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Rozprawy doktorskie na temat „Composite construction”

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Autor: Grafiati

Data publikacji: 4 czerwca 2021

Data aktualizacji: 29 lipca 2024

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1

Chesshire, Geoffrey Samuel Kreiss H. "Composite grid construction and applications /". Diss., Pasadena, Calif. : California Institute of Technology, 1986. http://resolver.caltech.edu/CaltechETD:etd-03242008-145553.

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Do, Nascimento Oliveira Jose Emidio. "Deformation and damage analysis of composite beams equipped with polyvinylidene fluoride film sensors /". [S.l. : s.n.], 2008. http://dk.cput.ac.za/cgi/viewcontent.cgi?article=1001&context=td_cput.

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3

Essawy, Mahmoud Ibrahim. "Shear-bond in profiled composite construction". Thesis, University of Strathclyde, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.360793.

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4

Oehlers, Deric John. "Mechanisms in composite structures /". Title page, abstract and table of contents only, 2004. http://web4.library.adelaide.edu.au/theses/09END/09endo285.pdf.

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5

Valente, Evandro Gurgel do Amaral. "Composite construction of an unmanned aerial vehicle". College Park, Md. : University of Maryland, 2006. http://hdl.handle.net/1903/3930.

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Thesis (M.S.) -- University of Maryland, College Park, 2006.
Thesis research directed by: Dept. of Aerospace Engineering. Title from t.p. of PDF. Includes bibliographical references. Published by UMI Dissertation Services, Ann Arbor, Mich. Also available in paper.

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6

Steele, John Phillip. "Composite RCS frame systems: construction and peformance". Thesis, Texas A&M University, 2003. http://hdl.handle.net/1969.1/181.

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The objective of this research program is to further evaluate the performance and constructability of reinforced concrete (RC) column-steel beam-slab systems (RCS) for use in low- to mid-rise space frame buildings located in regions of high wind loads and/or moderate seismicity. To better understand these systems, two full scale RCS cruciform specimens were tested under bidirectional quasi-static reversed cyclic loading. The experimental portion of this research program included the construction and testing of two full-scale cruciform specimens with identical overall dimensions but with different joint detailing. The two joint details evaluated were joint cover plates and face bearing plates with localized transverse ties. The construction process was recorded in detail and related to actual field construction practices. The specimens were tested experimentally in quasi-static reversed cyclic loading in both orthogonal loading directions while a constant axial force was applied to the column, to simulate the wind loads in a subassembly of a prototype building. To compliment the experimental work, nonlinear analyses were performed to evaluate the specimen strength and hysteretic degradation parameters for RCS systems. In addition, current recommendations in the literature on the design of RCS joints were used to estimate specimen joint strength and were compared with the experimental findings.

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7

Mayer, Anthony Edward. "Composite construction of high performance scientific applications". Thesis, Imperial College London, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.252520.

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8

VALLENILLA, SOLORZANO CESAR RAFAEL. "STRENGTH AND BEHAVIOR OF COMPOSITE FRAMING SYSTEMS". Diss., The University of Arizona, 1987. http://hdl.handle.net/10150/184121.

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An investigation of the behavior of multistory composite frames is presented. The investigation includes a review of the state-of-the-art of composite frame analysis and design methods, and also details the features of the response of composite frames during the construction phase. In an original development, solution procedures that incorporate the effects of construction sequencing on the strength and stability of composite frames are developed. This is extended to define the new concept of a construction limit state for use in design of such structures. These procedures are intended for use by designers and contractors as guidelines. In order to achieve a certain quality of construction, the builder must comply with a set of specific erection sequences. These sequences may vary from one structure to another, depending on a number of factors. Although general standards of construction that include the effects of sequencing do not exist, and would likely be very difficult to develop, it is clear that designers and contractors must consider the influences. From the viewpoint of economy and efficiency, it is necessary to specify sequences that satisfy the structural behavior and stability requirements. The primary purpose of this study is the development of a numerical procedure for the determination of the behavior of composite frames during erection. A second objective is that the procedure developed will be such that it would lend itself to improved construction economy by taking into account the effects of construction sequencing. It will be demonstrated that simple calculations of construction sequencing, together with the given frame response, may be used by the contractor during erection to establish the different activities required for the erection of a building frame.

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9

Chin, Shaoan. "MOS-bipolar composite power switching devices". Diss., Virginia Polytechnic Institute and State University, 1985. http://hdl.handle.net/10919/54275.

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Two MOS-Bipolar composite power semiconductor switching devices are proposed and experimentally demonstrated. These devices feature high voltage and high current capabilities, fast switching speeds, simple gate drive requirements, savings in chip area, reverse bias second breakdown ruggedness and large safe operating areas. Application characteristics of the devices for high frequency power inverter circuits are discussed. Monolithic integration of the two composite devices are also proposed.
Ph. D.

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10

Tschetter, Steven James. "A parameter study of cost versus material and serviceability variables in unshored non-composite and composite floor systems". Master's thesis, This resource online, 1994. http://scholar.lib.vt.edu/theses/available/etd-02022010-020155/.

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11

Sellars, Angela R. "The effects of typical construction details on the strength of composite slabs". Thesis, This resource online, 1994. http://scholar.lib.vt.edu/theses/available/etd-07112009-040424/.

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12

Navarro, Cota Juan Pedro Martin 1963. "DESIGN AND BEHAVIOR OF COMPOSITE SPACE TRUSSES". Thesis, The University of Arizona, 1987. http://hdl.handle.net/10150/276505.

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A fully automated computer program is developed for the optimum design of steel space trusses acting compositely with a concrete slab placed on top. The program sizes the truss members to meet the requirements of the load and resistance factor design specification of the American Institute of Steel Construction using the load combinations of ANSI. Earthquake loading is not considered. The optimum size is based on minimum cost, regarding the amount of welding required at the joints and of the member itself. The total cost is based on all steel work in the truss. Once the truss configuration has been defined, and it has been ensured that linear elastic behavior exists, the structure is analyzed for the construction process, to make sure that no overstressing will take place in any structural element at any time during construction and service. The analysis and design principles are presented and an actual design case is solved. (Abstract shortened with permission of author.)

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13

Kong, Yow Wai. "Computer aided design of composite beams". Thesis, McGill University, 1985. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=63364.

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14

Hu, Bo. "Bio-based composite sandwich panel for residential construction". Access to citation, abstract and download form provided by ProQuest Information and Learning Company; downloadable PDF file 5.24 Mb., 265 p, 2006. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&res_dat=xri:pqdiss&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&rft_dat=xri:pqdiss:3221055.

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15

Slade, R. "Composite faced sandwich construction for primary spacecraft structures". Thesis, Cranfield University, 1989. http://hdl.handle.net/1826/3827.

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This study investigated the application of fibre reinforced composite materials to spacecraft sandwich structures. In particular, aspects of the manufacture, analysis and design optimisation of components fabricated using the co-cure process were studied. The manufacturing process was developed to ultimately enable a full size thrust tube structure to be built using a single step cure, the design of which was verified by a modal survey test. Techniques for the analysis of stiffness, strength., vibration frequencies and local instability were established and found to correlate well with tests on co-cured sandwich specimens. The current wrinkling theory for composite faced sandwich was extended to the more general case to allow facesheet constitutive matrix coupling and multiaxial loding to be accomodated. The analytical methods were incorporated within simple optimisation schemes, amenable to employment at the preliminary design stage, to allow alternative feasible designs for panel and thrust tube structures to be generated. These illustrated the benefits of the use of composite materials and the co-cure manufacturing technique for spacecraft sandwich components.

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16

El-Badawy, Anwar Ahmed. "Composite construction for buried structures subject to impact". Thesis, University of Strathclyde, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.273346.

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17

Hall, Terianne C. "Use of composite environmental indicators in residential construction". Thesis, Massachusetts Institute of Technology, 2008. http://hdl.handle.net/1721.1/43011.

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Thesis (S.B.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2008.
Includes bibliographical references (p. 33-34).
As a result of the damage caused by hurricane Katrina in August 2005, fifty percent of New Orleans residential housing was destroyed or severely damaged. A systems model is being developed at MIT for promoting resource efficient housing in New Orleans. The model attempts to capture the urban metabolism of the city by tracking the material and energy flows required of various possible reconstruction scenarios. The model is meant to act as a tool for policy makers to identify the most effective construction methods for a green city. Currently, the model is programmed to provide output values for material use, energy consumption and labor hours during the construction, use, and end-of-life phases of portions of the city's housing stock. While these quantitative results are useful for specialists to understand a given scenario, they are not useful for policy makers. My thesis project will focus on comparing the merits and drawbacks of applying various standard indicators to New Orleans construction methods. This includes, but is not limited to, Gross Domestic Product per capita and Species Diversity. Next, my work with this project will focus on assessing existing composite indicators based on their relevance to the model and their usability by policy makers. Understanding the merits and downfalls of various composite indicators will allow policy makers to choose an appropriate metric for comparing construction option, and make informed decisions about incentive programs for the various stages of reconstruction in New Orleans. It is the intention of the project to find indicators that can be generalized for use in other locations in conjunction with future models of urban metabolism yet to be developed.
by Terianne C. Hall.
S.B.

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18

Dorosh, Mark Norman. "Damage growth in bending of composite beams". Thesis, University of British Columbia, 1988. http://hdl.handle.net/2429/28376.

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A study has been made of glass fibre reinforced plastic beams in three-point bending. In recent years, the importance of flexural loading in composites has manifested itself in the form of composite leaf springs, helicopter rotors, and other applications. This study is directed at the initiation, growth, characterization and measurement of damage in unidirectional and cross-ply composite beams. Beams were tested in three-point static and cyclic bending. Following damage initiation, either by a machined notch or by repeated cycling, damage growth has been characterized by two damage parameters: a damage depth encompassing a number of broken fibres on the tensile surface at the central load point, and a damage length or delamination parallel to the beam longitudinal axis. A model was developed to predict the compliance, or deflection under applied load, as a function of beam properties and damage dimensions. The model is able to predict the compliance of damaged beams with reasonable accuracy. From fracture mechanics concepts it is shown that the two damage dimensions, depth and length, are related. It is concluded that the increase in compliance, a result of the growing damage dimensions, is related to the growth of the damage depth; the damage length follows from the relation between damage parameters and the compliance follows from the compliance model. The damage state can thus be determined by compliance measurements if the relevant material properties and loading conditions are known. However, in service, compliance measurements may not be practical. Therefore a section of this study is devoted to an alternative damage measurement technique, namely acoustic emission monitoring. Damage initiation, compliance, damage length and damage depth were measured with AE monitoring techniques.
Applied Science, Faculty of
Materials Engineering, Department of
Graduate

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19

Abdelnaser, Ahmad Shehadeh. "Random vibrations of composite beams and plates /". This resource online, 1993. http://scholar.lib.vt.edu/theses/available/etd-05042006-164514/.

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20

Starbuck, J. Michael. "Damage states in laminated composite three-point bend specimens - an experimental/analytical correlation study". Diss., This resource online, 1990. http://scholar.lib.vt.edu/theses/available/etd-08082007-114323/.

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21

Kuemmerle, Daniel Lange. "Strengthening of concrete bridge decks using carbon-based composite materials". Thesis, Georgia Institute of Technology, 1999. http://hdl.handle.net/1853/20694.

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22

Dhar, Vikas B. "A simple finite element for the dynamic analysis of rotating composite beams". Thesis, This resource online, 1990. http://scholar.lib.vt.edu/theses/available/etd-05022009-040512/.

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23

Song, Ohseop. "Modeling and response analysis of thin-walled beam structures constructed of advanced composite materials". Diss., This resource online, 1990. http://scholar.lib.vt.edu/theses/available/etd-07282008-135316/.

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24

Yu, Zhaohui Crocker Malcolm J. "Static, dynamic and acoustical properties of sandwich composite materials". Auburn, Ala., 2007. http://repo.lib.auburn.edu/2006%20Fall/Dissertations/YU_ZHAOHUI_54.pdf.

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25

LeBlanc, David N. "Beam shear connections to HSS composite columns". Thesis, McGill University, 1985. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=63273.

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26

Vaidya, Amol S. "Lightweight composites for modular panelized construction". Birmingham, Ala. : University of Alabama at Birmingham, 2009. https://www.mhsl.uab.edu/dt/2009r/vaidya.pdf.

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Thesis (Ph. D.)--University of Alabama at Birmingham, 2009.
Title from PDF title page (viewed Feb. 8, 2010). Additional advisors: Uday Vaidya, Talat Salama, Wilbur Hitchcock, Ashraf Z. Al-Hamdan. Includes bibliographical references (p. 144-155).

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27

do, Nascimento Oliveira Jose Emidio. "Deformation and damage analysis of composite beams equipped with polyvinylidene fluoride film sensors". Thesis, Cape Peninsula University of Technology, 2008. http://hdl.handle.net/20.500.11838/1284.

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In many engineering applications, it is desirable to know the behaviour of structures and systems under loading conditions. One reason is to help optimize the design and prevent damage and failure which might occur during in service and operation. Damage represents a serious problem which can cause catastrophic failure of structures, machines and systems. Therefore for safe operation, efficient and reliable methods for inspection and monitoring of damage are required. Different methods for health monitoring of structures such as non destructive testing (NDT) and strain gauges are widely used. These methods have proven to be efficient in terms of resolution and response. However, some disadvantages associated with them include the vicinity of the area under inspection which must be well known, equipment to acquire the necessary information is expensive and in many cases high skills are required for operation. On the other hand, advances in materials science and MEMS systems has promoted the use of new materials with piezoelectric properties. This include mainly polymeric and ceramic materials which after processed can be used for structural health monitoring. These materials offer a number of advantages such as lightweight, sensitivity, toughness, durability, and low cost. The present research work investigates the feasibility of using a polymeric material, Polyvinylidene Fluoride (PVDF) as a sensor for deformation and defect detection in structures. The sensors are embedded in composite cantilevered type beams to detect defects at distinct locations along the beam’s length. The defect detection method proposed is based on experimental tests and Finite Element simulations. Experimental tests on defect free and beams with manufactured internal flaws were conducted. Numerical (FEM) simulations of defect free and flawed beam models containing sections of reduced elastic modulus to represent the damage were conducted using ANSYS software. The experimental tests have been used for the validation of the numerical solution. Results have shown that the defect location changes the stiffness and indeed the frequency of vibration. For flaws near the fixed end of the beams, lower frequencies are obtained as compared to flaws away from the fixed end. PVDF sensors were used to acquire the natural frequencies of the beams for the first mode of vibration. Good agreement was verified between experimental and numerical simulation results. The work has demonstrated that PVDF film sensors can be used as possible candidates for defect detection. The analysis of the behaviour embedded PVDF sensors near the fixed end of cantilever beams, represents an initial and important step towards the application of measuring static and dynamic behaviour of structures as part of a health monitoring process.

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28

Le, Riche Rodolphe. "Optimization of composite structures by genetic algorithms". Diss., This resource online, 1994. http://scholar.lib.vt.edu/theses/available/etd-06062008-164513/.

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29

MOUSSA, ALBERT ELIAS. "EFFECTIVE WIDTH AND ULTIMATE STRENGTH OF CONTINUOUS COMPOSITE BEAMS". Diss., The University of Arizona, 1987. http://hdl.handle.net/10150/184084.

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The primary objective of this study has been to examine the behavior of continuous composite beams. The investigation has been based on a nonlinear analysis of 15 composite floor systems. New design criteria have been proposed to calculate the effective width at mid-span and supports, at yield and at ultimate loads. New design equations have been developed to calculate the ultimate strength of a composite section in both positive and negative moment regions. Ductility and deflection characteristics have been studied and equations are proposed to calculate the deflection at service load.

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30

Chandrasekaran, Ganesh. "Dynamic analysis of a composite moving beam". Morgantown, W. Va. : [West Virginia University Libraries], 2000. http://etd.wvu.edu/templates/showETD.cfm?recnum=1526.

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Thesis (M.S.)--West Virginia University, 2000.
Title from document title page. Document formatted into pages; contains xi, 159 p. : ill. Includes abstract. Includes bibliographical references (p. 156-159).

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31

Stewart, Ian James. "The dynamic behaviour of discretely connected composite construction elements". Thesis, University of Strathclyde, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.405324.

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32

Nhamoinesu, Shelton. "Steel-glass composite panels". Thesis, University of Cambridge, 2015. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.708845.

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33

Hopkinson, David P. "Development of stress gradient enhanced piezoelectric composite unimorph actuators". Thesis, Georgia Institute of Technology, 2003. http://hdl.handle.net/1853/16372.

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34

Gendron, Guy. "Optimal design of geodesically stiffened composite cylindrical shells". Diss., This resource online, 1991. http://scholar.lib.vt.edu/theses/available/etd-07282008-134754/.

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35

Kenik, Douglas J. "Advanced techniques for constituent-based progressive failure analysis of composite structures". Laramie, Wyo. : University of Wyoming, 2009. http://proquest.umi.com/pqdweb?did=1939245921&sid=1&Fmt=2&clientId=18949&RQT=309&VName=PQD.

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36

Makeev, Andrew. "Geometrically nonlinear analysis of laminated composites with extension-twist coupling". Diss., Georgia Institute of Technology, 1997. http://hdl.handle.net/1853/12028.

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37

Lestari, Wahyu. "Damage of composite structures : detection technique, dynamic response and residual strength". Diss., Georgia Institute of Technology, 2001. http://hdl.handle.net/1853/12072.

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38

Akshantala, Nagendra Prasad V. "Damage modeling for durability of composites". Diss., Georgia Institute of Technology, 1997. http://hdl.handle.net/1853/15359.

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39

Nagappan, Govindan. "Analysis of composite moving beams using higher order shear deformation theory". Morgantown, W. Va. : [West Virginia University Libraries], 2004. https://etd.wvu.edu/etd/controller.jsp?moduleName=documentdata&jsp%5FetdId=3463.

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Thesis (M.S.)--West Virginia University, 2004.
Title from document title page. Document formatted into pages; contains xi, 126 p. : ill. Includes abstract. Includes bibliographical references (p. 123-126).

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40

Ritter, William Joseph. "Application of energy methods to modeling failures in composite materials and structures". Thesis, Montana State University, 2004. http://etd.lib.montana.edu/etd/2004/ritter/RitterW0805.pdf.

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41

Gummadi, Lakshmana Nagesh Babu. "Active control of delaminations in smart composite structures". Diss., Georgia Institute of Technology, 1992. http://hdl.handle.net/1853/13022.

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42

Kim, Inn B. "Development and analysis of elastically tailored composite star shaped beam sections". Diss., Available online, Georgia Institute of Technology, 2004:, 2003. http://etd.gatech.edu/theses/available/etd-04062004-164703/unrestricted/kim%5Finn%5Fb%5F200312%5Fphd.pdf.

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43

Mason, Brian H. "Analysis and design of composite curved frames". Thesis, This resource online, 1994. http://scholar.lib.vt.edu/theses/available/etd-06102009-063304/.

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44

Radice, Joshua J. "The analysis and design of adhesively bonded composite structures". Access to citation, abstract and download form provided by ProQuest Information and Learning Company; downloadable PDF file 1.10Mb , 279 p, 2005. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&res_dat=xri:pqdiss&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&rft_dat=xri:pqdiss:3181889.

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45

Denli, Huseyin. "Structural-acoustic optimization of composite sandwich structures". Access to citation, abstract and download form provided by ProQuest Information and Learning Company; downloadable PDF file, 168 p, 2007. http://proquest.umi.com/pqdlink?did=1251904511&Fmt=7&clientId=79356&RQT=309&VName=PQD.

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46

Savic, Vesna. "Design optimization of thin-walled composite beams /". Thesis, Connect to this title online; UW restricted, 2000. http://hdl.handle.net/1773/7036.

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47

Ragon, Scott Alan. "Optimization of composite box-beam structures including effects of subcomponent interaction". Thesis, Virginia Tech, 1994. http://hdl.handle.net/10919/43336.

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Minimum mass designs are obtained for a simple box beam structure subject to bending, torque and combined bending/torque load cases. These designs are obtained subject to point strain and linear buckling constraints. The present work differs from previous efforts in that special attention is payed to including the effects of subcomponent panel interaction in the optimal design process. Two different approaches are used to impose the buckling constraints. When the global approach is used, buckling constraints are imposed on the global structure via a linear eigenvalue analysis. This approach allows the subcomponent panels to interact in a realistic manner. The results obtained using this approach are compared to results obtained using a traditional, less expensive approach, called the local approach. When the local approach is used, in-plane loads are extracted from the global model and used to impose buckling constraints on each subcomponent panel individually. In the global cases, it is found that there can be significant interaction between skin, spar, and rib design variables. This coupling is weak or nonexistent in the local designs. It is determined that weight savings of up to 7% may be obtained by using the global approach instead of the local approach to design these structures. Several of the designs obtained using the linear buckling analysis are subjected to a geometrically nonlinear analysis. For the designs which were subjected to bending loads, the innermost rib panel begins to collapse at less than half the intended design load and in a mode different from that predicted by linear analysis. The discrepancy between the predicted linear and nonlinear responses is attributed to the effects of the nonlinear rib crushing load, and the parameter which controls this rib collapse failure mode is shown to be the rib thickness. The rib collapse failure mode may be avoided by increasing the rib thickness above the value obtained from the (linear analysis based) optimizer. It is concluded that it would be necessary to include geometric nonlinearities in the design optimization process if the true optimum in this case were to be found.
Master of Science

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48

Arenburg, Robert Thomas. "Analysis of metal matrix composite structures using a micromechanical constitutive theory". Diss., Virginia Polytechnic Institute and State University, 1988. http://hdl.handle.net/10919/49918.

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The nonlinear behavior of continuous-fiber-reinforced metal-matrix composite structures is examined using a micromechanical constitutive theory. Effective lamina and laminate constitutive relations based on the Aboudi micromechanics theory are presented. The inelastic matrix behavior is modeled by the unified viscoplasticity theory of Bodner and Partom. The laminate constitutive relations are incorporated into a first-order shear deformation plate theory. The resulting boundary value problem is solved by utilizing the finite element method. · Computational aspects of the numerical solution, such as the temporal integration of the inelastic strains and the spatial integration of bending moments are addressed. Numerical results are presented which illustrate the nonlinear response of metal matrix composites subjected to extensional and bending loads. Experimental data from available literature are in good agreement with the numerical results.
Ph. D.
incomplete_metadata

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49

Hankins, Steven C. "Standoff screws functioning as mechanical shear connectors in composite joists". Thesis, This resource online, 1994. http://scholar.lib.vt.edu/theses/available/etd-01242009-063249/.

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50

Chang, Min-Yung. "Active vibration control of composite structures". Diss., This resource online, 1990. http://scholar.lib.vt.edu/theses/available/etd-09162005-115021/.

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