Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 6 of 6 for “"Acoustic transfer"”.
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Acoustic Transfer Functions Derived from Finite Element Modeling for Thermoacoustic Stability Predictions of Gas Turbine Engines
Acoustic Transfer Functions Derived from Finite Element Modeling for Thermoacoustic Stability Predictions of Gas Turbine Engines Design and prediction of thermoacoustic instabilities is a major challenge in aerospace propulsion and the operation of power generating gas turbine engines. This is a …
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Characterization of a robot arm for use in acoustic experiments
… I also made some initial measurements of the acoustic transfer function from the speaker on the robot arm to a microphone in the center of the room as a function of speaker location. I wrote and implemented code in MATLAB to control placement on the robot arm and record experimental …
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Feasibility of Passive Acoustic Detection of Coronary Artery Disease Utilizing Source Separation
… data based upon knowledge of the acoustic transfer within the chest. The validity of the proposed approach was examined using transfer functions which were calculated for 14 physiologically relevant locations within the chest using a 2-D Finite Element Model (FEM) generated from …
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Scattering Matrix Analysis of Surface Acoustic Wave Reflectors and Transducers
… matrix consisting of one electrical and two acoustic ports. These scattering parameter analytical expressions are functions of material constants, electrode geometry, and frequency. The three port single electrode scattering matrices are acoustically cascaded to produce a three port device …
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Acoustic Method for Detection Large Pneumothoraxes in the Out-of-Hospital Environment
… austere environments. We propose to evaluate the acoustic transfer function of the human thorax for signs that a pocket of air or blood has accumulated within the pleural space. In an attempt to validate this hypothesis, we constructed a phantom model of the human thorax with artificial lungs and …