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Showing 1 to 20 of 574 for “"unidirectional"”.
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Unidirectional inline skates
In this thesis, I describe the design, manufacture, assembly, and testing of "1WSkates," a pair of inline skates that prevent backwards motion. The defining element of 1WSkates is the use of a one-way bearing which, along with a fixed axle, prevents certain wheels from rolling backwards. The axle …
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Failure processes in unidirectional composite materials
Failure processes in unidirectional composite materials subjected to quasi-static tensile load along the fiber direction are investigated. The emphasis in this investigation is to identify the physical processes taking place during the evolution of failure in these materials. An extensive …
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Three-Phase and Unidirectional Heat Transfer
… diodes, by definition, accomplish this desirable unidirectional heat transfer functionality. Nonetheless, the existing thermal diodes are currently constrained by either a low diodicity (i.e., heat transfer ratio), gravitational dependence, a one-dimensional configuration, or poor durability. …
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Unidirectional Magnetoresistive Behaviors: Materials, Characterization, and Prospects
… read and write lines needs to be developed. The unidirectional spin Hall magnetoresistance (USMR) is a prospective candidate to read the magnetization with a two-terminal configuration.Unidirectional magnetoresistive behaviors, including USMR, unidirectional magnetoresistance (UMR), and bilinear …
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Unidirectional solidification studies of ingot mould cast irons
… of a controlled solidification technique, under unidirectional heat flow conditions, with cooling rates varying from 623°C/min.(at the chill/metal interface) to 4.35°C/min.(near the feeder head). Statistical analysis of cooling rate reproducibility between castings has indicated …
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Plastic Limit Strength of Unidirectional Fiber-Reinforced Composites
Made available in DSpace on 2014-12-12T00:25:55Z (GMT). No. of bitstreams: 1 7412096.pdf: 3964294 bytes, checksum: c5f33e8b13e6b61aa900c2bea126faf6 (MD5) Previous issue date: 1973
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Unidirectional active acoustic control for launch vehicle fairings
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2000.
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Prediction of crack extension direction in unidirectional composites
… parameters affecting crack growth direction in unidirectional comµosite materials. To achieve this, the effect of anisotropy and biaxial loading on the direction of crack growth in unidirectional off-axis composite materials were investigated. Specific emphasis was placed on defining the crack …
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The compressive behaviour of unidirectional carbon fibre reinforced plastic
… investigation into the compressive strength of unidirectionally reinforced carbon fibre composites when loaded parallel to the fibres. A comprehensive review of previous research is presented and from this it is clear that no overall theory e,d.sts for predicting the unidirectional compressive …
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Mechanical response of unidirectional Boron/Aluminum under combined loading
… were employed to characterize the response of unidirectional Boron/Aluminum metal matrix composite material under monotonic and cyclic loading conditions, namely: Iosipescu Shear, Off-Axis Tension and Compression. The characterization of the elastic and plastic response includes the elastic …
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Surface acoustic wave single-phase unidirectional transducers and phase weighting
Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1985.
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Pressure Shielding Mechanisms in Bio-Inspired Unidirectional Canopy Surface Treatments
… design, development and experimental testing of unidirectional canopy surface treatments which are evenly spaced arrays of streamwise rods placed parallel to the wall without an entrance condition. The canopy designs are based on surface treatments tested by Clark et al. (2014) inspired by the …
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Tensile behavior of unidirectional and cross-ply ceramic matrix composites
The tensile behavior of two ceramic matrix composites (CMC's) was observed. The materials of interest in this study were a glass-ceramic matrix composite (GCMC) reinforced with Nicalon fibers and a Blackglas™ composite also reinforced with Nicalon fibers. Both had a symmetric cross-ply layup. …
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Bidirectional and unidirectional spectral representations for the scalar wave equation
… and assessment of the bidirectional and unidirectional spectral representations. These two novel methods for synthesizing wave signals are distinct from the superposition principle underlying the conventional Fourier method and they can effectively be used to derive a large class of …
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A critical assessment of crack growth criteria in unidirectional composites
The problem examined is an infinite anisotropic layer with a through crack at arbitrary orientation, subjected to uniform in-plane remote loading. The purpose of this study is to gain a better understanding of several theoretical models for predicting the direction of crack propagation and the …
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Experimental study of clast orientation in gravels deposited by unidirectional flow
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Earth, Atmospheric, and Planetary Sciences, 1985.
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Correlation of three standard shear tests for unidirectional glass-epoxy composites
The shear strength of unidirectional glass-epoxy composites was determined experimentally by three standard shear tests. The tests consisted of short beam interlaminar shear tests, saw-cut shear tests, and torsion tests on circumferentially wound cylinders. Test results show that the short beam …
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