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Showing 1 to 20 of 60 for “"rate effects"”.
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Rate Effects in Fine Grained Soils
The strain rate dependent behaviour of fine grained soils is an important aspect of geotechnical engineering. During dynamic or rapid events such as earthquakes and rapid pile testing, a fine grained soil will display significantly different behaviour than may be observed over the long life span of …
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STRAIN-HARDENING AND RATE EFFECTS IN PLASTICITY
In this study the effects of strain-hardening and rate sensitivity in plasticity theory are investigated. Because the method of characteristics cannot be applied to problems involving rate dependent yield conditions (65) therefore a different procedure is developed. In this investigation of large …
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Strain rate effects on inelastic response of beams
Thesis (M.S.)--Michigan State University. Dept. of Civil Engineering, 1965
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Loading Rate Effects on Axial Pile Capacity in Clays
… can damage the pile and may not produce accurate results. There is a relatively new testing method called the Statnamic Testing Method which tests foundation piles at a very fast rate, but still slower than with dynamic tests. As the rate at which load is applied to a test pile increases, the …
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Strain rate effects on the behavior of shape memory alloys
Thesis (S.B.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, 2013.
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Computerized dryer monitoring and drying rate effects on seed corn quality
… data exceeded pre-established limits. Airflow rate and average moisture content for the ear corn in the bins were estimated from the data. Use of this monitoring system in a production seed dryer should enhance dryer performance and result in higher quality seed by reducing the number and …
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Strain rate effects on tensile fracture and damage tolerance of composite laminates
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1992.
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Temperature and Axial Strain Rate Effects on Micromechanical Behavior in Triaxially Compressed Marbles
… emission measurements were used to survey the effects of temperature (T) and axial strain rate ((epsilon)) variations on micromechanical behavior in triaxially compressed marbles. Thirty-five tests were run on low porosity, homogeneous marble samples with relatively uniform calcite grain sizes …
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Dynamics of F0 planning and production: contextual and rate effects on Thai tone gestures
… as a function of following tonal context, speech rate, and their interaction. This experiment demonstrates the existence of systematic anticipatory dissimilatory contextual tonal variation effects. Experiment 2 presents the result of an acoustic and electromagnetic articulography (EMA) …
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A Numerical Investigation of Loading Rate Effects on Pre-Cracked Charpy V-Notch Specimens
To quantify the effects of loading rate on ductile crack growth in CVN specimens, plane strain, finite element analyses are used to model ductile crack extension in specimens subjected to quasi-static and impact loading. The Gurson-Tvergaard dilatant plasticity model for voided materials describes …
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Dose-rate-effects in XRCC1 wild-type and mutant CHO cell lines using An ²⁴¹AM source
This work explores the effects of low-dose-rate radiation on both the AA8 (wild-type CHO cells) and EM9 (XRCC1 null CHO mutants) cell lines. In particular, this study performed clonogenic survival and growth assays to determine the radiations/ effect on the cells proliferative capacity. It was …
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Assessment of fracture properties and rate effects on fracture of materials by micro scratching: application to gas shale
… geometry, loading conditions and prescribed rates. In this thesis, by combining multi-scale experiments and advanced theoretical modeling, we provide a means to characterize the intrinsic fracture toughness using microscopic scratch tests. The scratch test consists in plowing and cutting with …
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Tensile, Creep, and Fatigue Behaviors of Thermoplastics Including Thickness, Mold Flow Direction, Mean Stress, Temperature, and Loading Rate Effects
… behaviors of two thermoplastic polymers. The effects considered in this experimental study include mold flow direction, thickness, mean stress, temperature, and loading rate. Specimens were subjected to monotonic tension, creep, and load-controlled fatigue tests. The two materials considered …
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Unusual Electron Transfer Rate Effects due to Pyridyl Ring Substituents and Trace Group VIII b Hexacyano Complexes as Added Salts
<p>The rates of pseudo-self-exchange electron transfer reactions between [(NH<sub>3</sub>)<sub>5</sub>Ru<sup>II</sup>L]<sup>2+</sup> and [(NH<sub>3</sub>)<sub>5</sub>Ru<sup>III</sup>L’]<sup>3+ </sup> at reactant concentrations of 1.0 х 10<sup>-4</sup> M (where L, L’ = substituted pyridines) and the …
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Rate Effect Behaviour of Different Clays from High Speed Triaxial Element Testing
The rate effect response of three natural clays has been studied using high-speed triaxial element testing at axial strain rates up to 100,000 %/hr. Strain rate effects lead to increasing soil shear strength in fine grained soils under undrained conditions and are important for accurate predictions …
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In-Situ Geotechnical Characterization of Soft Estuarine Surficial Sediments Using a Portable Free Fall Penetrometer
… parameters such as the cone factor and strain rate factor hampered the derivation of geotechnical design parameters such as undrained shear strength. This challenge applies particularly in areas of more rare seabed soil conditions such as very soft estuarine sediments. This study aims to …
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