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Showing 1 to 20 of 143 for “"Compression Tests"”.
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Geosynthetic Reinforced Soil: Numerical and Mathematical Analysis of Laboratory Triaxial Compression Tests
… analyses were performed for laboratory tests obtained from the published literature of GRS under triaxial compression in consolidated-drained conditions. A three-dimensional numerical model was developed using FLAC3D. An existing constitutive model for the soil component was modified to …
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Experimental analysis of the post-failure behavior of coal and rock under laboratory compression tests
… to the failure path observed in a conventional compression tests. Researchers in past had used stiff system for generating the post failure behavior of the rock and the results produced from these tests were applied to tunneling and hard rock mining. In addition, with the advent of computing …
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Estabilização de um solo fino laterítico pelo ácido fosfórico
… work was carried out mainly through unconfined compression tests in order to observe the influence on strength of the following variables. I- Percentage of phosphoric acid (on a dry soil weight basis); II- Amount of solution used in compacting the soil; III- Curing time; IV- Compaction energy; …
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Investigation of curved composite panels under high-g loading
… panels. Experimentally, controlled axial compression tests and high-g tests were performed to determine the buckling response of the panels. The buckling response, including critical loads and mode shapes, was obtained for the controlled axial compression tests. The high-g tests …
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Investigation of Elastic Parameters and Pavement Modeling With Eps Geofoam
… rely on input elastic parameters derived from compression tests on small size samples. Young's modulus and Poisson's ratio are parameters required to model isotropic and homogenous material behavior. For the most widely used EPS density grade of 20 Kg/m3 (1.25 pcf), Young's modulus of 4 MPa and …
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Neural Network-Based Constitutive Modeling of Granular Material
… models using the results of drained triaxial compression tests with end friction.
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Manufacturing Quality of Carbon/Epoxy IsoTruss (R) Reinforced Concrete Structures
… IsoTruss® structures with rounded nodes.</p> <p>Compression tests were performed on 3.0 ft (0.91 m) long sections taken from the ends of each of the two 30 ft (9.14 m) long IsoTruss® grid structures manufactured. Fiber volume fraction, void fraction, and cross section area inspections were …
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Characterization of Stoichiometric and Aging Effects on NiTiHf High Temperature Shape Memory Alloys
… small irrecoverable strain during load biased tests. The addition of Hf is more attractive than Pt and Pd due to the fact that Hf has a lower cost. Four NiTiHf alloys with different chemical compositions spanning stoichiometry were used to analyze microstructure and mechanical behavior. …
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Influence of sand friction angle, grout stiffness, and confinement on the behavior of acrylamide and sodium silicate grouted sand
… To achieve the stated objective, a series of tests were performed to characterize the friction angle of the different sands at the same void ratio/porosity. In a separate set of tests, friction angle values were controlled and grouped to investigate the influence of sand void ratio. Then, …
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Influence of temper condition on the nonlinear stress-strain behavior of boron-aluminum
… In addition to monotonic tension and compression tests, tension-tension, compression-compression, and tension-compression tests were conducted to study the effects of cyclic loading. The laminates studied were [0], [90], [±45]<sub>S</sub>, [0/±45/0]<sub>S</sub>, [0/±45]<sub>S</sub>, …
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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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Processing, Microstructural And Mechanical Characterization Of Mechanically Alloyed Al-al2o3 Nanocomposites
… composites was investigated. Nanoindentation and compression tests were performed to characterize the composite material. Yield strength of 515 MPa, compressive strength of 685 MPa and elastic modulus of 36 GPa were obtained from compression tests. Nanoindentation results gave the yield strength …
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Low to high strain rate deformation of amorphous polymers : experiments and modeling
… spectrum of strain rates was achieved in tension/compression tests using a dynamic mechanical analyzer (DMA), a servo-hydraulic testing machine and a split-Hopkinson pressure bar. Tension tests on the DMA were used to characterize the time-temperature dependence of the elastic storage moduli and …
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Ensaios de extrusão de barras entre matrizes de perfil sigmoidal
Preliminarily, simple and plane-strain compression tests were made with pure and commercial lead in order to determine their isotropy and work-hardening conditions. Strip-extrusion experiments were afterwards made with a sigmoidal die profile for the maximum reduction condition, and with a straight …
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Numerical Methods for Predicting the Dynamic Crushing Response and Energy Absorption of Composite Aluminum Honeycomb Sandwich Structures
… or death in a head-on collision. Experimental compression tests were used to calibrate the aluminum honeycomb core with material type 26 (MAT 26, honeycomb). A published composite tensile test was used to validate the use of material type 22 (MAT 22, composite damage) for laminates. Finally, a …
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Prediction modelling of pallet overhang on box compression strength
Accurate prediction of box compression strength (BCT) loss resulting from pallet overhang is critical for maintaining the integrity of corrugated packaging in global logistics. This study presents an expanded empirical analysis and predictive modelling framework to quantify the impact of pallet …
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Instabilidade de estruturas metálicas planas compostas de perfis de chapa dobrada
… is assessed by experimental results from bending-compression tests perfomed on cold-formed steel columns. The proposed procedure is applied to several practical examples of plane trusses to demonstrate its potentiality.
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Sobre uma nova relação índice de vazios tensão em solos
… characteristics of soils subjected to oedometric compression tests is presented. A critical analysis of the empirical relationship between vertical effective stress (σ’v) and specific volume (v) is made. From this analysis a new relationship is proposed, with a rational basis, for the …
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Compression testing and measurement of material properties of a double network hydrogel
… were tested under compressive loads in cyclic compression tests and stress relaxation tests. A viscoelastic model was applied and material properties were calculated using the experimental data. The elastic modulus of these PAAm-alginate gels was found to be 35kPa, while the viscosity, [eta], …
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Design of fixtures and specimens for high strain-rate tensile testing on a drop tower
Drop towers are used to perform mechanical tests at strain rates similar to those experienced in automobile crashes. By their nature, drop towers are configured to perform compression tests only. This project aims to design a set of fixtures and specimens to allow the machine to perform tensile …
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