Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 205 for “"Structural Materials"”.
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Impulse damping in structural materials
Thesis (B.S.)--Massachusetts Institute of Technology, Dept. of Physics, 1990.
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Biomineralized structural materials with functional optical properties
Many biological structural materials exhibit "mechanical property amplification" through their intricate hierarchical composite designs. In the past several decades, significant progress has been achieved in elucidating the structure/mechanical property relationships of these materials. However, …
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Embrittlement and Flow Localization of Reactor Structural Materials
Notch effects have been analyzed utilizing finite element method (FEM) and EBSD misorientation map for unirradiated and irradiated 316L stainless steel. The major issue of interest is the possibility that low ductility, often found following irradiation exposure, will translate into low notch …
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Tensile Fracture Mechanisms of Ferritic/martensitic Structural Materials
… This method is called the Universal Micro-structural Geometry-corrected Model (UMGM) in this dissertation. Due to the development of tri-axial stress and severe distortion of grain structure in the necking region, it is a challenge to determine the true strain/stress curve, a critical input …
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Simultaneous machining of aerospace structural materials using poly-drills
… the growth of composites and other lightweight materials, aluminium alloys remain an attractive choice for the aerospace industry due to their distinct manufacturing processes, good resistance to fatigue crack growth and superior damage tolerance. In the aerospace industry, the drilling process …
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Natural Kenaf Fiber Reinforced Composites as Engineered Structural Materials
… reinforced polymer (NFRP)'s ability to act as a structural material.;As a chemical treatment, aligned kenaf fibers were treated with sodium hydroxide (alkalization) in different concentrations and durations and then manufactured into kenaf fiber / vinyl ester composite plates. Single fiber …
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Metallurgical characterization and residual stress measurements of target structural materials
… on the evaluation of residual stresses in target structural materials due to plastic deformation and welding by using both destructive ring-core (RC) method and nondestructive techniques including positron annihilation spectroscopy (PAS), neutron diffraction (ND) and x-ray diffraction (XRD) …
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A comparative analysis of aluminum, steel and wood as structural materials
Thesis (M.S.)--Michigan State College of Agriculture and Applied Science. Dept. of Civil Engineering, 1950
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Metallurgical characterization of self catalytic structural materials for sulfuric acid decomposition
… have been characterized according to their microstructural features. The goals of characterization were to determine metallurgical stability for service as self-catalytic structural materials. The results presented herein will be useful to the development of a material for the construction of a …
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General assessment and radiation damage minimization of advanced structural materials for compact tokamaks
L'abstract è presente nell'allegato / the abstract is in the attachment
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Time-Space-Resolved Raman Analysis of Structure-Property Relationships in Heterogeneous Structural Materials
… impact, research on sustainable construction materials is essential. In particular, characterizing the chemo-mechanical properties could lead to the development and evaluation of sustainable materials. However, the spatial and temporal complexity of cementitious materials makes it challenging …
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A Study of Stern Structural Materials in Arithmetic in the First and Second Grades
… exploring the possibilities of using the Stern Structural Arithmetic Materials as basic instructional equipment in all first and second grades in the Rochester City School District. Number 41 School is one of the experimental schools in this project and the recordings in this paper deal …
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Experiments augmented computational analysis of structural materials: A focus on metallic and biological systems
… emissions and the need for high performance materials in advanced engineering applications have posed significant challenges for materials scientists. This research first investigates the influence of high magnetic fields during heat treatment an energy efficient alternative to conventional …
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Quantifying the adhesion of noble metal foulants on structural materials in a Molten Salt Reactor
… MSRE were measured on six different potential structural materials by atomic force microscope force spectroscopy (AFM-FS). The noble metals studied were niobium, molybdenum, ruthenium, antimony and tellurium. Structural materials measured were Hastelloy-N, the primary structural metal of the …
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Development of A Micro-Scale Impact Tester for Characterizing Dynamic Properties of Biological Structural Materials
… in Virginia Tech's Biological and Bio-inspired Materials Laboratory. A brief overview of current projectile impact testers is presented along with motivation for the fabrication of a new testing system capable of firing a projectile with a maximum diameter of 0.5 mm at velocities ranging from 20 …
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Corrosion Behavior of Potential Structural Materials for use in Nitrate Salts Based Solar Thermal Power Plants
… study investigates the corrosion behavior of structural alloys and electrochemical testing in molten nitrate salts at three temperatures common to CSP plants. Corrosion behavior was evaluated using gravimetric and inductively-coupled plasma optical emission spectroscopy (ICP-OES) analysis. …
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The development of autocatalytic structural materials for use in the sulfur-iodine process for the production of hydrogen
… was the focus of this study. The alloying of structural materials to platinum has been proposed as a solution to this problem. A catalytic loop to test the materials was constructed. Sulfuric acid was pumped over the material at 903+20C. The sulfur dioxide production of the catalyst was …
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Feasibility of fiber reinforced composite materials used in highway bridge superstructures
Composite materials are considered here as structural materials of highway bridge superstructures. Bridge deck designs can be done according to <i>AASHTO</i>¹ specification and elastic design concepts. In order to evaluate the feasibility of composites as structural materials of highway bridge …
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Understanding Ferroelastic Domain Reorientation as a Damping Mechanism in Ferroelectric Reinforced Metal Matrix Composites
… potential to improve damping characteristics of structural materials. Many structural materials are valued based on their stiffness and strength; however, stiff materials typically have limited inherent ability to dampen mechanical or acoustic vibrations. The addition of ferroelectric ceramic …
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