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Dissertations / Theses on the topic 'Deflecting Structure'

Author: Grafiati

Published: 25 June 2021

Last updated: 29 July 2025

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1

Moss, Andrew M. "Analysis of a Gravity Hinge System for Wind Turbines." Cleveland State University / OhioLINK, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=csu1624479290234317.

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2

Cho, Myung Kyu. "Structural deflections and optical performances of lightweight mirrors." Diss., The University of Arizona, 1989. http://hdl.handle.net/10150/184875.

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A parametric design study of light weight mirror shapes with various support conditions was performed utilizing the finite element program NASTRAN. Improvements in the mirror performance were made based on the following design criteria: (1) minimization of the optical surface wavefront variations, (2) minimization of the self-weight directly related to cost of manufacturing, and (3) optimal location of support points. A pre-processor to automatically generate a finite element model for each mirror geometry was developed in order to obtain the structural deformations systematically. Additionall

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3

Chakraborty, (Sengupta) Suparna. "Application of "constant deflection contour" method to problems of dynamic response of structures." Thesis, University of North Bengal, 2002. http://hdl.handle.net/123456789/2736.

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4

Qin, Jianfeng. "Predicting Flexible Pavement Structural Response Using Falling Weight Deflectometer Deflections." Ohio University / OhioLINK, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1275612839.

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5

Le, Ngoc Thach. "Structural damage identification using static and modal flexibility-based deflections." Thesis, Queensland University of Technology, 2019. https://eprints.qut.edu.au/133428/2/Ngoc_Le_Thesis.pdf.

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This research contributes towards the safe and efficient operation of our infrastructure which are vulnerable to progressive deterioration and damage. Innovative damage detection (DD) methods are proposed herein to detect such damage at the onset to enable appropriate retrofitting and prevent structural failure. These DD methods overcome current difficulties in using popular DD methods based on changes in static and/or modal flexibility-based deflections. First, an innovative deflection-based method is proposed based on explicit relationships between static deflection change and damage charact

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6

Nayyerloo, Mostafa. "Real-time Structural Health Monitoring of Nonlinear Hysteretic Structures." Thesis, University of Canterbury. Department of Mechanical Engineering, 2011. http://hdl.handle.net/10092/6581.

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The great social and economic impact of earthquakes has made necessary the development of novel structural health monitoring (SHM) solutions for increasing the level of structural safety and assessment. SHM is the process of comparing the current state of a structure’s condition relative to a healthy baseline state to detect the existence, location, and degree of likely damage during or after a damaging input, such as an earthquake. Many SHM algorithms have been proposed in the literature. However, a large majority of these algorithms cannot be implemented in real time. Therefore, their result

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7

Manoharan, Sittampalam R. "Development of Structural Deterioration Models for Flexible Pavements in Queensland, Australia." Thesis, Griffith University, 2020. http://hdl.handle.net/10072/398093.

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The principal aim of this research study was to improve the reliability of structural performance prediction for pavement structural condition. The intention of this research was to provide accurate information upon which decisions can be made, regarding when and how a particular road network needs to be rehabilitated, and where the associated budget should be allocated. The project focused on developing structural deterioration models for flexible pavements for the Queensland road network using Traffic Speed Deflectometer (TSD) data collected over a five-years period by the Department of Tran

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8

Rockstroh, Benjamin Andreas. "An investigation into the effects of early propping removal on the deflection of reinforced concrete beams." Master's thesis, University of Cape Town, 2018. http://hdl.handle.net/11427/29285.

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In today’s fast paced construction industry, there is an ever present need to increase productivity and to complete projects as quickly as possible. Reinforced concrete is a popular and widely used construction material. However it has the unfortunate drawback in that the concrete requires time to set and gain sufficient strength before loads may be applied and the formwork and props can be removed. It is therefore desirable to keep propping times to a minimum. If the propping is removed too early, there is a risk of the member deflecting excessively and exceeding the maximum allowable limits,

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9

Chu, Kwong-Yiu. "A study of the deflection and strength of partially prestressed concrete beams with unbonded tendons." Thesis, University of Leeds, 1985. http://etheses.whiterose.ac.uk/184/.

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Fifteen beams with-unbonded tendons consisting of I and rectangular sections with different amounts of prestressed and non-prestressed reinforcement, were tested under short-term and sustained loading and a combination of sustained loading with intermittent short-term cyclic loading(combined loading). Two additional ordinary reinforced concrete beams were tested under combined loading for comparison purposes. Results indicated that a noticeable amount of non-recoverable residual deflection occurred due to the effect of cyclic load. The cause was believed to be non-recoverable creep strain and

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10

Abayakoon, Sarath Bandara Samarasinghe. "Large deflection elastic-plastic analysis of plate structures by the finite strip method." Thesis, University of British Columbia, 1987. http://hdl.handle.net/2429/26946.

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A solution procedure based on the finite strip method is presented herein, for the analysis of plate systems exhibiting geometric and material non-linearities. Special emphasis is given to the particular problem of rectangular plates with stiffeners running in a direction parallel to one side of the plate. The finite strip method is selected for the analysis as the geometry of the problem is well suited for the application of this method and also as the problem is too complicated to solve analytically. Large deflection effects are included in the present study, by taking first, order non-line

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11

Frech-Baronet, Jessy. "Multi-scale characterization and modelling of the long-term deflection of concrete structures." Doctoral thesis, Université Laval, 2020. http://hdl.handle.net/20.500.11794/66417.

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12

Liang, Anthony. "Electric deflection measurements of sodium clusters in a molecular beam." Diss., Atlanta, Ga. : Georgia Institute of Technology, 2009. http://hdl.handle.net/1853/31750.

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Thesis (Ph.D)--Physics, Georgia Institute of Technology, 2010.<br>Committee Chair: de Heer, Walter; Committee Member: Chou, Mei-Yin; Committee Member: First, Phillip; Committee Member: Whetten, Robert; Committee Member: Zangwill, Andrew. Part of the SMARTech Electronic Thesis and Dissertation Collection.

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13

Özdemir, Aytekin, Zeki Hayran, Yuzuru Takashima, and Hamza Kurt. "Polarization independent high transmission large numerical aperture laser beam focusing and deflection by dielectric Huygens’ metasurfaces." ELSEVIER SCIENCE BV, 2017. http://hdl.handle.net/10150/625955.

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In this letter, we propose all-dielectric Huygens' metasurface structures to construct high numerical aperture flat lenses and beam deflecting devices. The designed metasurface consists of two-dimensional array of all dielectric nanodisk resonators with spatially varying radii, thereby introducing judiciously designed phase shift to the propagating light. Owing to the overlap of Mie-type magnetic and electric resonances, high transmission was achieved with rigorous design analysis. The designed flat lenses have numerical aperture value of 0.85 and transmission values around 80%. It also offers

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14

Dedhia, Sanjay Z. "Study of the effect of structural variables of die on die deflections." Connect to this title online, 1997. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1102101285.

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Thesis (M.S.)--Ohio State University, 1997.<br>Advisor: Richard Allen Miller, Dept. of Mechanical Engineering. Includes bibliographical references (leaves 141-142). Available online via OhioLINK's ETD Center.

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15

Drinali, Hayat. "Full-range axisymmetric elasto-plastic large deflection of circular and annular plates under transverse, in-plane and combined loading." Thesis, Lancaster University, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.254094.

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16

Paul, Matthew G. "Wing Deflection Analysis of 3D Printed Wind Tunnel Models." DigitalCommons@CalPoly, 2017. https://digitalcommons.calpoly.edu/theses/1751.

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This work investigates the feasibility of producing small scale, low aerodynamic loading wind tunnel models, using FDM 3D printing methods, that are both structurally and aerodynamically representative in the wind tunnel. To verify the applicability of this approach, a 2.07% scale model of the NASA CRM was produced, whose wings were manufacturing using a Finite Deposition Modeling 3D printer. Experimental data was compared to numerical simulations to determine percent difference in wake distribution and wingtip deflection for multiple configurations. Numerical simulation data taken in the form

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17

Howard, Joseph Neil. "Investigation of the Structural Behavior of Asphalt/Wood Deck Systems for Girder Bridges." Thesis, Virginia Tech, 1997. http://hdl.handle.net/10919/36791.

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Glue laminated wood deck systems are commonly used for bridge decks on girder bridge systems. These decks are usually covered with a hot-mix asphalt wearing surface in conjunction with a bituminized fabric sheet waterproofing membrane. Often cracks occur in the asphalt at the intersection of two adjacent deck panels which limits the useful life of the wear surface, provides a poor riding surface and potentially allows moisture to flow to wooden bridge components. The purpose of this study was to investigate the structural behavior of asphalt/wood/membrane deck systems. This was accom

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18

Cloete, Renier. "A simplified finite element model for time-dependent deflections of flat slabs." Pretoria : [s.n.], 2005. http://upetd.up.ac.za/thesis/available/etd-05302005-123208/.

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19

Giles, Adam R. "Deflection and shape change of smart composite laminates using shape memory alloy actuators." Thesis, Loughborough University, 2005. https://dspace.lboro.ac.uk/2134/7698.

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Shape memory materials have been known for many years to possess the unique ability of memorising their shape at some temperature. If these materials are pre-strained into the plastic range, they tend to recover their original un-strained shapes via phase transformation when subjected to heat stimulation. In recent years, this shape memory effect (SME) or strain recovery capability has been explored in aerospace structures for actuating the real-time movement of structural components. Among all the shape memory materials, the nickel-titanium based shape memory alloy (SMA) has by far received t

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20

Di, Pisa Corrado. "Boundary element method for fracture mechanics analysis of thin-walled assembled structures undergoing large deflection." Thesis, Queen Mary, University of London, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.424714.

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21

Asnaashari, Erfan. "Vibration-based damage detection in structures." Thesis, University of Manchester, 2014. https://www.research.manchester.ac.uk/portal/en/theses/vibrationbased-damage-detection-in-structures(09061582-55fb-4fba-846e-2156dd4ef172).html.

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Structural health monitoring systems have a great potential for cost saving and safety improvement in different types of structures. One of the most important tasks of these systems is to identify damage at an early stage of its development. A variety of methods may be used to identify, locate, or quantify the extent of damage or fault in a structural or mechanical component. However, the preferable method is the one which maximises the probability of detecting the flaw, while also considering feasibility of in-situ testing, ease of use and economic factors. Cracks are one of the common defect

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22

Choi, JungHun. "Design and Development of a Minimally Invasive Endoscope: Highly Flexible Stem with Large Deflection and Stiffenable Exoskeleton Structure." Diss., Virginia Tech, 2006. http://hdl.handle.net/10919/26218.

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Colonoscopy provides a minimally invasive tool for examining and treating the colon without surgery, but current endoscope designs still cause a degree of pain and injury to the colon wall. The most common colonoscopies are long tubes inserted through the rectum, with locomotion actuators, fiber optic lights, cameras, and biopsy tools on the distal end. The stiffness required to support these tools makes it difficult for the scopes to navigate the twisted path of the colon without damaging the inside wall of the colon or distorting its shape. In addition, little is known about how sharp and fo

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23

Kim, Taehyoun 1959. "Nonlinear large amplitude structural and aeroelastic behavior of composite rotor blades at large static deflection." Thesis, Massachusetts Institute of Technology, 1992. http://hdl.handle.net/1721.1/43251.

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24

Shrestha, Shivesh. "Development of structural condition thresholds for TSD measurements." Thesis, Virginia Tech, 2017. http://hdl.handle.net/10919/78039.

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This thesis presents (a) results of a field evaluation of the Traffic Speed Deflectometer (TSD) in the United States (b) deflection thresholds to classify the pavement structural condition obtained from the TSD for a small subset of the Pennsylvania secondary road network. The results of the field evaluation included: (1) repeatability of the TSD, (2) ability of the TSD to identify pavement sections with varying structural conditions, and (3) consistency between the structural number (SNeff) calculated from the TSD and SNeff calculated by the Pennsylvania Department of Transportation (PennDOT)

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25

Lee, Seung Joon. "Nonlinear analysis of smart composite plate and shell structures." Diss., Texas A&M University, 2003. http://hdl.handle.net/1969.1/2218.

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Theoretical formulations, analytical solutions, and finite element solutions for laminated composite plate and shell structures with smart material laminae are presented in the study. A unified third-order shear deformation theory is formulated and used to study vibration/deflection suppression characteristics of plate and shell structures. The von K??rm??n type geometric nonlinearity is included in the formulation. Third-order shear deformation theory based on Donnell and Sanders nonlinear shell theories is chosen for the shell formulation. The smart material used in this study to achieve d

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26

Le, Boursicaud Vinciane. "Nouvelles utilisations des mesures de bassins de déflexion pour caractériser l’état structurel des chaussées." Thesis, Ecole centrale de Nantes, 2018. http://www.theses.fr/2018ECDN0036/document.

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L’évaluation des caractéristiques structurelles des chaussées permet l’optimisation de leur maintenance. La mesure de déflexion est une mesure de base de cette évaluation. Aujourd’hui,seuls la déflexion maximale et le rayon de courbures ont analysés. Pourtant, le curviamètre et le déflectographe relèvent le bassin de déflexion complet dont l’analyse permettrait d’extraire des paramètres plus sensibles à l’endommagement des chaussées. Actuellement, l’interprétation des mesures est seulement qualitative et aucun calcul inverse de l’état de dommage de la structure n’est réalisé. La thèse vise à a

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27

Jacobucci, Cody. "Automating structural stress analysis : beam deflection, shear, and moment diagram generator for single and multi-span beams." Thesis, Massachusetts Institute of Technology, 2017. http://hdl.handle.net/1721.1/112575.

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Thesis: S.B., Massachusetts Institute of Technology, Department of Mechanical Engineering, 2017.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (page 87).<br>A new tool has been developed with Aurora Flight Sciences to automate stress analysis of beams under loading. It is a Microsoft Excel based tool to be consistent with Aurora's other analysis tools and analyst preference, and is coded in Visual Basic. The tool can generate the shear, moment, and deflection diagram of a single span or multi-span beam in less than 10 seconds for any combination of edge constr

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28

Bliuc, Radu Aerospace Civil &amp Mechanical Engineering Australian Defence Force Academy UNSW. "Particularities of the structural behaviour of reinforced high strength concrete slabs." Awarded by:University of New South Wales - Australian Defence Force Academy. School of Aerospace, Civil and Mechanical Engineering, 2004. http://handle.unsw.edu.au/1959.4/38749.

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The introduction of high strength concrete in construction demanded an assessment of the current methods of structural design. In the case of the slabs, the benefits brought about by concretes of higher strength could translate into design of slender sections. Theoretically these sections could be prone to excessive deflections. The flexural behaviour of such structural elements should be carefully assessed. The present thesis addresses a series of particular issues such as deflection at service loads, crack formation and development of tension stiffening and ductility. An experimental progra

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29

Centelles, Soler Xavier. "Structural glass in buildings: study of the deflection, durability, and breakage of laminated glass elements and polymeric interlayers." Doctoral thesis, Universitat de Lleida, 2020. http://hdl.handle.net/10803/671405.

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Aquesta tesi doctoral avalua el comportament estructural del vidre laminat mitjançant la recerca bibliogràfica, assajos experimentals i simulacions. Alguns dels assajos experimentals duts a terme es centren en lˇestudi de les deformacions abans de la ruptura inicial del vidre, mentre que en altres sˇassoleix la ruptura per tal dˇavaluar la seguretat port-ruptura. A més a més, es fa especial èmfasi en el material intercalari que uneix les làmines de vidre entre elles, per la seva importància en el comportament global del vidre laminat. Els resultats mostren com, malgrat que el vidre és fràgil,

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30

Burokas, Tomas. "Superplačiajuosčių lėtinimo ir kreipimo sistemų modeliavimas ir analizė." Doctoral thesis, Lithuanian Academic Libraries Network (LABT), 2006. http://vddb.library.lt/obj/LT-eLABa-0001:E.02~2006~D_20060627_083354-45290.

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Aim and tasks of the work. The aim of this work is to investigate insufficiently analyzed variants of the electrodynamic super-wide-band slow-wave structures, create their models, improve methods of analysis, analyze properties of the systems and reveal potentiality of the traveling-wave cathode-ray tubes, slow-wave structures. In order to achieve the aim it is necessary: 1. To improve method for evaluation of non-linear distortions in the traveling-wave cathode-ray tubes and reveal possibilities of reduction of non-linear distortions. 2. To create models of the insufficiently analyzed variant

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31

Yousof, Mohamad. "Analytical Model for Lateral Deflection in Cold-formed Steel Framed Shear Walls with Steel Sheathing." Thesis, University of North Texas, 2014. https://digital.library.unt.edu/ark:/67531/metadc700013/.

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An analytical model for lateral deflection in cold-formed steel shear walls sheathed with steel is developed in this research. The model is based on the four factors: fastener displacement, steel sheet deformation, and hold-down deformation, which are from the effective strip concept and a complexity factor, which accounts for the additional influential factors not considered in the previous three terms. The model uses design equations based on the actual material and mechanical properties of the shear wall. Furthermore, the model accounts for aggressive and conservative designers by predictin

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32

Kong, Hye-Eun. "Design of One-Story Hollow Structural Section (HSS) Columns Subjected to Large Seismic Drift." Thesis, Virginia Tech, 2019. http://hdl.handle.net/10919/94024.

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During an earthquake, columns in a one-story building must support vertical gravity loads while undergoing large lateral drifts associated with deflections of the vertical seismic force resisting system and deflections of the flexible roof diaphragm. Analyzing the behavior of these gravity columns is complex since not only is there an interaction between compression and bending, but also the boundary conditions are not perfectly pinned or fixed. In this research, the behavior of steel columns that are square hollow structural sections (HSS) is investigated for stability using three design me

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33

Hvozdenský, Petr. "KVANTIFIKACE A ZVYŠOVÁNÍ PŘESNOSTI MĚŘENÍ PRŮHYBU MOSTŮ." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2008. http://www.nusl.cz/ntk/nusl-227914.

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This thesis deal with improvement in bridge precision measurment deflection for Mostní a silniční Ltd. Its goal is through analysis of process of measurment and factor location, which have fundamental influence on measurment precision. First, theoretic part, represents the company, formulates problems and goals of thesis, history of bridges, world disasters, sort of bridges measurments, bridges evaluation and questions of giant transportation. In second, practical part, problems with measurment and its evaluation are described. Results are evaluated and corrective measures and recommendation a

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34

Prakash, Shruthi. "Nonlinear Finite Element Analysis of Shrinking Reinforced Concrete Slabs-on-ground." Thesis, KTH, Betongbyggnad, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-231361.

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Concrete slabs-on-ground are commonly used in many types of industrial floors, warehouses, highways, parking lots and buildings. Cracks and deflection of slabs are undesired events caused by differential shrinkage, which limits the service life of the slabs. Non-linear behavior of cracks and deflections, interaction of concrete and reinforcement increase the complexity in predicting the occurrence and positioning of cracks. The Eurocode 2 provides a reference for theoretical approximation for design of concrete structures. This thesis intent to investigate the crack behavior of slabs-on-ground

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35

Koyyapu, Naresh Kumar. "Numerical Computation of Transient Response of 2D Wedge Impact." ScholarWorks@UNO, 2016. http://scholarworks.uno.edu/td/2260.

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The diverse applications of advanced marine craft ascribed to their high speed and technological advancements has led to the use of stronger and lighter metals in such crafts. High speed, in effect also increases slamming loads as higher speed increases frequency of wave encounter while operating in waves. The present study is limited to wedge impact models. Fundamentally, the study is thus about two-dimensional (2D) wedge impact in water. In an attempt to predict the structural response to impact hydrodynamic force, a beam element based finite element (FE) computer program is written and the

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36

Sajedi, Siavash. "RELIABILITY-BASED DESIGN OPTIMIZATION OF CORROSION MANAGEMENT STRATEGIES FOR REINFORCED CONCRETE STRUCTURES." University of Akron / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=akron1503333406583485.

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37

King, Gerald D. 1974. "Presentation and comparision of an exact structural analysis code with the MIT design method and the coupled wall approximate deflection analysis procedure." Thesis, Massachusetts Institute of Technology, 1998. http://hdl.handle.net/1721.1/49986.

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38

Ho, Qhinhon D. "An Assessment Of The Accuracy Of The Euler-Bernoulli Beam Theory For Calculating Strain and Deflection in Composite Sandwich Beams." ScholarWorks@UNO, 2015. http://scholarworks.uno.edu/td/2084.

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This study focuses on assessing the accuracy of the Euler-Bernoulli beam theory as computational bases to calculate strain and deflection of composite sandwich beam subjected to three-point and four-point bending. Two groups of composite sandwich beams tests results will be used for comparison purposes. Mechanical properties for the laminated skin are provided by researchers from University of Mississippi (Ellen Lackey et al., 2000). Mechanical properties for the balsa wood core are provided by Alcan Baltek Corporation. Appropriate material properties and test geometries are then used in the E

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Yuan, Zeng. "Advanced Analysis of Steel Frame Structures Subjected to Lateral Torsional Buckling Effects." Thesis, Queensland University of Technology, 2004. https://eprints.qut.edu.au/15980/1/Zeng_Yuan_Thesis.pdf.

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The current design procedure for steel frame structures is a two-step process including an elastic analysis to determine design actions and a separate member capacity check. This design procedure is unable to trace the full range of load-deflection response and hence the failure modes of the frame structures can not be accurately predicted. In recent years, the development of advanced analysis methods has aimed at solving this problem by combining the analysis and design tasks into one step. Application of the new advanced analysis methods permits a comprehensive assessment of the actual fai

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Yuan, Zeng. "Advanced Analysis of Steel Frame Structures Subjected to Lateral Torsional Buckling Effects." Queensland University of Technology, 2004. http://eprints.qut.edu.au/15980/.

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The current design procedure for steel frame structures is a two-step process including an elastic analysis to determine design actions and a separate member capacity check. This design procedure is unable to trace the full range of load-deflection response and hence the failure modes of the frame structures can not be accurately predicted. In recent years, the development of advanced analysis methods has aimed at solving this problem by combining the analysis and design tasks into one step. Application of the new advanced analysis methods permits a comprehensive assessment of the actual fai

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41

Yamin, Moh'd. "LANDSLIDE STABILIZATION USING A SINGLE ROW OF ROCK-SOCKETED DRILLED SHAFTS AND ANALYSIS OF LATERALLY LOADED DRILLED SHAFTS USING SHAFT DEFLECTION DATA." University of Akron / OhioLINK, 2007. http://rave.ohiolink.edu/etdc/view?acc_num=akron1196960547.

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42

Ganesan, Vaahini. "A study of Compressive Sensing for application to Structural Health Monitoring." Master's thesis, University of Central Florida, 2014. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/6275.

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One of the key areas that have attracted attention in the construction industry today is Structural Health Monitoring, more commonly known as SHM. It is a concept developed to monitor the quality and longevity of various engineering structures. The incorporation of such a system would help to continuously track health of the structure, indicate the occurrence/presence of any damage in real time and give us an idea of the number of useful years for the same. Being a recently conceived idea, the state of the art technique in the field is straight forward - populating a given structure with senso

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43

Kollárik, Adrián. "Monolitická železobetonová nádrž." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2020. http://www.nusl.cz/ntk/nusl-409794.

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The thesis deals with design and assessment of all supporting parts of cast-in-place reinforced concrete tank. The thesis includes a technical report, static analysis, drawing documentations, construction proces and visualization. The drawing documentation consists of shape and reinforcement drawings of supporting parts.

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Kalluru, Mallikarjun. "One-way Coupled Hydroelastic Analysis of Aluminum Wedge Under Slamming." ScholarWorks@UNO, 2017. https://scholarworks.uno.edu/td/2414.

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The concept of using aluminum as the primary construction material for high speed ships and the hydroelastic behavior of the structure is widely gaining importance as a significant research topic in naval architecture. Aluminum is lighter than steel and hence can be predominantly used in high speed crafts which experiences significant slamming. This thesis work is focused on wedge shaped models. Free fall wedge impact is studied and a FORTRAN 90 computer program is developed to estimate the structural response of the wedge experiencing slamming by the use of matrix methods, finite element tech

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45

Tarazaga, Pablo Alberto. "Dynamics and Control of a Pressurized Optical Membranes." Diss., Virginia Tech, 2009. http://hdl.handle.net/10919/28727.

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Optical membranes are currently pursued for their ability to replace the conventional mirrors that are used to correct wave front aberration and space-based telescopes. Among some of the many benefits of using optical membranes, is their ability to considerably reduce the weight of the structure. As a secondary effect, the cost of transportation, which is of great interest in space applications, is reduced as well. Given the low density of these thin-film membranes, the lower end dynamics play a greater significant role than their rigid plate-like counterparts in achieving functional mirrors

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46

Neely, William Douglas. "Evaluation of the In-Servic Performance of the Tom's Creek Bridge." Thesis, Virginia Tech, 2000. http://hdl.handle.net/10919/33249.

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The Tom's Creek Bridge is a small-scale demonstration project involving the use of fiber-reinforced polymer (FRP) composite girders as the main load carrying members. The project is intended to serve two purposes. First, by calculating bridge design parameters such as the dynamic load allowance, transverse wheel load distribution and deflections under service loading, the Tom's Creek Bridge will aid in modifying current AASHTO bridge design standards for use with FRP composite materials. Second, by evaluating the FRP girders after being exposed to service conditions, the project will begin

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Elgabbas, Fareed Mahmoud. "Development and structural testing of new basalt fiber-reinforced-polymer (BFRP) bars in RC beams and bridge-deck slabs." Thèse, Université de Sherbrooke, 2016. http://hdl.handle.net/11143/8734.

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L'avancée de la technologie des PRF a suscité l'intérêt de l'introduction de nouvelles fibres, comme la fibre de basalte, qui a un potentiel d'offrir une solution efficace, lorsqu’utilisée dans les structures en béton, soit sur la résistance à la corrosion, la durabilité et la rentabilité. En outre, les codes et les guides disponibles, ne fournissent pas de recommandations pour l'utilisation de barres en PRFB puisque les recherches passées dans ce domaine sont limitées. Donc, des travaux de recherche sont nécessaires pour caractériser et comprendre le comportement des barres de PRFB dans les é

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Restrepo, Edgar Salom. "Determination of AASHTO Bridge Design Parameters through Field Evaluation of the Rt. 601 Bridge: A Bridge Utilizing Strongwell 36 in. Fiber-Reinforced Polymer Double Web Beams as the Main Load Carrying Members." Thesis, Virginia Tech, 2002. http://hdl.handle.net/10919/36182.

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The Route 601 Bridge in Sugar Grove, Virginia spans 39 ft over Dickey Creek. The Bridge is the first to use the Strongwell 36 in. fiber reinforced polymer (FRP) double web beam (DWB) in its superstructure. Replacement of the old bridge began in June 2001, and construction of the new bridge was completed in October 2001. The bridge was field tested in October 2001 and June 2002. This thesis details the field evaluation of the Rt. 601 Bridge. Using mid span deflection and strain data from the October 2001 and June 2002 field tests, the primary goal of this research was to determine the fo

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Gustavsson, Victor, and Hagenius Fabian. "En kapacitetsjämförelse mellan stålförstärktaträbalkar, limträ och konstruktionsvirke." Thesis, Tekniska Högskolan, Högskolan i Jönköping, JTH, Byggnadsteknik och belysningsvetenskap, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-45418.

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Purpose: Throughout the years numerous studies have been made that concludes thatcombining steel and wood results in improved strength. Under optimal conditions woodis an effective structural material, as it’s both cheap and durable. Steel on the other handunder right circumstances has considerably higher strength than wood. To combinewood and steel has over the last years gathered more attention. Studies shows thathybrid structures can lead to an economical advantage when building multiple storeybuildings, as it can replace or complete pure steel frames. The purpose of this paper isto increas

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Nassiri, Esmail. "Modelling nonlinear behaviour of two-dimensional steel structures subjected to cyclic loading." Thesis, Queensland University of Technology, 1998.

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