Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 13 of 13 for “"Probe Geometry"”.
-
Assessment of fracture properties and rate effects on fracture of materials by micro scratching: application to gas shale
… respect to external factors such as specimen 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 …
-
A Bayesian Approach to Spike Sorting of Neural Data via Source Localization
… by individual neurons using a thin, conducting probe inserted into the brain of an animal, such recordings allow us to understand how groups of neurons process and encode information about the animal and its environment, and are one of the basic tools of modern neuroscience. However, these …
-
Multi-mode two-dimensional infrared spectroscopy of peptides and proteins
… for acquisition of 2D IR spectra in the pump-probe geometry reduces overall experimental complexity. These technological advances extend the capabilities of 2D IR to further resolve inter- and intramolecular couplings, relaxation pathways and structural kinetics in complex systems. …
-
Turbulence measurements in drag reducing flow
… of the frequency response of hot-film wedge probes in viscoelastic fluids established their reliability as measuring devices and demonstrated that the objections raised by Metzner and Astarita (77) are not valid for wedge probes. The structure of turbulence in drag reducing soap and polymer …
-
Mount Interference and Flow Angle Impacts on Unshielded Total Temperature Probes
… common sources of error in total temperature probe measurements. Numerous studies have been performed in prior literature to account for simple cases of both errors. However, the impacts of a mounting strut and freestream flow angle on conduction error and aerodynamic error have not been …
-
Total Temperature Probe Performance for Subsonic Flows using Mixed Fidelity Modeling
… measure these flows, immersed thermocouple based probes remain highly desirable due to well established practices for probe design and implementation in typical industrial flow applications. However, as engine manufacturers continue to push towards higher maximum cycle temperatures and smaller …
-
Impact of Total Temperature Probe of Geometry on Sensor Flow and Heat Transfer
… measured is through the use of total temperature probes. Previous research both at Virginia Tech and in outside studies has been performed to quantify the errors associated with total temperature probe measurements. This work has led to the development of low-order models which can be used to …
-
Multi-Fidelity Study of Complex Multi-Scale Flows Concerning Stagnation Probes
… loss sources related to the use of stagnation probes in aero-engines through the use of RANS and high fidelity wall-resolved Large Eddy Simulations (LES), and help develop methods and techniques to aid in improving their design to reduce the impact of these losses. The measurement of stagnation …
-
Viscoelastic and nanomechanical behaviors of polymeric materials
… we propose a geometrical model for the Berkovich probe to quantitatively estimate the surface detection error from the reported depth dependent universal hardness behaviors for PDMS. In addition, the effect of surface detection error on the determination of mechanical properties for polymers is …
-
Developments in time-resolved ultrafast imaging and spectroscopy at terahertz frequencies
… platform and in a more typical free space geometry. In the waveguide approach, THz generation, detection, and manipulation is self-contained in an on-chip system that we term the polaritonics platform, which simply consists of a single slab of an electro-optic (EO) crystal called lithium …
-
Analyses and interpretation of tapered piezoprobe and application to offshore pile design
… validation of a newly designed tapered piezoprobe penetrometer that is currently being used in offshore site investigation. The new device measures pore pressures at the tip of a 1/4" diameter extension piece that connects through a tapered section to conventional drill rods. By accelerating …
-
Conformal Tracking For Virtual Environments
… in a rigid configuration is called a tracking probe. The performance of marker-based tracking systems depends upon the fidelity of the pose estimates provided by tracking probes. The realization that tracking performance is linked to probe performance necessitates investigation into the design …
-
Reynolds number effects on the aerodynamics of compact axial compressors
… area traverses with a miniaturised five-hole probe at the rotor inlet, rotor exit and stator exit and a miniature hot-wire at the rotor exit. The probe was specifically designed and calibrated for the scale of the experiments and methods to improve the accuracy of the measurements have been …