نتایج جستجو برای: stem shearing strength
تعداد نتایج: 485297 فیلتر نتایج به سال:
This study evaluates two mechanical properties, tensile strength and tear strength, of maxillofacial materials reinforced with functional polyhedral silsesquioxane (POSS) nanoparticles at 0.0, 0.5, 1.0, 2.0, and 5.0% (mass/mass) loading. Adding POSS was found to significantly affect the overall tensile strength and extensibility of the maxillofacial material. Significant differences were found ...
Aging of precipitation hardened alloys results in particle coarsening, which in turn affects the strength. In this study, the effect of particle size distribution on the strength of precipitation-hardened alloys was considered. To better represent real alloys, the particle radii were distributed using the Wagner and Lifshitz and Slyozov (WLS) particle size distribution theory. The dislocation m...
The effect of particle size on shear strength of granular materials are investigated using direct shear tests. Small direct shear test (60 mm by 60 mm by 24 mm deep) were conducted for particles passing the sieves with opening size of 2.36 mm. Meanwhile, particles passing the standard 20 mm sieves were tested using large direct shear test (300 mm by 300 mm by 200 mm deep). The large direct shea...
— The shearing strength and volumetric relationship of granular materials change notably with a variation of confining pressure. In this study the effect confining pressure on the mechanical behavior of granular materials were observed using discrete element method (DEM). The triaxial tests were conducted on seven specimens covering a range from extremely low to high confining pressures. Each i...
DNA fragmentation down to a precise fragment size is important for biomedical applications, disease determination, gene therapy and shotgun sequencing. In this work, a cheap, easy to operate and high efficiency DNA fragmentation method is demonstrated based on hydrodynamic shearing in a bubbling system. We expect that hydrodynamic forces generated during the bubbling process shear the DNA molec...
Angora goats are known to be vulnerable to cold stress, especially after shearing, but their thermoregulatory responses to shearing have not been measured. We recorded activity, and abdominal and subcutaneous temperatures, for 10 days pre-shearing and post-shearing, in 10 Angora goats inhabiting the succulent thicket of the Eastern Cape, South Africa, in both March (late summer) and September (...
Kinetics of flocculated illite suspensions affected by ionic strength, pH, and hydrodynamic shearing
An experimental investigation is presented of the kinetics particle size distributions (PSDs) flocculated illite suspensions subject to varying ionic strength, pH, and hydrodynamic shearing. A total 21 PSD measurements were conducted by analyzing high-resolution optical images flocs extracted from with a concentration 0.4 g/L prepared at four strengths (i.e., 0, 0.09, 0.17, 0.60 M NaCl solution...
Study of wear particles formation at single asperity contact: An experimental and numerical approach
Wear particles generated due to the relative sliding of roll and sheet metal in bite are one main factors that contaminate surface a cold rolled steel sheet. The details wear mechanisms contact individual roll-sheet asperities define total amount generated. In this paper, micro-mechanical experimental approach is coupled with material point method (MPM) scratch simulations study friction behavi...
electromagnetic forming is a high energy rate forming process in which an electromagnetic lorentz body force is used for deformation of products. in this article, electromagnetic forming process was simulated for the assembly of parts as an innovative method. the effect of important process parameters such as discharge energy, radius and width of rectangular groove on the strength of the asse...
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