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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.

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At least 91 records · Page 5

All sources NASA NTRS DOE OSTI

DOE OSTI2017

Mitigation of Structural-Acoustic Mode Coupling in a Modal Test of a Hollow Structure.

Abstract not provided.

Schultz, Ryan↗

DOE OSTI2018

Dynamic Substructuring Applied to the Decoupling of an Acoustic-structure System.

Abstract not provided.

Schultz, Ryan↗

DOE OSTI2019

Electrical and acoustic vibroscopic measurements for determining carbon nanotube fiber linear density

Not provided.

Chemistry↗

DOE OSTI2014

Vibro-Acoustic Propagation of Gear Dynamics in a Gear-Bearing-Housing System

Abstract not provided

17 WIND ENERGY↗

DOE OSTI2018

Acoustic actuators based on the resonance of an acoustic-film system applied to the actuation of soft robots

Not Available

Shui, Langquan↗

DOE OSTI2020

Unveiling damage mechanisms of chromium-coated zirconium-based fuel claddings by coupling digital image correlation and acoustic emission

Not provided.

Materials Science↗

DOE OSTI2021

Evaluation of ASR in concrete using acoustic emission and deep learning

Not provided.

Nuclear Science & Technology↗

DOE OSTI2018

Ultrasonic acoustic wave velocities of neighborite (NaMgF3) across orthorhombic to cubic phase boundary at high P-T

Not Available

Li, Li↗

DOE OSTI2019

Glass fracture by focusing of laser-generated nanosecond surface acoustic waves

Not Available

Veysset, David↗

DOE OSTI2013

Development of a High-Throughput Laser-Induced Acoustic Desorption Probe and Raster Sampling For Laser-Induced Acoustic Desorption/Atmospheric Pressure Chemical Ionization

Explore the source record for details and available documents.

catalysis (homogeneous), catalysis (heterogeneous)↗

DOE OSTI2013

Lifetime of sub-THz coherent acoustic phonons in a GaAs-AlAs superlattice

Here we measure the lifetime of the zone-center 340 GHz longitudinal phonon mode in a GaAs-AlAs superlattice excited and probed with femtosecond laser pulses. By comparing measurements conducted at room temperature and liquid nitrogen temperature, we separate the intrinsic (phonon-phonon scattering) and extrinsic contributions to phonon relaxation. The estimated room temperature intrinsic lifetime of 0.95 ns is compared to available calculations and experimental data for bulk GaAs. We conclude that ~0.3 THz phonons are in the transition zone between Akhiezer and Landau-Rumer regimes of phonon-phonon relaxation at room temperature.

71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSIC↗

DOE OSTI2016