical Cyclone Risk Assessment Using Statistical Models
… synthetic TC track simulations to economic damage risk assessment, I use a Damage Index and total damage data for U.S. landfalling hurricanes and fit generalized Pareto distributions (GPD) to them. The Damage Index uniquely separates out the effects of the physical damage capacity of a TC …
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Performance-based seismic engineering of low and medium-rise steel frames
… in the designs. To evaluate the expected damage, nonlinear models of the designed frames are subjected to a number of actual and simulated ground motion accelerograms and appropriate structural response parameters such as, interstory drift, ductility demand, and dissipated hysteretic …
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Reliability Evaluation and Damage Reduction of Woodframe Buildings Under Seismic Loads
… of both maximum story drift ratio and building damage index for each of the six selected buildings, with uncertainties in both demand and capacity accounted for The adequacy of existing buildings and current design is examined in terms of building damage and the corresponding probability. The …
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Micromechanical models of delamination in aluminum-lithium alloys
… develops a multiscale model of intergranular damage that incorporates the results of the microscale CP simulations. The multiscale model represents the mechanics of microscale deformation near grain boundaries with a simplified compatibility/equilibrium method. The intergranular stresses and …
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Evidence Based Design of Heuristics: Usability and Computer Assisted Assessment
… the corpus of usability problems; the Damage Index for prioritising usability problems from multiple evaluations and the evidence based design approach to synthesise heuristics. The focus of the research evolves with the first objective being to determine If severe usability problems …
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Probabilistic seismic demand models of RC bridge columns retrofitted with shape memory alloy spirals
… drift, residual drift, an energy-based concrete damage index and a steel damage index based on low-cycle fatigue. The suitability of 8 IMs for the development of probabilistic demand models to predict the DMs is explored. The optimal IM, which predicts the DM with least uncertainty, is found to …
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Foliar response of woody ornamentals to sprinkler irrigation with reuse water
This experiment examined foliar damage associated with sprinkle irrigation of reuse water. Reuse water, municipal water and a synthesized saline water were applied via sprinkler irrigation to 20 ornamental tree species. A visual damage index was created based on canopy and leaf level …
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Inelastic seismic behavior of stiffening systems : multi-span simply-supported (MSSS) bridges
… and mass), 41 strong motion records, and several damage criteria are considered and effects of the stiffening parameters variations on the dynamic response of simple stiffening systems are presented. It is shown that on the average the displacement response is lower for stiffening systems, …
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Numerical modelling of reinforced concrete bridge pier under artificially generated earthquake time-histories
… cumulative spectrum, energy dissipation, damage index as well as probability applications are applied to quantify the structural response and damage. Based on the convergence of the representative responses under different numbers of AGETH, a minimum representative number of AGETH from 6 …
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Assessment of Infestation levels of Chilo partellus swinhoe(Lepidoptera:Crambidae)on maize and the Impact of its parasitoid cotesia flavipes cameron(Hymenoptera:braconidae)in Sinazongwe District of Zambia
… to determine the incidence of C. partellus, damage to maize plants and the abundance of its natural enemy, Cotesia flavipes. This study was carried out during the winter cropping seasons of 2005 and 2006 in four locations where previous releases of C. flavipes had been made. The locations …
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Assessment of Infestation levels of Chilo partellus swinhoe(Lepidoptera:Crambidae)on maize and the Impact of its parasitoid cotesia flavipes cameron(Hymenoptera:braconidae)in Sinazongwe District of Zambia
… to determine the incidence of C. partellus, damage to maize plants and the abundance of its natural enemy, Cotesia flavipes. This study was carried out during the winter cropping seasons of 2005 and 2006 in four locations where previous releases of C. flavipes had been made. The locations …
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Theory and Application of Joint Time-Frequency Analysis On Health Monitoring of Electric Cable and Guided-Waves Detection of Structural Corrosion
… to detect the location and extent of a corrosion damage on an aluminium plate. The experimental results illustrate that the proposed cross time-frequency analysis can detect the corrosion progression more accurately in comparison with three classical methods: damage index and zero-crossing which …
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Noncontact sensing systems and autonomous decision-making for early-age concrete
… cloud reconstruction and meshing of the joint damage, and a 3D damage quantification analysis for assessing the joint damage. The proposed CV-based joint damage analysis quantified joint damage through two newly defined indices: (i) raveling damage index (RDI) for raveling and (ii) joint damage …
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Performance of RC Bridge Columns under Cyclic Combined Loading including Torsion
… stiffness, deformation and progression of damage, and cause complex failure modes and in turn influence the overall behavior of the bridge system. This study performed experimental and analytical studies in order to investigate the performance of RC bridge columns under cyclic combined …
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Seismic behavior of circular reinforced concrete bridge columns under combined loading including torsion
… established from a semi-empirical approach. A damage-based design approach for circular RC columns under combined loads was proposed by decoupling damage index models for flexure and torsion. Experimental and analytical results showed that the progression of damage was amplified by an increase …
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Strain Energy Density and Thermodynamic Entropy as Prognostic Measures of Crack Initiation in Aluminum
… of an initiating crack and the prevention of damage, estimation of remaining useful life, schedule maintenance and to reduce costly downtimes and inspections. The research presented in this dissertation explores the cumulative plastic strain energy density and thermodynamic entropy generation …
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Sensitivity analysis and calibration of the alligator cracking model in the mechanistic-empirical pavement design guide using regional data
… calculate the number of axles to failure and the damage index. Both of which are further used to calculate the fatigue cracking in the pavement with the help of regression coefficients and calibration constants. However, as these coefficients and constants were developed using the national …
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Significance of vitamin D in systemic lupus erythematosus in Koreans
… 5월 사이에 이루어졌다. 각 군에서 채혈 당시의 연령, 키, 몸무게, body mass index (BMI)를 측정하였고, 25-hydroxyvitamin D3 [25(OH)D]를 방사면역 측정법을 이용해 측정하였다. 루푸스 환자에서 채혈 당시의 임상 양상과 검사실 검사 결과를 확인하여 systemic lupus erythematosus disease activity index (SLEDAI)와 systemic lupus international collaborative clinics/american college of …
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