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Thematische Bibliographien / Testing alloys / Dissertationen

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Dissertationen zum Thema „Testing alloys“

Autor: Grafiati

Veröffentlicht am 28. Juni 2021

Zuletzt aktualisiert am 29. Juli 2025

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1

May, Katelun. "Small Scale Tensile Testing of Titanium Alloys." The Ohio State University, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=osu1282099780.

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2

Battocchi, Dante. "The Development, Characterization and Testing of Mg-rich Primers." Diss., North Dakota State University, 2012. https://hdl.handle.net/10365/26453.

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Aluminum alloys are widely used in aircraft industry for their strength and light weight. Those alloys that are hardened by precipitation, especially the Copper-rich of the 2000 series, are prone to corrosion and are protected against it using chromate containing coatings. The primary component of these coating systems is Chromium 6+ (CrVI) that has been found to be very toxic in the environment and carcinogenic, toxic and mutagenic in humans. The Mg-rich primer development is the result of a successful multi-year project funded by the US Air-force with its objective the replacement of coat

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3

Edgemon, Glenn Leon. "The time-temperature-sensitization behavior of alloy 800 as determined by the electrochemical potentiokinetic reactivation test and the modified strauss test." Thesis, Georgia Institute of Technology, 1993. http://hdl.handle.net/1853/20034.

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4

Speicher, Matthew S. "Cyclic testing and assessment of shape memory alloy recentering systems." Diss., Georgia Institute of Technology, 2009. http://hdl.handle.net/1853/33834.

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In an effort to mitigate damage caused by earthquakes to the built environment, civil engineers have been commissioned to research, design, and build increasingly robust and resilient structural systems. Innovative means to accomplish this task have emerged, such as integrating Shape Memory Alloys (SMAs) into structural systems. SMAs are a unique class of materials that have the ability to spontaneously recover strain of up to 8%. With proper placement in a structural system, SMAs can act as superelastic "structural fuses", absorbing large deformations, dissipating energy, and recentering t

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5

Totty, Jennifer L. "Linear cellular copper in bending, compression and shear." Thesis, Georgia Institute of Technology, 2003. http://hdl.handle.net/1853/16913.

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6

Swalla, Dana Ray. "Microstructural characterization of titanium alloys with fretting damage." Diss., Available online, Georgia Institute of Technology, 2004:, 2003. http://etd.gatech.edu/theses/available/etd-04082004-180428/unrestricted/swalla%5fdana%5fr%5f200312%5fphd.pdf.

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7

Tibane, Meriam Malebo. "Phase stability study of Pt-Cr and Ru-Cr binary alloys." Thesis, University of Limpopo (Turfloop Campus), 2011. http://hdl.handle.net/10386/737.

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Thesis (Ph.D. (Physics)) --University of Limpopo, 2011<br>Planewave pseudopotential calculations were conducted to predict the energetics and phase stability of Pt-Cr and Ru-Cr binary alloys. Validation of appropriate number of k-points and planewave energy cut-off was carried out for all studied systems. At the composition of A3B and AB3 (where A = Cr and B = Pt or Ru) phases, the heats of formation determined for five different structures, L12, A15, tP16, DOC and DO′ C are almost of the same magnitude and the relaxed structures show no rotation. We observed that the cubic L12 Pt3Cr i

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8

Phasha, Maje Jacob. "Fundamental study of immiscible Ti-Mg system : ball milling experiments and ab initio modelling." Thesis, University of Limpopo, Turfloop Campus, 2013. http://hdl.handle.net/10386/1395.

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Thesis (Ph. D. (Physics)) -- University of Limpopo, 2013.<br>A combination of ball milling experiments and ab initio calculations in this study successfully yielded results that shed light into understanding the fundamental basis for immiscibility and the concept of mechanical alloying in Ti-Mg system. In addition, the conditions for achieving extended solid solubility in elements that usually do not dissolve in each other under thermodynamic equilibrium conditions have been predicted using ultrasoft (US) and norm-conserving (NC) pseudopotentials. Hydostatic pressures required to stabilize ord

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9

Whitelaw, Roberts S. III. "Experimental determination and constitutive modeling of the deformation behavior of lead-free solders." Thesis, Georgia Institute of Technology, 1997. http://hdl.handle.net/1853/17224.

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10

Mukunthan, Kannappar. "Properties of ultra fine grain [beta]-CuAlNi strain memory alloys." Thesis, University of British Columbia, 1987. http://hdl.handle.net/2429/26724.

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A method has been developed to produce grain sizes as low as 5µm in β-CuAlNi alloys and the effect of grain size on mechanical and strain-memory properties was studied. The thermomechanical treatment procedure involved two. sequential warm working and recrystallization steps at 600° C and 800° C respectively on eutectoid alloys. Three different eutectoid alloys, two with Ms temperature of around 0°C and one with Ms = 220° C were used for the present studies. Even at fine grain sizes, the specimens produced were of single β- phase type without any second phases. Two-stage characteristic stress

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11

Tan, Kian Sing. "Dynamic loading characteristics in metals and composites." Thesis, Monterey, California : Naval Postgraduate School, 2009. http://edocs.nps.edu/npspubs/scholarly/theses/2009/Dec/09Dec%5FTan_Kian_Sing.pdf.

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Thesis (M.S. in Mechanical Engineering)--Naval Postgraduate School, December 2009.<br>Thesis Advisor(s): Kwon, Young. Second Reader: Didoszak, Jarema. "December 2009." Description based on title screen as viewed on January 26, 2010. Author(s) subject terms: Tensile tests, Strain rate effects, Dynamic loading, Failure criterion. Includes bibliographical references (p. 37-38). Also available in print.

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12

George, Faith Olajumoke. "Chromium-free conversion coating of aluminium-copper alloys." Thesis, University of Manchester, 2011. https://www.research.manchester.ac.uk/portal/en/theses/chromiumfree-conversion-coating-of-aluminiumcopper-alloys(5176c8af-02af-44a8-a47f-44b5a0c2585c).html.

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Aluminium alloys are frequently pre-treated by a conversion coating before application of an organic coating in order to improve the corrosion resistance and adhesive properties of the surface and the corrosion resistance provided by the system. Chromate-containing conversion coatings are commonly used for this purpose. However, legislation limits future use of hexavalent chromium compounds due to their toxic and carcinogenic nature. Therefore, alternative, so-called chromium-free conversion coatings are being developed that are more environmentally-compliant.The purpose of the present work ha

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13

Zellner, Samantha R. "Charpy Impact Testing of Twinning Induced Plasticity and Transformation Induced Plasticity High Entropy Alloys." Thesis, University of North Texas, 2019. https://digital.library.unt.edu/ark:/67531/metadc1538702/.

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High entropy alloys (HEAs) are a new class of solid solution alloys that contain multiple principal elements and possess excellent mechanical properties, from corrosion resistance to fatigue and wear resistance. Even more recently, twinning induced plasticity (TWIP) and transformation induced plasticity (TRIP) non-equiatomic high entropy alloys have been engineered, promising increased strength and ductility as compared to their equiatomic counterparts. However, impact and fracture resistance of these HEAs has not been studied as much as their other mechanical properties. In this thesis, the h

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14

Nourani, Mohamadreza. "Integrated multiphysics modeling, testing and optimization of friction stir welding of aluminum alloys." Thesis, University of British Columbia, 2013. http://hdl.handle.net/2429/45659.

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The main objective of this work is the development of a novel integrated multiphysics modeling, testing, and optimization of friction stir welding (FSW) for aluminum alloys, and thereby facilitating a better understating of processing-microstructure-properties relationships in this relatively new welding technique. To this end, in this paper-based dissertation, first we review various models and optimization methods used in the field of FSW. Next, based on the current state-of-the-art and a validated 3D thermal model for aluminum 6061 along with a Taguchi design of experiments approach, we mak

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15

Ehret, Steven J. "Instrumentation for anodization and in-situ testing of titanium alloys for capacitor anodes." Case Western Reserve University School of Graduate Studies / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=case1311612394.

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16

Palmer, Benjamin. "Environmentally-Assisted Cracking Response in Field-Retrieved 5XXX Alloys." Case Western Reserve University School of Graduate Studies / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=case1585061712231734.

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17

Mwita, Wambura Mwiryenyi. "Development and testing an intelligent hybrid polymeric composite beam with healing ability embedded with Ni-Ti shape memory alloy." Thesis, Cape Peninsula University of Technology, 2010. http://hdl.handle.net/20.500.11838/1251.

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Thesis (MTech (Mechanical Engineering))--Cape Peninsula University of Technology, 2010.<br>Hybrid polymeric composites (HPC) are widely used for the design of aerospace, automobile and civil engineering structures. One of the major challenges posed by these materials and structures is their brittle nature. When subjected to impact and dynamic loads, the polymeric composite structures undergo micro cracking. The cracks coalesce, propagate and can lead to catastrophic failure of the material and structures. In this thesis, an intelligent hybrid polymeric composite (IHPC) beam with healing abi

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18

Wallace, Jon Michael. "Fretting fatigue crack nucleation in Ti-6A1-4V." Thesis, Georgia Institute of Technology, 2000. http://hdl.handle.net/1853/17266.

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19

Smith, Brian J. "A critical assessment of the potential of shape memory alloys for seismic resistant designs and retrofits." Thesis, Georgia Institute of Technology, 2002. http://hdl.handle.net/1853/19599.

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20

Vu, Chinh Q. L. "Fatigue Characteristics of New ECO Series Aluminum 7175 Alloy." PDXScholar, 2019. https://pdxscholar.library.pdx.edu/open_access_etds/4985.

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In this dissertation, the fatigue characteristics of three newly developed experimental compositions for aluminum 7175, with improved mechanical strength, that uses magnesium-calcium alloy instead of pure magnesium are studied. Specimens of each variant were fabricated and subjected to fatigue life testing, fatigue life data analysis, and observation of their fracture characteristics through optical microscopy and scanning electron microscopy (SEM), and metallography to study their grains and surface characteristics. Fatigue life testing shows all three variants have a fatigue strength that is

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21

Ghasemi, Hamid-Reza M. R. "Computer simulation of carburization corrosion of nickel-base superalloys." Thesis, Virginia Polytechnic Institute and State University, 1985. http://hdl.handle.net/10919/76035.

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A computer model for diffusion-controlled internal precipitation was used to simulate the corrosion behavior of Ni-based superalloys in carburizing atmospheres. The model is based on Crank-Nicholson finite difference solution of the diffusion equation. The code also includes the ternary cross diffusion effect due to substitutional alloying elements that are preferentially oxidized. The model can treat two sets of boundary conditions corresponding to the presence or absence of a protective oxide scale. It accounts for internal precipitation of corrosion products whenever thermodynamic solubilit

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Ded, Gurdish S. "CHARACTERIZATION OF Ni-RICH NiTiHf BASED HIGH TEMPERATURE SHAPE MEMORY ALLOYS." UKnowledge, 2010. http://uknowledge.uky.edu/gradschool_theses/55.

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Among the potential high temperature shape memory alloys, due to its low cost, medium ductility and high work output NiTiHf seems to be the most promising HTSMA for a wide range of applications in the 100-250ºC. A detailed investigation into the shape memory properties and transformation behavior for the Ni-rich HTSMA with the compositions of Ni45.3Cu5Ti29.7Hf20, Ni50.3Ti29.7Hf20 and Ni45.3Pd5Ti29.7Hf20 was carried out. It is possible to form Ni-rich precipitates in Ni-rich NiTiHf alloys and tailor the TTs by heat treatments that results in increased strength and stable response at high temper

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23

Rockett, Chris H. "Flexural Testing of Molybdenum-Silicon-Boron Alloys Reacted from Molybdenum, Silicon Nitride, and Boron Nitride." Thesis, Georgia Institute of Technology, 2007. http://hdl.handle.net/1853/16293.

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MoSiB alloys show promise as the next-generation turbine blade material due to their high-temperature strength and oxidation resistance afforded by a protective borosilicate surface layer. Powder processing and reactive synthesis of these alloys has proven to be a viable method and offers several advantages over conventional melt processing routes. Microstructures obtained have well-dispersed intermetallics in a continuous matrix of molybdenum solid-solution (Mo-ss). However, bend testing of pure Mo and Mo-ss samples has shown that, while the powder processing route can produce ductile Mo meta

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Slagsvold, Marius. "Effect of Fe and Si content in Aluminium Alloys as a result of increased recycling : Testing of high purity Aluminium Alloys in uniaxial tension." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for materialteknologi, 2011. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-16320.

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The recycling of aluminium from used aluminium scrap leads to an unavoidable presence of pollutions in the form of elements of various amounts. Two such elements are iron and silicon. These will always be present to some extent in an aluminium alloy as they are introduced to the alloy during processing. Iron and silicon are accumulative elements, meaning that they can never be completely eliminated once introduced into the aluminium. Some alloys have very narrow compositional windows, they have strict regulations concerning amount of alloying elements allowed. This is of grave importance for t

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25

Zbären, Christoph Oliver. "The effect of thermal cycling on metal-ceramic bond strength /." [S.l.] : [s.n.], 2009. http://opac.nebis.ch/cgi-bin/showAbstract.pl?sys=000288150.

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26

Clark, David A. "Durability of the residual stresses surrounding cold expanded fastener holes in 7050-T7451 aluminum." Thesis, Georgia Institute of Technology, 2000. http://hdl.handle.net/1853/17828.

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27

Imrich, Kenneth J. "The SCC behavior of austenitic alloys in an oxygen-free CO₂ environment containing chloride ions." Thesis, Virginia Polytechnic Institute and State University, 1989. http://hdl.handle.net/10919/77903.

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Stress-corrosion cracking of austenitic alloys in an oxygen-free carbon dioxide environment containing chloride ions was studied under static conditions. Stiffness and X-ray measurements supported results obtained from SEM photomicrographs indicating that the CT specimens loaded to a stress intensity of 22 ksi-in<sup>.5</sup> were not susceptible to SCC in this environment. These alloys were also evaluated for their SCC resistance in boiling MgCl₂ and NaCl solutions. Results of this study indicated that alloys containing higher nickel contents were more resistant to chloride SCC.<br>Master of

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Krishnan, Vinu Bala. "DESIGN, FABRICATION AND TESTING OF A SHAPE MEMORY ALLOY BASED CRYOGENIC THERMAL CONDUCTION SWITCH." Master's thesis, University of Central Florida, 2004. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/4404.

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Shape memory alloys (SMAs) can recover large strains (e.g., up to 8%) by undergoing a temperature-induced phase transformation. This strain recovery can occur against large forces, resulting in their use as actuators. The SMA elements in such actuators integrate both sensory and actuation functions. This is possible because SMAs can inherently sense a change in temperature and actuate by undergoing a shape change, associated with the temperature-induced phase transformation. The objective of this work is to develop an SMA based cryogenic thermal conduction switch for operation between dewars o

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Abu-Farha, Fadi K. "INTEGRATED APPROACH TO THE SUPERPLASTIC FORMING OF MAGNESIUM ALLOYS." UKnowledge, 2007. http://uknowledge.uky.edu/gradschool_diss/493.

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The economical and environmental issues associated with fossil fuels have been urging the automotive industry to cut the fuel consumption and exhaust emission levels, mainly by reducing the weight of vehicles. However, customers increasing demands for safer, more powerful and luxurious vehicles have been adding more weight to the various categories of vehicles, even the smallest ones. Leading car manufacturers have shown that significant weight reduction, yet satisfying the growing demands of customers, would not be feasible without the extensive use of lightweight materials. Magnesium is the

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Mireles, Omar R. (Omar Roberto). "Non-Nuclear Materials Compatibility Testing of Niobium - 1% Zirconium and 316 Stainless Steel for Space Fission Reactor Applications." Thesis, Georgia Institute of Technology, 2004. http://hdl.handle.net/1853/5267.

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A new generation of compact and highly efficient power production and propulsion technologies are critically needed in enabling NASAs long-term goals. Nuclear fission power technologies as part of project Prometheus are in development to meet this need. Proposed reactor concepts utilize a combination of refractory metals and stainless steels. One such refractory alloy, Niobium 1% Zirconium (Nb-1Zr), will be used because of its strength at high temperatures, neutron absorption properties, and resistance to corrosion by liquid alkali metals. One potential problem in using Nb-1Zr is that it u

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Dohr, Judith. "Micromechanical testing of oxidized grain boundaries." Thesis, University of Oxford, 2016. https://ora.ox.ac.uk/objects/uuid:fb8a08ef-87d8-47ab-9ac8-89bf300203ea.

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Primary water stress corrosion cracking (SCC) of metals in pressurized water reactors (PWRs) is known to be one of the most challenging and cost intensive modes of failure in the nuclear industry. Even though it is known that cracking in Ni-base alloys proceeds mainly intergranular (IG), the initiation and propagation of cracks in ductile metals are not yet understood and a much-desired accurate prediction of SCC related failure seems unobtainable. In this thesis, a combination of microcantilever fracture experiments, scanning electron- (SEM) and transmission electron microscopy (TEM) techniqu

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Stang, Eric Thomas. "Constitutive Modeling of Creep in Leaded and Lead-Free Solder Alloys Using Constant Strain Rate Tensile Testing." Wright State University / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=wright1548338008633472.

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33

Tzamtzis, Spyridon. "Solidification behaviour and mechanical properties of cast Mg-alloys and Al-based particulate metal matrix composites under intensive shearing." Thesis, Brunel University, 2011. http://bura.brunel.ac.uk/handle/2438/5079.

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Magnesium alloys, as the lightest of all structural metallic materials, and aluminium-based particulate metal matrix composites (PMMCs), offering unified combination of metallic and ceramic properties, have attracted increased interest from the automotive, aerospace, electronic and recreation industries. Current processing technologies for PMMCs do not achieve a uniform distribution of fine-sized reinforcements and produce agglomerated particles in the ductile matrix, which are detrimental to the ductility. At the same time, molten magnesium alloys contain impurities and oxides and when cast c

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Cortés, Puentes Wilmar Leonardo. "Seismic Retrofit of Squat Reinforced Concrete Shear Walls Using Shape Memory Alloys." Thesis, Université d'Ottawa / University of Ottawa, 2017. http://hdl.handle.net/10393/36167.

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Squat reinforced concrete shear walls are stiff structural elements incorporated in buildings and other structures and are capable of resisting large seismic demands. However, when not properly designed, they are prone to shear-related brittle failure. To improve the seismic behaviour of these structural elements, a retrofitting bracing system incorporating superelastic Shape Memory Alloys (SMAs) was developed. Superelastic Shape Memory Alloys (SMAs) are smart materials with the ability to sustain and recover large pseudo-plastic deformations while dissipating energy. The SMA bracing system co

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Seifi, Mohsen. "Sensitization Effects on Environmentally Assisted Cracking of Al-Mg Naval Alloys." Case Western Reserve University School of Graduate Studies / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=case1450805183.

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36

Iversen, Jørgen Tandberg. "Implementation and Testing of Numerical Models for Evolution of Microchemistry and Microstructure During Back-Annealing of Aluminium Alloys." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for materialteknologi, 2014. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-26682.

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Precipal and Alsoft are two separate models for simulating the effects of back-annealing on microchemistry and microstructure, respectively, in AA3xxx-type aluminium alloys (i.e Mn containing alloys). The precipitation model simulates the precipitation and growth of dispersoids, growth of constituents, and the resulting change in the solid solution concentration. Alsoft is a physical softening model which combines the effects of recovery and recrystallization.Precipal was originally implemented in Fortran 77, while the softening model, Alsoft, is implemented in Python. It would be beneficial

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Whelchel, Ricky Lee. "Characterization of a nickel-base superalloy through electrical resistivity-microstructure relationships facilitated by small angle scattering." Thesis, Georgia Institute of Technology, 2011. http://hdl.handle.net/1853/41130.

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Nickel-base superalloys obtain high temperature mechanical properties through formation of precipitate phases formed via heat treatment. The precipitate microstructure evolves with heat treatment or thermal exposure, which can lead to degrading mechanical properties. This project focuses on the use of electrical resistivity as a non-destructive testing method to monitor the precipitate phase in Waspaloy (a polycrystalline nickel-base superalloy). The evolution of the precipitate microstructure is characterized throughout the volume of the specimens using both small angle neutron scattering (SA

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Carrick, David. "Investigation of microstructure and corrosion in Al-Cu and Al-Mg alloys with and without Li additions." Thesis, Loughborough University, 2015. https://dspace.lboro.ac.uk/2134/21302.

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The corrosion performance of Al-Cu and Al-Mg alloys with and without Li additions have been investigated. These include; AA2024-T3, AA2099-T8E77 (coarse and fine grain structure), AA5083-T351, spray formed Al-Mg-Li and spray formed Al-Mg-Li-Cu-Zn alloy. Atmospheric corrosion was investigated for up to 12 months of exposure in a rural-urban environment, prolonged immersion testing in 3.5 wt.% NaCl for up to 96 hr s and potentiodynamic polarisation in 3.5 wt.% NaCl were examined. This was to answer whether Li additions, spray forming and grain size impacted on the corrosion resistance. Atmospher

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Amruthaluri, Sushma. "An Investigation on Biocompatibility of Bio-Absorbable Polymer Coated Magnesium Alloys." FIU Digital Commons, 2014. http://digitalcommons.fiu.edu/etd/1742.

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Advances in biomaterials have enabled medical practitioners to replace diseased body parts or to assist in the healing process. In situations where a permanent biomaterial implant is used for a temporary application, additional surgeries are required to remove these implants once the healing process is complete, which increases medical costs and patient morbidity. Bio-absorbable materials dissolve and are metabolized by the body after the healing process is complete thereby negating additional surgeries for removal of implants. Magnesium alloys as novel bio-absorbable biomaterials, have attrac

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Luan, LiKang [Verfasser], and M. [Akademischer Betreuer] Heilmaier. "Micro-tensile creep testing for polycrystalline and single crystalline nickel-based high temperature alloys / LiKang Luan ; Betreuer: M. Heilmaier." Karlsruhe : KIT-Bibliothek, 2020. http://d-nb.info/1205001905/34.

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41

Msomi, Velaphi. "Modelling and testing smart aileron servo tabs : developing simulation tools for smart materials." Thesis, Cape Peninsula University of Technology, 2015. http://hdl.handle.net/20.500.11838/2150.

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Thesis (DTech (Mechanical Engineering))--Cape Peninsula University of Technology, 2015.<br>This dissertation addresses the development and the testing of a simulation tool to be used to predict the behaviour of smart material/structures. Along with the development of the simulation tool, a new form of the model describing the behaviour of shape-memory alloy was developed and implemented. The proposed model was developed based on the existing cosine model, conventionally used in literature, but it uses hyperbolic tangent functions. The hyperbolic tangent function was chosen so as to allow the s

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Hess, W. Gregory (Willard). "Cyclic behavior of shape memory alloy tendons and steel bolted t-stubs in beam-column connections." Thesis, Georgia Institute of Technology, 2000. http://hdl.handle.net/1853/20740.

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43

Martin, Alexander Charles. "Initial Weldability of High Entropy Alloys for High Temperature Applications." The Ohio State University, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=osu1555496040477991.

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44

Battaglia, Eleonora. "Correlations between defect content, microstructure and casting quality in HPDC AlSi alloys." Doctoral thesis, Università degli studi di Padova, 2018. http://hdl.handle.net/11577/3427147.

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Two are the key players of this doctoral thesis: secondary AlSi alloys and the High Pressure Die Casting (HPDC) process. As the levels of CO2 and other greenhouse gasses increase, the industry sector is called to reduce the emissions produced and to contain the energy consumptions. Therefore, secondary Al ingot production shows a 6% annual rate growth, mainly drawn by the transport sector. In particular, automotive industry and, in general, transportation one increasingly needs light components in order to reduce total weights and therefore limit harmful emissions and fuel consumption. To

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Norton, Seth J. "Development of a gleeble based test for post weld heat treatment cracking in nickel alloys." The Ohio State University, 2003. http://rave.ohiolink.edu/etdc/view?acc_num=osu1057177289.

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Lalgudi, Srinivas Bhadrinarayanan. "Experimental evalution of oxide growth in binary zirconium alloys along with pure zirconium and Zircaloy-2 by steam corrosion testing." Thesis, KTH, Fysik, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-95310.

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Zaidi, Mohammed. "Experimental Testing and Reliability Analysis of Repaired SMA and Steel Reinforced Shear Walls." Thesis, Université d'Ottawa / University of Ottawa, 2016. http://hdl.handle.net/10393/35357.

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Superelastic Shape Memory Alloys (SMAs) are being explored as alternative reinforcing materials to traditional deformed steel reinforcement for seismic applications. The main advantage is the ability of the SMA to recover large nonlinear strains, which promotes the self-centering phenomenon. The primary objective of this research is to present the performance, before and after repair, of slender reinforced concrete shear walls, one reinforced internally with SMAs in the boundary zones within the plastic hinge region and other control wall reinforced with conventional steel only. The repair pro

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Cherif, Chokri, Rico Hickmann, Andreas Nocke, et al. "Development and testing of controlled adaptive fiber-reinforced elastomer composites." Sage, 2018. https://tud.qucosa.de/id/qucosa%3A35534.

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The integration of shape memory alloys (SMAs) into textile-reinforced composites produces a class of smart materials whose shape can be actively influenced. In this paper, Ni-Ti SMA wires are inserted during the weaving of a glass fiber reinforcement textile. This ‘‘active’’ reinforcement is then combined with an elastomeric matrix to produce a highly flexible composite sheet, which maintains high rigidity in the longitudinal direction. By activating the SMAs, high deflection ratios of up to 35% (relative to the component’s length) are achieved. To adjust the composite’s deflection to defined

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ANTUNES, RENATO A. "Correlacao entre ensaios acelerados e ensaios de campo em corpos-de-provas de aco carbono e aco patinavel, sem e com revestimento." reponame:Repositório Institucional do IPEN, 2002. http://repositorio.ipen.br:8080/xmlui/handle/123456789/11036.

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Made available in DSpace on 2014-10-09T12:47:17Z (GMT). No. of bitstreams: 0<br>Made available in DSpace on 2014-10-09T14:06:54Z (GMT). No. of bitstreams: 1 07965.pdf: 13989863 bytes, checksum: 2913793c77d98e847907fe76fc84fe02 (MD5)<br>Dissertacao (Mestrado)<br>IPEN/D<br>Instituto de Pesquisas Energeticas e Nucleares - IPEN/CNEN-SP

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Tkacz, Jakub. "Reaktivita a úprava vlastností kovových materiálů." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2010. http://www.nusl.cz/ntk/nusl-216602.

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This thesis is focused on corrosion protection of magnesium alloys AZ 91. Very important is material corrosion in some environments and last but not least surface treatment as grinding, polishing and etching. Theoretical part of this thesis is about magnesium and magnesium alloy. It focuses on properties, in order to determine the best procedure for corrosion protection. It characterize material corrosion- for example corrosion in special environment (atmosphere, water, etc.) or elektrolyte corrosion. Big part of theoretical part is focused on electrochemistry, in particular kinetic aspects (T

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