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Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 12 of 12 for “"mechanical shear"”.
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Standoff screws functioning as mechanical shear connectors in composite joists
… in. diameter, standoff screw functioning as a mechanical shear connector are presented. In all tests, the base material, through which the screw was fastened, was fabricated out of back to back angle to simulate the top chord of an open web steel joist. Varied test parameters include: steel …
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Shear Forces, Floc Structure and their Impact on Anaerobic Digestion and Biosolids Stability
… floc structure and its interaction with shearing forces. Mesophilic digestion was studied in two modes of operation, convention high rate and internal recycle mode to enhanced digestion using a wet sludge disintegration device. The internal recycle system operated on the premise that …
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Development of Facilities for the Testing of Shear Stress Sensors
… constructed to enable development of novel shear stress measurement devices. Three facilities were designed, constructed and tested to progressively test the sensor: a calibration chamber to apply a mechanical shear stress under various temperatures and pressures, an impinging jet to test …
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An Investigation into the Mechanisms of Sludge Reduction Technologies
… can be broken into four large groups: mechanical, thermal, chemical and biological, although there is often overlap between groups. This research approached the evaluations of these technologies through several methods in the hopes of developing effective tools for predicting the …
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Standoff Screws Used In Composite Joists
… in. diameter Elco Grade 8 standoff screw as a mechanical shear connector in composite joists. Standoff screws are being investigated as an alternative to welded shear studs in short span composite joists. The data and results obtained from 106 pushout tests performed on the Elco Grade 8 …
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Further Investigation of Standoff Screws Used in Composite Joists
… in. diameter Elco Grade 8 standoff screw as a mechanical shear connector in composite joists. Standoff screws are being investigated as viable an alternative to welded shear studs in short span composite joists. The data and results obtained from 59 pushout tests performed on the 5/16 in. …
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Multi-Scale Assembly Methodologies of Poly(3-Hexylthiophene) Derivative Systems for Enhanced Optoelectronic Anisotropy
… systems, including solution processing and mechanical flexibility, conjugated polymers have become a burgeoning field of research with the hopes of producing cost-effective solution-based electronics. Importantly, optoelectronic device performance is heavily influenced by conjugated polymer …
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Genomic and microscopic dissection of large-scale chromatin compaction
… of DNA to enzymes or susceptibility to mechanical shear, and probe lower--level chromatin organization, primarily at the nucleosome level. Therefore, these existing measures of chromatin compaction may not translate to measurements of large-scale chromatin compaction. In this …
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Bed shear stress under wave runup on steep slopes
… measurements of swash hydrodynamics and bed shear stress were obtained for surging, collapsing, plunging and spilling swashes, in both medium and prototype scale fixed-bed laboratory wave flumes with steep slopes (1:3 and 1:6, respectively). The hydrodynamics of swash flows were found to …
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Nanoparticles as strengthening agents in polymer systems
… nanoparticles are produced solvent free using mechanical shear. The general nature of this method has been demonstrated for L-lysine-, stearate, and p-hydroxybenzoate-derived materials. The reaction rate and particle size is controlled by a combination of temperature and shear rate. The …
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Investigating the sink efficiencies of interfaces under irradiation
… experiment designed to investigate the mechanical shear strength of a Cu-Nb interface as a function of irradiation dose at different temperatures. This property is used as a proxy for understanding the degree to which irradiation affects the interface structure, and suggests that …
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Shear-induced alignment in block copolymer solutions
… in solution has been accomplished by using mechanical shear fields. Two pathways to monitore the achievement of aligned structures have been used: rheo-optical and in situ rheo-SAXS methods. The AC diblock copolymer and ABC triblock terpolymer with high molecular weights and different …