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You searched on: Author: daniel hussey

Displaying records 21 to 30 of 43 records.
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21. Statistical Learning Methods for Neutron Transmission Tomography of Fuel Cells
Published: 7/8/2008
Authors: Kevin J Coakley, Dominic F. (Dominic F.) Vecchia, Daniel S Hussey
Abstract: In a fuel cell, water is formed as a by-product of the reaction between hydrogen and oxygen. As a neutron beam passes through a fuel cell, it can undergo s-wave scattering. For the dry and wet states of a fuel cell, there are spatially varying neutro ...

22. Neutron Imaging Investigation of Liquid Water Distribution in and the Performance of a PEM Fuel Cell
Published: 7/1/2008
Authors: J Park, X Li, D Tran, T Abdel-Baset, Daniel S Hussey, David L Jacobson, Muhammad Arif
Abstract: In this study neutron radiography is applied to investigate the performance of a PEM fuel cell based on the effect of liquid water accumulation in the cell. Dynamic performance tests have been carried out on a PEM fuel cell with a specially designed ...

23. Neutron Collimation with Microchannel Plates: Calibration of Existing Technology and Near Future Possibilities
Published: 11/1/2007
Authors: Robert G Downing, Daniel S Hussey, A S Tremsin, David F R Mildner, W B Feller, David L Jacobson, Muhammad Arif, O H Siegmund

24. Feasibility of Single-View Coded Source Neutron Transmission Tomography
Published: 9/27/2007
Authors: K J Coakley, Daniel S Hussey

25. In-Situ Investigation of Water Transport in an Operating PEM Fuel Cell Using Neutron Radiography: Part 2 - Transient Water Accumulation in an Interdigitated Cathode Flow Field
Published: 7/27/2007
Authors: Jon P Owejan, T Trabold, David L Jacobson, D Baker, Daniel S Hussey, Muhammad Arif
Abstract: An interdigitated cathode flow field was tested in-situ with neutron radiography to measure the water transport through the porous gas diffusion layer in a PEM fuel cell. Constant current density to open circuit cycles were tested and the resulting ...

26. Neutron Images of the Through-Plane Water Distribution of an Operating PEM Fuel Cell
Published: 7/27/2007
Authors: Daniel S Hussey, David L Jacobson, Muhammad Arif, Jon P Owejan, Jeffrey J Gagliardo, T Trabold
Abstract: Neutron imaging has proven an invaluable tool for water metrology in operating proton exchange membrane fuel cells. Due to limitations in scintillator-based detector resolution, neutron imaging has been applied only to assessing the in-plane water di ...

27. Voltage Instability in a Simulated Fuel Cell Stack Correlated to Cathode Water Accumulation
Published: 7/22/2007
Authors: Jon P Owejan, T Trabold, Jeffrey J Gagliardo, Robert N Carter, Daniel S Hussey, David L Jacobson, Muhammad Arif
Abstract: Single fuel cells running independently are often used for fundamental studies of water transport. It is also necessary to assess the dynamic behavior of fuel cell stacks comprised of multiple cells arranged in series, thus providing many paths for f ...

28. Neutron Collimation With Microchannel Plates: Calibration of Existing Technology and Near
Published: 4/1/2007
Authors: A S Tremsin, Daniel S Hussey, David L Jacobson, Muhammad Arif, Robert G Downing, W B Feller, David F R Mildner
Abstract: A new type of high performance and compact neutron collimator can be manufactured from Gd- or B-doped microchannel plates (MCPs). Structures only a few mm thick have very narrow rocking curves and high out-of-angle rejection ratios, as observed previ ...

29. A High Spatial Resolution Event Counting Neutron Detector Using Microchannel Plates and Cross Delay Line Readout
Published: 1/1/2007
Authors: O H Siegmund, A Martin, W B Feller, Muhammad Arif, Daniel S Hussey, David L Jacobson

30. Feasibility of Coded Source Neutron Transmission Tomography
Published: 1/1/2007
Authors: Kevin J Coakley, Daniel S Hussey
Abstract: In a simulation experiment, we study the feasibility of coded source neutron transmission tomography for imaging water density in fuel cells at the NIST neutron imaging facility. In standard two-dimensional transmission tomography, one reconstructs a ...

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