Results 301 to 310 of about 440,511 (349)

Test Method for Impedance and Absorption of Acoustical Materials by Impedance Tube Method

, 2008
  +9 more sources

Experimental Test of the Acoustic-Impedance Model for Underwater Blast Wave Transmission through Plate Materials

Journal of Engineering Mechanics, 2017
AbstractPrevious work has shown that the acoustic-impedance model does not accurately predict blast wave transmission through plates of 10 different materials in air.
Michael Courtney, Amy Courtney, Elijah Courtney, Lubov Andrusiv   +3 more
openaire   +3 more sources

Test Method for Impedance and Absorption of Acoustical Materials Using a Tube, Two Microphones and a Digital Frequency Analysis System

, 2008
  +11 more sources

Grazing Flow Acoustic Impedance Testing for the NASA AST Program

8th AIAA/CEAS Aeroacoustics Conference & Exhibit, 2002
Robert K. Kunze, Judith M. Gallman
openaire   +2 more sources

Acoustic Material Testing Using Impedance Tube

Sourabh Dogra, Arpan Gupta
  +4 more sources

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Seismic Acoustic Impedance Inversion Using Reweighted L1-Norm Sparse Constraint

IEEE Geoscience and Remote Sensing Letters, 2022
Sparse impedance inversion is widely applied for hydrocarbon prediction. Due to the low sparseness of traditional sparse constraints, pseudolayer and low-resolution problems still exist.
Liangsheng He, Hao Wu, Xiaotao Wen, Jiachun You   +3 more
semanticscholar   +1 more source

Broadband Electrical Impedance Matching of Transmitter Transducer for Acoustic Logging While Drilling Tool

IEEE Sensors Journal, 2022
An electrical impedance-matching network (EIMN) is proposed to achieve a broad transmitter transducer bandwidth for the acoustic logging while drilling tool.
Y. Gou, Xin Fu
semanticscholar   +1 more source

Satellite vibration isolation using periodic acoustic black hole structures with ultrawide bandgap

Journal of Vibration and Acoustics, 2022
A lightweight whole-spacecraft vibration isolation system with broadband vibration attenuation capability is of great significance to the protection of satellites during the launch phase.
Xiaofei Lyu, H. Sheng, Meng-Xin He, Qian Ding, L.H. Tang, Tianzhi Yang   +5 more
semanticscholar   +1 more source

Passive Impedance Sensing Using a SAW Resonator-Coupled Biosensor for Zero-Power Wearable Applications

IEEE Sensors Journal, 2022
A bio-sensing scheme, which acquires impedance information of a capacitive biosensor by using the reflected RF signal from a surface acoustic wave (SAW) resonator connected to the biosensor, is proposed. This technique requires no power to be supplied to
Xicai Yue, J. Kiely, R. Luxton, Boyang Chen, C. McLeod, Emanuel Manos Drakakis   +5 more
semanticscholar   +1 more source

[Measurement of changes of acoustic impedance as a test method for evaluation of pressure in the middle ear].

Il Valsalva, 1968
Walter Mozzo
openaire   +3 more sources