Results 21 to 30 of about 6,542 (145)

The focusing of weak shock waves [PDF]

open access: yes, 1976
This paper reports an experimental investigation, using shadowgraphs and pressure measurements, of the detailed behaviour of converging weak shock waves near three different kinds of focus.
Kulkarny, V. A., Sturtevant, B.
core   +1 more source

Sensorimotor Adaptation of Speech Using Real-time Articulatory Resynthesis [PDF]

open access: yes, 2014
Sensorimotor adaptation is an important focus in the study of motor learning for non-disordered speech, but has yet to be studied substantially for speech rehabilitation.
Berry, Jeffrey J.   +2 more
core   +1 more source

Controlling Light Through Optical Disordered Media : Transmission Matrix Approach [PDF]

open access: yes, 2011
We experimentally measure the monochromatic transmission matrix (TM) of an optical multiple scattering medium using a spatial light modulator together with a phase-shifting interferometry measurement method.
A C Boccara   +14 more
core   +3 more sources

Photoacoustic generation of focused quasi-unipolar pressure pulses [PDF]

open access: yes, 2010
The photoacoustic effect was employed to generate short-duration quasi-unipolar acoustic pressure pulses in both planar and spherically focused geometries.
Maslov, Konstantin   +2 more
core   +1 more source

Design and Optimization of Piezoelectric Diaphragm for Self-Powered Acoustic Sensor

open access: yesEngineering Research Express, 2023
Abstract A self-powered piezoelectric material-based sensor has miniaturization and mass production capabilities. The finite element analysis shows results prior to device fabrication, which discover potential defects in the design, improve sensor performance, and lead to cost-effective fabrication.
Mohini Sawane, Mahanth Prasad
openaire   +1 more source

Development of a Tunable Electromechanical Acoustic Liner for Engine Nacelles [PDF]

open access: yes, 2007
This report describes the development of a tunable electromechanical Helmholtz resonator (EMHR) for engine nacelles using smart materials technology. This effort addresses both near-term and long-term goals for tunable electromechanical acoustic liner ...
Cattafesta, Louis N., III   +2 more
core   +1 more source

Microgravity acoustic mixing for particle cloud combustors [PDF]

open access: yes
Experimental and theoretical investigations of acoustic mixing procedures designed to uniformly distribute fuel particles in a combustion tube for application in the proposed Particle Cloud Combustion Experiment (PCCE) are described.
Pla, Frederic, Rubinstein, Robert I.
core   +1 more source

Mixing fuel particles for space combustion research using acoustics [PDF]

open access: yes
Part of the microgravity science to be conducted aboard the Shuttle (STS) involves combustion using solids, particles, and liquid droplets. The central experimental facts needed for characterization of premixed quiescent particle cloud flames cannot be ...
Burns, Robert J.   +2 more
core   +1 more source

Modeling Of Microelectromechanical Systems Diaphragm Based Acoustic Sensor

open access: yes, 2018
{"references": ["Liew Hui Fang et.al, ''A Review of Techniques Design Acoustic Energy Harvesting'', 2015 IEEE Student Conference on Research and Development (SCOReD); DOI: 978-1-4673-9572-4/15, 2015 IEEE.", "Sherif Saleh Ahmad et.al, Electronics Research Institute, Cairo, Egypt, CEERI, Pilani, India, \"Design and Fabrication of Piezoelectric Acoustic ...
Hegde, Vasudha   +4 more
openaire   +1 more source

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