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Showing 1 to 20 of 119 for “"uniaxial compression"”.
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Geophysical signatures of crack initiation and growth in rocks under uniaxial compression
Fracturing processes in rocks is a complex phenomenon. Understanding the crack nucleation, propagation, and mechanisms involved during rock fracture plays an important role in the design of engineering structures, in the field of seismology, in natural resource extraction, different rock-breaking …
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The effects of uniaxial compression on the third zone Fermi surface of aluminum
Submitted by Megan O'Donnell (mnodonn2@illinois.edu) on 2012-03-14T19:42:35Z No. of bitstreams: 1 1971_spurgeon.pdf: 2717657 bytes, checksum: dc3330ba61b24861c637c7c8e34e91ee (MD5)
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Analysis of Hot Mix Asphalt (HMA) Linear Viscoelastic and Bimodular Properties Using Uniaxial Compression and Indirect Tension (IDT) Tests
… dynamic complex modulus obtained from either the uniaxial or triaxial compressive dynamic modulus test. Furthermore, as part of the performance-based mix design process, the triaxial dynamic modulus has been selected to predict rutting and fatigue cracking, and the Indirect Tension (IDT) creep …
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A comparison of short-circuited streaming potentials in Westerly granite from changes in the rock's volume, shape, saturation, and fracture under unconfined uniaxial compression
… into the phenomena of electrical charge in the uniaxially stressed environment of a sample of Westerly granite. Varying properties of size, shape, saturation, and stress rate of the Westerly granite, a tentative set of physical relationships were measured. For instance, there is a strong …
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Acoustoelastic effects of surface waves in concrete subjected to compressive and bending stresses
… samples subjected to 4-point load bending and uniaxial compression, considering a broad range of strain levels. The main objectives are (1) to study individually the acoustoelastic effects in tension and compression, through bending, and (2) to study the acoustoelastic effects of uniaxial …
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Investigation of In-Situ Stresses in Rocks via Acoustic Emission and the Kaiser Effect.
… and other subsurface rocks by means of compression‐induced Acoustic Emission (AE) and the Kaiser effect. The KISS System is a non‐destructive method of in‐situ stress determination and has received much attention in the past. To fully understand AE, the Kaiser Effect and how it relates …
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Mechanics of Random -Fiber Networks: A Direct Simulation
The simulation then extends the uniaxial compression to large shear deformation. A maximum shear strain of about 2.0 is applied. Results from the simulation are shown for the bulk shear stress, the number of fiber-fiber contacts and the fiber orientation. This simulation provides an interesting …
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Bifurcação secundária instável em placas retangulares
… for practical geometries, a flat plate under uniaxial compression may loose its stability in the elastic regime and therefore, before the occurence of plastic colapse.
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A study of tension, compression, and shear test methods for advanced composites
… of three areas of interest. These areas were uniaxial tension, uniaxial compression and in-plane shear. Test methods were selected for tension, compression and shear and guidelines set for the entry of material property data into a comprehensive mechanical property database being undertaken by …
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Microstructural evolution of AISI304 stainless steel in the Steckel Mill rolling process
… be negligible. Laboratory simulation was done in uniaxial compression testing on a Cam Plastometer. It was found that the temperature has a profound influence on the flow stress and the microstructure. The strain rates experienced in hot rolling does not have a significant effect on the flow …
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The mechanics of strain-induced crystallization in poly(ethylene terephthalate)
… and temperatures (25 ° C - 105 ° C) and in both uniaxial and plane strain compression. The increase in crystallinity content with varying strain rate and temperature and for the two different states of strain that developed as a result of these deformation conditions was investigated using …
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Compression behavior of smectitic vs. illitic mudrocks
… in pore pressure. This thesis investigates the compression and permeability behavior change due to S-I transformation. Uniaxial compression testing was performed on smectitic and illitic mudrocks. The original Gulf of Mexico - Eugene Island (GoM-EI) mudrock sets the baseline for smectitic …
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Design and large deformation response of additively-manufactured shell-lattices
… Results are partially validated through uniaxial compression of specimens made of 316L stainless steel via selective laser melting. In a first study the large deformation responses of four different mesostructures of relative density 20% are compared: an octet truss-lattice, tube-lattice, …
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Geotechnical Properties Of the Travis Peak (Hosston) Formation in East Texas: A Compressive and Tensile Strength Analysis using Regression Analysis.
… The parameters which were used were the Uniaxial Compression Test (UCS) and tensile strength.</p> <p>Core samples were collected at Stephen F. Austin State University Core Lab Repository. Strength tests were conducted at the lab facilities of University of Houston.</p> <p>Parameters such …
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A finite strain theory, and its application to the plane stress response of polyurethane
… and in addition, three auxiliary problems; the uniaxial compression problem, the uniaxial tension problem, and a shear problem are checked experimentally to further cheek the validity of the proposed theory when applied to the finite strain response of polyurethane.
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Textural Influence of Fruit Paste Type on Sensory Perception
… paste composition, mechanical texture analysis (uniaxial compression, texture profile analysis and three-point bending), and a trained sensory panel. Based on this research, several commercially viable options for fruit paste containing bars were identified, each of which exhibited differentiated …
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Deformation mechanisms in bulk nanostructured aluminum obtained after cryomilling and consolidation by spark plasma sintering
… The samples obtainedwere plastically deformed in uniaxial compression. We show that there is a significant fraction of plastic strain (11%) that can be recovered after unloading. High-energy synchrotron X-ray diffraction experiments revealed that, there is a correlation between plastic strain …
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A thermo-mechanical finite element simulation of hot rolling for the prediction of roll forces
… to model the material flow stress accurately, uniaxial compression testing was conducted in the temperature range of 800-1250° at intervals of 50°C. The strain rates tested were 35, 10, 3.5, 1.0, 0.35, 0.1, 0.01s-1 and each temperature was tested within each strain rate. Stress curves were …
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Minimum-weight design of compressively loaded stiffened panels for postbuckling response
… thin-walled stiffened composite panels loaded in uniaxial compression based on a geometrically nonlinear analysis. An approximate, semi-analytical nonlinear analysis code, NLPAN, which requires buckling eigenfunction information from the buckling analysis code, VIPASA, is linked with the …
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Structural analysis of geodesically stiffened composite panels with variable stiffener distribution
… of straight stiffeners. Applied loads are uniaxial compression, pure shear, and combined compression-shear.
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