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 54 for “"tension tests"”.
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Design and use of a fixed-end low-load material testing machine
… an opportunity to perform basic material tests on their own instead of watching a lab technician, thus improving the student's lab experience. The machine proposed is small, low cost, and easy to manufacture, assemble, and operate. Its design is based on a compound flexure mechanism that …
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Characterization of Ultra-High Performance Concrete Tension Behavior Using Different Test Methods
… of being developed and standardized. Direct tension (DT) and four-point bending (4PB) test methods are two commonly used methods in research and practice to assess the tension behavior of fiber-reinforced concrete. This thesis work provides a comprehensive analysis of the experimental …
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Bond and Material Properties of Grade 270 and Grade 300 Prestressing Strands
… grade 300 prestressing strand of various sizes. Tension tests were performed on each type of strand. The data from these tests was used to determine modulus of elasticity, yield stress, ultimate stress, and ultimate elongation for each strand. The yield stresses and ultimate stresses for many of …
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An experimental investigation of the material response of graphite/polyphenylene sulfide
… was experimentally investigated. Quasi-static tension tests were performed on specimens cut from unidirectional panels at angles of 0°, 90°, and 10° in order to the find material properties of the system. The moduli and strengths were compared to those of several other graphite/epoxy systems. …
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Design of a hydraulic bulge test apparatus
The various equi-biaxial tension tests for sheet metal were studied and compared to determine the most appropriate equipping in the Impact and Crashworthiness Laboratory, MIT, for the testing of Advanced High Strength Steel. The hydraulic bulge test was identified as the most economical solution. …
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The role of self-healing coatings on soft polymer fibers
… mechanical properties were tested with uniaxial tension tests. The synthetic system achieved a similar behavior to that of the natural mussel fibers, showing that a thin stiff coating on a soft polymer fiber can have a dramatic effect on its mechanical behavior. The coated fibers were much …
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Mechanics of large-strain deformation of particle-modified polymers
… high-density polyethylene blends during uniaxial tension tests. True stress, true strain, volumetric strain, and full-field contours of strain are extracted from images of the deforming specimens. The experimental results are used to construct and verify single-particle and multi-particle …
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Investigation of cracking resistance of recycled Superpave mixtures
… semicircular bending and Florida indirect tension tests were performed to assess mixture cracking and fracture properties. Results showed that mixtures containing 10% RAP and 5% RAS have relatively low fracture energy, creep compliance, energy ratio, and flexibility index but high resilient …
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Long-term performance of pot hardware in continuous galvanizing lines
Preliminary comparative wearing tests were conducted on wearguard bearing system against CF3M (casting version of 316L steel), with tungsten carbide laser clad coating, at 30% and 50% production line tension. Tests were also conducted on Stellite 6 against Tribaloy T 400 at 50% production line …
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Specimen size effects in slow strain-rate testing
… slow strain-rate environmental effects testing. Tension tests of free machining brass were conducted in a mercuric nitrate solution at a constant crosshead displacement rate of 10⁻³(inch/sec). Thirty-six smooth round bar specimens with different dimensions were tested. It was shown that percent …
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Standardization of test methods for property evaluation of FRP bars
… (FRP) bars by conducting limited complementary tests to determine/verify their mechanical properties. Both short and long-term tests were conducted as a part of this research. Short-term tests included tension, flexure, shear and bond property evaluations. Long-term tests included evaluation of …
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Viscoelastic characterization of collagen-GAG scaffolds
… scaffolds exhibit linear viscoelastic behavior. Tension tests were performed on dry and hydrated engineered collagen-GAG scaffolds in order to develop a stress-strain curve. Strains that fell in the linear elastic region of these curves were selected and then used in stress relaxation tests that …
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The effect of gap size on performance of metal plated joints in compression
… plate ratings on a per area basis derived from tension tests is misleading.
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Durability of fiber-reinforced composite wrap system for the rehabilitation of concrete structures
… resisting capacity of the cylinder.;Coupon level tests consisted of Dynamic Mechanical Thermal Analysis (DMTA) and Tension tests conducted on separate composite coupons that were aged in a similar environment as the cylinders. (Abstract shortened by UMI.).
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Interação do hidrogênio com a microestrutura dos aços inoxidáveis supermartensíticos sob regime elástico
… microstructure characterization and uniaxial tension tests (especially with hydrogenated samples under uniform stress) were made cooperatively with numerical analyses. The hydrogen interaction parameters and the microstructure were according to the literature, with the results being affected …
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Incorporating Mullins Effect into the Modeling of Hyperelastic Actuators
… model was calibrated using uniaxial tension tests on super-soft latex samples, and the fractional multiplier was calibrated via cyclic fluid loadings on separate samples. Ultimately, this model allows for a more precise understanding of how a hyperelastic actuator will respond over …
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A continuum surface layer effect in polycrystalline aggregates
Uniaxial tension tests on uniform cross section specimens of Ti-6Al-4V and aluminum 7475-T651 show that the stress in the direction of load application determined by x-ray diffraction and the nominal applied stress display the expected linear correspondence up to a maximum stress somewhat below the …
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Chemomechanics of calcium leaching of cement-based materials at different scales : the role of CH-dissolution and C-S-H degradation on strength and durability performance of materials and structures
… is evaluated through triaxial compression tests and uniaxial tension tests, revealing an important strength loss and an increased pressure sensitivity of the materials at failure, associated with leaching. A micromechanical approach for the homogenization of the elastic properties and the …
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Biomechanical properties of engineered collagen scaffolds
… collagen scaffolds were hydrated and loaded in tension, and their mechanical properties were compared. It was found that non-crosslinked scaffolds experience an average increase in weight after hydration of 10,353%, compared to 7,265% for crosslinked scaffolds. Hyperelastic material parameters …
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Development of Open-Source Software for Repeatable Processing of Mechanical Test Data
… demonstrations consists of 100 uniaxial tensile tests, and 56 plane-strain tension tests on aluminium AA6061, as well as 70 uniaxial compression tests, and 40 plane-strain compression tests on aluminium AA3104. The Jupyter Notebooks containing the code for these demonstrations serve as tutorials …
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