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Showing 1 to 14 of 14 for “"Tensile response"”.
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Modeling the High Strain Rate Tensile Response and Shear Failure of Thermoplastic Composites
The high strain rate fiber direction tensile response of Ultra High Molecular Weight Polyethylene (UHMWPE) composites is of interest in applications where impact damage may occur. This response varies substantially with strain rate. However, physical testing of these composites is difficult at …
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Elastoplastic response of unidirectional graphite/aluminum under combined tension-compression cyclic loading
… 606l-O aluminum specimens. The elastoplastic response of graphite/aluminum l5° off-axis and 90° specimens under tension-compression cyclic loading was subsequently investigated at three temperatures, -l50°F, room temperature and 250°F. The test results showed that the tensile response was …
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Fatigue behavior of ceramic matrix composites at elevated temperatures under cyclic loading
… cyclic loading. Notch effect on quasi-static tensile response is also considered. Quasi-static and fatigue damage mechanisms and failure modes are examined using various specimen geometries, load levels, fatigue ratios, and laminates stacking sequences by employing a number of NDE techniques. …
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Finite element damage modeling of plain weave fabrics
… determine the longitudinal elastic modulus under tensile loading is presented. Then, a meso level damage model is used for predicting the inelastic tensile behavior of the fabrics. The damage model is validated for the tensile response of T300/5208 laminate for four configurations, [10/-10]2s, …
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Temperature-dependent tensile and shear response of graphite/aluminum
The thermo-mechanical response of unidirectional P100 graphite fiber/6061 aluminum matrix composites (v<sub>f</sub> = 0.47) was investigated at four temperatures: -150°F, +75°F, +250°F and +500°F, using test methods developed at Virginia Tech. Two types of tests, off-axis tension and Iosipescu …
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The effect of interlayers on the mechanical response of composite laminates subjected to in-plane loading conditions
… fatigue cycling, and long-term tensile loading. A new test method, called the Incremental Strain Test (IST), was developed in an attempt to isolate and distinguish the long-term, tensile response of the interlayered and baseline Iaminates. This technique and its utility are …
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High-Strain Rate Tensile Characterization Of Graphite Platelet Reinforced Vinyl Ester Based Nanocomposites Using Split-Hopkinson Pressure Bar
The dynamic response of exfoliated graphite nanoplatelet (xGnP) reinforced and carboxyl terminated butadiene nitrile (CTBN) toughened vinyl ester based nanocomposites are characterized under both dynamic tensile and compressive loading. Dynamic direct tensile tests are performed applying the …
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Cracking of reinforced concrete structural walls subjected to cyclic loading
… comprehensive and dense measurement of their response. The subject of this thesis is the examination of the cracking behavior and seismic response of reinforced concrete structural walls. This examination is being made using the results of a series of experiments conducted at the University of …
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Creep Behavior Of Thin Laminates Of Iron-Cobalt Alloys For Use In Switched Reluctance Motors And Generators
… mechanical test specimens to a battery of tensile and creep tests. The tensile tests provide stress versus strain behaviors that clearly indicate: a yield point, a heterogeneous deformation described as LuÌ ders elongation, the Portevin-LeChatelier effect at elevated temperatures, and, most …
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Defining the Role of Elastic Fibers in Tendon Mechanics
… the magnitude and non-linearity of the elastic response while having a tendon-specific effect on viscoelastic properties, which corresponded to differences in elastin content between tendons. These data suggest that the elastic fibers within the interfascicular matrix do little to contribute to …
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Multi-Layered Randomized Architected Materials (MLRAM) as damage detection indicators for tensegrity structures
… were experimentally tested under monotonic tensile loading to evaluate their mechanical behavior. The second objective involves the development and automation of a finite element method (FEM)-based numerical model capable of accurately replicating the tensile response of MLRAM specimens. An …
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High temperature aging study on long-term aged Alloy 617 and Alloy 230
… is placed on the alloys aged for 10000 hours. Tensile and hardness tests were conducted. EDS coupled SEM and EBSD techniques were applied to reveal microstuctural characters of both alloys. Tensile tests were performed at strain rate of 10-3/s and in temperature range from room temperature to …
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Characterization and modification of electrospun fiber mats for use in composite proton exchange membranes
… the fibers. Morphological changes, in-plane tensile response, friction coefficient, and wear rate were characterized as functions of the annealing temperature. The Young's moduli, yield stresses and toughnesses of the PA 6(3)T nonwoven mats improved by two- to ten-fold when annealed slightly …
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Mechanical behavior of nonwoven felts
… a combination of experiments and simulations. Tensile tests were carried out on unnotched and notched rectangular panels to ascertain the physical phenomena which control the development of damage. It was found that fracture began by interbundle bond fracture followed by frictional sliding …