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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 32 for “"Microstrain"”.
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Microstrain Study of Strain Hardening in Copper
Made available in DSpace on 2014-12-10T17:57:43Z (GMT). No. of bitstreams: 1 6604142.pdf: 2508881 bytes, checksum: db037d8126c55ffce2ab7bbea848c8ad (MD5) Previous issue date: 1965
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Error estimation in whole bone microstrain measurement when using digital volume correlation
… the 3-dimensional images. Uncertainty in the microstrain calculated arises due to limitations in microscopy, the absence of a homogeneously distributed pattern within the bone volume, and inconsistency the methodology used to process the micro-CT scans and microstrain data. The uncertainty in …
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Microstrain Study of the Effect of Secondary Slip in Strain Hardening of Copper Single Crystals
Made available in DSpace on 2015-05-12T21:41:03Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 7013386.PDF: 2604561 bytes, checksum: fb0183a33b8de035f2da7ea953c7bf7f (MD5) Previous issue date: 1969
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Longitudinal misalignment based strain sensor
… with a resolution ranging between 10 and 100 microstrain depending on sensor design choices. This intensity based sensor measures strain by monitoring strain induced longitudinal misalignment in a novel fiber interconnection. This interconnection is created by aligning fibers within a segment …
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Multi-component boron coatings on low carbon steel AISI 1018
… quantitative phase analysis, crystalline size, microstrain and lattice parameters of the multi-component boron coatings. The results have shown that adding transition metals into the B-Fe system caused the formation of solid solution of transition-metal borides. The distortion of crystal lattice …
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CHARGE TRANSPORT IN ORGANIC AND HYBRID PEROVSKITE FIELD EFFECT TRANSISTORS
… as high as 6.8 cm2/Vs. We find that the microstrain induced in the organic semiconductor layer by the mismatch in the thermal expansion between the consecutive device layers generates trapping states and localize charge carriers, leading to a surprising universal scaling between the …
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Compressive Creep of Prestressed Concrete Mixtures With and Without Mineral Admixtures
… this study were found to be between 1200 ± 110 microstrain at 28 days, and 1600 ± 110 microstrain at 97 days, at a five percent significant level.
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Implementation of Self-Consolidating Concrete for Bridge Applications
… in the prestressing strand gages ranged from 200 microstrain to 400 microstrain, and 200 microstrain to 500 microstrain for the SCC-2 and TVC beams, respectively. The rate of change in the strain readings for the beams has since decreased drastically.
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Constitutive model of aligned carbon nanotube/nafion nanocomposite ionic electroactive polymer actuators
… high Vf i-EAP devices at ±3 V show ±4,130 microstrain in the transverse direction and an order of magnitude smaller strain (±420 microstrain) in the CNT axis direction, with A-CNT and Nafion Vfs of ~20% and ~15%, respectively. These large non-isotropic strains correspond to electroactive …
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Tip-up and stabilization of an autonomous four-wheeled vehicle
… an ARM7-based FEZ Domino microcontroller and a MicroStrain 3DM-GX2 inertial measurement unit. Data logged during experimental trials were analyzed in MATLAB to assess the stability and effectiveness of the controller. Experimental results indicate the controller is capable of driving the vehicle …
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Deformation mechanisms in bulk nanostructured aluminum obtained after cryomilling and consolidation by spark plasma sintering
… nm)were separated in terms of lattice strain, microstrain, crystallite size and crystallographic texture. During loading-unloading cycles we observe a lattice strain splitting between nc and UF volume fractions, a complete recovery of the peak broadening and a recovery of texture. These …
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Electronic and Optical Properties of Self-Assembled Quantum Wires
… field model, we systematically studied the microstrain effects on the electronic and optical properties of Ga(1-x)In(x)As self-assembled quantumwires (QWR's) made of short-period superlattices with strain-induced lateral ordering. Valenceband anisotropy, band mixing, and effects due to local …
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Kalman filtering of IMU sensor for robot balance control
… errors inherent to orientation sensing in the MicroStrain 3DM-GX1 IMU for static cases as well as after experiencing an impact force. Balance simulations were performed to control the center of mass location of a robot modeled as an inverted pendulum. The controlled center of mass trajectories …
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Specific Heat and Thermodynamic Properties of Metallic Systems: Instrumentation and Analysis
… the specific heats, which has been attributed to microstrain in the polycrystal. The third law entropy for the polycrystal at 298.15 K, Δ_0^298.15S°m, calculated from these heat capacities is 50.21 ±0.1 J•K^-1•mol^-1, which is good in agreement with previously published values of polycrystal …
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Bragg grating sensor interrogation using in-line, dual-mode fiber demodulators
… source operating at 300 microwatts, less than 1 microstrain resolution is achievable.
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Understanding and controlling the reactivity of oxygen reduction and methanol oxidation electrocatalysts
… that the d-band center can be tuned by inducing microstrain in the Pt electrodeposit, simply achieved by introducing polymer into the electrodeposition bath. Pt electrodes (Pt-P1 and Pt-PLA) prepared with the addition of Poly-N-(6-aminohexyl)acrylamide (P1) or Poly-L-arginine (PLA) exhibit …
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Measuring surface ocean wave height and directional spectra using an Acoustic Doppler Current Profiler from an autonomous underwater vehicle
… inertial navigation unit. Additionally, a Microstrain 3DM-GX3-25 Attitude Heading Reference System was tested as a low cost alternative to the Kearfott system. An experiment consisting of multiple REMUS deployments was conducted near the Martha's Vineyard Coastal Observatory (MVCO). The …
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Measuring surface ocean wave height and directional spectra using an Acoustic Doppler Current Profiler from an autonomous underwater vehicle
… inertial navigation unit. Additionally, a Microstrain 3DM-GX3-25 Attitude Heading Reference System was tested as a low cost alternative to the Kearfott system. An experiment consisting of multiple REMUS deployments was conducted near the Martha's Vineyard Coastal Observatory (MVCO). The …
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Field and Laboratory Tests of a Proposed Bridge Deck Panel Fabricated from Pultruded Fiber-Reinforced Polymer Components
… during field testing was approximately 600 microstrain, which is less than 15% of the ultimate tensile strain of the FRP in its weakest direction. After being subjected to approximately 4 million load cycles (assuming 100,000 5-axle truck crossings per month) over a period of 8 months, the …
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Antarctic tabular icebergs in ocean waves
… icebergs. The largest strains, of the order of microstrain and larger, are experienced when icebergs respond to storm swell of periods between 15 and 40 s. Finally, we discuss evidence for the break-up of tabular icebergs and conclude that the shape and size, as well as inherent flaws are …
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