Strategies for Shaker Placement for Impedance-Matched Multi-Axis Testing.
Abstract not provided.
Rohe, Daniel Peter↗
SEARCH · Engineering Papers
Results for “testing”
Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.
Quote a phrase for an exact phrase match. Source license links do not imply unrestricted reuse.
A demonstration of force estimation and regularization methods for multi-shaker testing.
Abstract not provided.
Schultz, Ryan↗
Input signal synthesis for open-loop multiple-input/multiple-output testing.
Abstract not provided.
Schultz, Ryan↗
Flight Environments Demonstrator: Part I Experiment Design & Test Planning.
Abstract not provided.
Owens, Brian Christopher↗
Use of Topology Optimization to Design Shock and Vibration Test Fixtures.
Abstract not provided.
Schoenherr, Tyler Franklin↗
Evaluating the Influence of Size Effects on Load-Displacement Behavior and Failure in Threaded Fasteners Part I: Experimental Testing.
Abstract not provided.
Bosiljevac, Thomas↗
Evaluation of Microphone Density for Finite Element Source Inversion Simulation of a Laboratory Acoustic Test.
Abstract not provided.
Schultz, Ryan↗
Performing Direct-Field Acoustic Test Environments on a Sandia Flight System to Provide Data for Finite Element Simulation.
Abstract not provided.
Stasiunas, Eric Carl↗
Modal Testing of a Nose Cone using Three-Dimensional Scanning Laser Doppler Vibrometry.
Abstract not provided.
Rohe, Daniel Peter↗
Compression Testing of Aged Low Density Flexible Polyurethane Foam.
Abstract not provided.
Werner, Brian T.↗
Strategies for Testing Large Aerospace Structures with 3D SLDV.
Abstract not provided.
Rohe, Daniel Peter↗
Mitigation of Structural-Acoustic Mode Coupling in a Modal Test of a Hollow Structure.
Abstract not provided.
Schultz, Ryan↗
A Simpler Formulation for Effective Mass Calculated from Experimental Free Mode Shapes of a Test Article on a Fixture.
Abstract not provided.
Mayes, Randall L.↗
The Cross Spectrum in Multiple Input Multiple Response Vibration Testing.
Abstract not provided.
Hunter, Norman↗
Development of "Dropkinson" bar for intermediate strain rate testing.
Abstract not provided.
Song, Bo↗
Best Practices and Testing Protocols for Benchmarking ORR Activities of Fuel Cell Electrocatalysts Using Rotating Disk Electrode
Abstract Thin-film-rotating disk electrodes (TF-RDEs) are the half-cell electrochemical system of choice for rapid screening of oxygen reduction reaction (ORR) activity of novel Pt supported on carbon black supports (Pt/C) electrocatalysts. It has been shown that the magnitude of the measured ORR activity and reproducibility are highly dependent on the system cleanliness, evaluation protocols, and operating conditions as well as ink formulation, composition, film drying, and the resultant film thickness and uniformity. Accurate benchmarks of baseline Pt/C catalysts evaluated using standardized protocols and best practices are necessary to expedite ultra-low-platinum group metal (PGM) catalyst development that is crucial for the imminent commercialization of fuel cell vehicles. We report results of evaluation in three independent laboratories of Pt/C electrocatalysts provided by commercial fuel cell catalyst manufacturers (Johnson Matthey, Umicore, Tanaka Kikinzoku Kogyo—TKK). The studies were conducted using identical evaluation protocols/ink formulation/film fabrication albeit employing unique electrochemical cell designs specific to each laboratory. The ORR activities reported in this work provide a baseline and criteria for selection and scale-up of novel high activity ORR electrocatalysts for implementation in proton exchange membrane fuel cells (PEMFCs).
Kocha, Shyam S.↗