Sökning: "mechanical impedance"
Visar resultat 21 - 25 av 97 avhandlingar innehållade orden mechanical impedance.
21. Application of the Boundary Element Method to combustion noise and half-space problems
Sammanfattning : The Boundary-Element-Method (BEM) is a powerful and established tool in computational acoustics. This thesis aims at an enhancement of the method towards combustion noise and half-space problems.First, it is directly coupled to an incompressible Large Eddy Simulation (LES) to calculate the sound radiation of open flames. LÄS MER
22. Integration of Surface Acoustic Wave and Microfluidic Technologies for Liquid-Phase Sensing Applications
Sammanfattning : This thesis discusses a new concept for construction of a novel SAW in-liquid sensor employing surface acoustic wave resonance (SAR) in a one-port configuration. In this concept, the reflective gratings of a one-port SAW resonator are employed as mass loading-sensing elements, while the SAW transducer is protected from the measurement environment, reducing power losses significantly. LÄS MER
23. New methods for optimization of mechanical ventilation
Sammanfattning : Mechanical ventilation saves lives, but it is an intervention fraught with the potential for serious complications. Prevention of these complications has become the focus of research and critical care in the last twenty years. LÄS MER
24. Component and system design of a mild hybrid 48 V powertrain for a light vehicle
Sammanfattning : This thesis presents contributions in three areas relevant for the development of 48 V mild hybrid electric powertrains for cars. The first part comprises methodologies and extensive testing of lithium-ion battery cells in order to establish the electric and thermal performance using equivalent circuit models. LÄS MER
25. A study of the measurement of the acoustical ground impedance and its effects
Sammanfattning : .... LÄS MER