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 96 for “"ultimate tensile strength"”.
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Characterizing the failure of parachute seams : the impact of stitch concentration and strain rate on ultimate tensile strength
… by a seam efficiency, a percentage of the strength of the cloth used to stitch the seam together. In this study, seams and cloth were tested to failure on an Instron 5582 to experimentally determine their respective Ultimate Tensile Strengths (UTS). The ratio of the seam UTS to the cloth …
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Investigation of Required Tensile Strength Predicted by Current Reinforced Soil Design Methodologies
… technologies that use reinforcement to provide tensile capacity within soil masses. However, the soil theories behind each method and the design methodologies associated with GRS and MSEW technologies are quite different. Therefore, a study was undertaken to compare the required tensile strength …
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Influence of Grain Size and Widmanstätten Colonies on Variability of Tensile Properties of Forged Ti-6Al-4V
… the lot that did not meet specification. The ultimate reason for failure was due to lower than necessary yield strength and ultimate tensile strength values, as well as unwanted variability between regions of the part. Therefore, samples of the regions were tensile tested to determine the …
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The influence of nitrogen on the deformation behaviour of a modified AISI type 200 series alloy
… of nitrogen contents from 0 to 0.27 wt%. The tensile behaviour was characterised by uniaxial tensile testing. The room temperature yield strength was shown to decrease with increasing nitrogen content for nitrogen contents less than 0.1 wt%. This decrease was attributed to the presence of …
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Development of third generation advanced high strength steels
… investigated as third generation advanced high strength steels targeted for automotive applications. Large additions of manganese (>13 wt%) and carbon (</p> <p>Duplex steels with different volume fractions of primary <em>δ</em> -ferrite were used to study the crystallography of austenite formed …
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Batch-compatible Integration of Nanowires with Uniaxial Micro Tensile Testing Platforms
… employ microelectromechanical systems based tensile loading platforms. The nanoscale specimens are typically mounted manually onto the loading platforms with external integration techniques so the boundary conditions have random variations, complicating the experimental measurement of the …
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Mold design, fabrication and tensile testing of EMBed-812, a tissue embedding epoxy resin
… of precision. This thesis focuses on performing tensile tests to determine some of the material properties-elastic modulus, ultimate tensile strength, yield strength-of the epoxy resin used to embed fixed brain tissue. These results will be used in cutting models and help guide the development of …
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The modelling of processing conditions for polypropylene-nanoclay integral hinges at high heat exposure
… as the signal to noise ratio values for ultimate tensile strength, shrinkage and warpage. This research had adopted Taguchi Optimisation Method, to optimise the processing conditions, to generate the regression models and to construct master curves for quality performance prediction based …
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Characterization of mechanical properties of copper covetic wires
… and CuC5 samples having the lowest hardness. The tensile test results showed an increase yield stress and ultimate tensile strength for the CuC3, CuC5, and CuC9 samples. The CuC3 and CuC9 samples had higher yield stress and ultimate tensile strength than the CuC5 and CuC0 sample. The elastic …
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Fatigue life prediction on nickel base superalloys
… predicting mechanical properties such as yield strength and ultimate tensile strength. These networks require large amounts of input data in order to learn the correct data trends. A neural network modelling process has been developed which includes data collection methodology and subsequent …
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The Mechanical Thermal and Microstructural Behaviors of the Strip Silicates Reinforced Epoxy-based Nanocomposites
… then casting to mold dog-bone shape samples for tensile and other tests. A gradual trend of changes upon mechanical, thermal and microstructural behaviors were investigated. Introduction of strip silicates inside the epoxy matrix contributed to higher tensile strength, flexural strength and …
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Experimental investigation of structure, composition and properties of novel metal-carbon covetic materials
… properties of covetics were measured by tensile test (Young’s modulus, 0.2% yield strength, ultimate tensile strength, and elongation), Charpy impact test (energy absorption), nanoindentation (elastic modulus and hardness) and Vickers and Rockwell methods (hardness). Scanning Electron …
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Improved Properties of Poly (Lactic Acid) with Incorporation of Carbon Hybrid Nanostructure
… acid) matrix and (b) to improve mechanical strength and oxygen barrier property, which extend the application of poly(lactic acid). Graphene oxide has been found to have relatively even dispersion in poly(lactic acid) matrix while its own coagulation has become significant draw back for …
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Tensile, Creep, and Fatigue Behaviors of Thermoplastics Including Thickness, Mold Flow Direction, Mean Stress, Temperature, and Loading Rate Effects
… investigation to evaluate and quantify the tensile, creep, and fatigue behaviors of two thermoplastic polymers. The effects considered in this experimental study include mold flow direction, thickness, mean stress, temperature, and loading rate. Specimens were subjected to monotonic tension, …
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Characterization of tensile and hardness properties and microstructure of 3D printed bronze metal clay
… Since no material data exists for this clay, the tensile strength and hardness properties of BMC are compared to wrought counterpart. In this research tests are completed to determine the mechanical properties of Cu89Sn11 Bronze Metal Clay. The author of this thesis compares the physical …
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Surface Orientation Dependent Corrosion Damage and Temperature Dependent Mechanical Property Degradation of Sensitized AA5083-H116 Alloys
… and subsequent mechanical (tension and tensile creep) testing. To connect the laboratory studies to the field exposure, Novelis 5083-H116 was sensitized at 100°C; dog bone samples were created and exposed for two years in a beach environment to investigate possible sensitization and …
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Modelling material behavior for additively manufactured metals and polymers produced by fused filament fabrication
… with an emphasis on predicting the yield and ultimate tensile strength of FFF parts. To achieve this, a Finite Element Model (FEM) was developed, incorporating an anisotropic stiffness matrix with material constants obtained through experimental methods.
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Development of a Hollow-Cylinder Tensile Tester to Obtain Fundamental Mechanical Properties of Asphalt Paving Mixtures
… of variation was measured for the HCT and IDT tensile strength results. In general, the coefficient of variation of the HCT strengths was found to be lower than that of the IDT strengths, particularly for ultimate tensile strengths. The HCT and IDT were found to compare favorably in the …
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Elevated temperature mechanical properties and corrosion characteristics evaluation of alloy Ht-9
This thesis presents the results of tensile testing, stress corrosion cracking (SCC) and localized corrosion studies of Alloy HT-9, which is currently being considered as a target structural material for transmutation applications. The results of tensile testing indicate that the yield strength and …
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Performance Characterization of Ceramic Matrix Composites through Uniaxial Monotonic Tensile Testing
… and component design. Monotonic, uniaxial tensile testing of an uncoated carbon fiber reinforced silicon carbide ceramic at room temperature was performed following ASTM standard C1275 to measure ultimate tensile strength and elastic modulus. Equipment verification was carried out through …
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