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Showing 1 to 14 of 14 for “"Recovery Tests"”.
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The nonlinear viscoelastic behavior of adhesives and chopped fiber composites
… 1113-2) as determined by creep and creep recovery tests is presented. A nonlinear viscoelastic characterization method of Schapery is presented and applied to the data for both materials. The nonlinear constitutive equation so obtained is used together with a delayed failure law postulated …
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Actuation of shape memory polymer using magnetic fields for applications in medical devices
… which are delivered via catheters. A variety of tests were performed to determine the feasibility of this new approach to shape memory polymer actuation. Calorimetry tests were performed to quantify heat generation of various Nickel Zinc Ferrite particles. Dynamic Mechanical Thermal Analysis …
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In search of martensite : titanium-tantalum shape-memory alloy
… and superelastic behavior by means of hot oil recovery tests and were characterized through optical microscopy. Metallographs of some of the samples were taken throughout the processing and testing procedures in order to directly observe changes in microstructure..
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Evaluation of fecal glucocorticoid metabolite assays for short-term stressors and validation for stress monitoring in African herbivores
… FGM using parallelism and exogenous hormone recovery tests. Biological validations compare two groups with different levels of adrenal activity, due to exogenous stimulation. We collected samples from seven herbivore species, representing a wide taxonomic range. Our laboratory validation …
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Hydrogeological characterisation and water supply potential of Lebalelo South, Limpopo Province of South Africa
… planes. Step test, constant discharge test and recovery tests were conducted on all the boreholes to stress the borehole. This was used to determine a suitable and sustainable pumping rate of the aquifer. Pumping test data from the pumping period and recovery was evaluated and interpreted using …
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Discovery and Characterisation of Long-Period Exoplanets with TESS and CHEOPS
… suitable for CHEOPS follow-up by using injection-recovery tests and selecting BLS parameters based on typical duotransit properties. After running my pipeline on ∼ 40,000 stars, I discovered five duotransit systems that have since been observed by CHEOPS: HD 5806, TOI-5678, TIC 182992572, TIC …
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Optimising the Detection of Temperate, Terrestrial Planets around Ultra-Cool Dwarfs with SPECULOOS
… pipeline and performed transit injection-recovery tests to measure its detection efficiency. I concluded that worlds like TRAPPIST-1b, very short-period, rocky planets, are rare for these stellar hosts; otherwise, we would have already detected a small number. Several more years of …
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Linear and Nonlinear Viscoelastic Characterization of Proton Exchange Membranes and Stress Modeling for Fuel Cell Applications
… master curve. Longer term stress relaxation tests were conducted to validate the hygrothermal master curve. The Prony series coefficients determined based on the hygrothermal stress relaxation master curves were utilized in a linear viscoelastic stress model. The nonlinear viscoelastic …
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The yielding transition in soft materials
… scattering, imaging, and velocimetric tests. The tests currently available for characterizing and understanding the yielding transition are varied, but it is unclear which, if any, are the correct ones to use in practice. This thesis focuses on determining and refining the experimental …
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Development and validation of a novel testing procedure for the evaluation of rutting susceptibility of bituminous binders.
… correlating them with parameters resulted from tests carried out on their corresponding mixtures. Several factors influence the occurrence of rutting in asphalt mixtures including aggregate properties, composition (aggregate gradation and binder content), and volumetric. However Asphalt binders …
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A model treating tensile deformation of semi-crystalline polymers
… strain relationships were always accompanied by recovery tests. By carrying out a step-wise stretching, interrupted by unloading-loading cycles, it is possible to determine for each imposed strain which part is irreversible and which part recovers. It was found that the recoverable, elastic …
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Understanding the yielding transition in soft materials
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2025-02-04 without embargo terms
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The Impact of Surface Modified Nanoparticles on the Performance of Polymer Solutions for Heavy Oil Recovery
The use of polymer flooding as an enhanced oil recovery (EOR) method to achieve a more uniform volumetric sweep of the reservoir has increased over the past ten years. However, chemical, thermal and mechanical degradation of the polymers reduce their viscosity, which affects their performance. …
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Design and evaluation of open-circuit respiration chambers for beef cattle
… concern and often only verified through release-recovery methods, but should also include documentation and quantification of measurement uncertainty. Research with the chamber technique is primarily focused on the application for understanding relationships between ruminant CH4 emissions and …