Essays about: "strömningsakustik"
Found 4 essays containing the word strömningsakustik.
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1. Empirical Verification of an Acoustic Estimation of a Rocket Engine : A Comparison Between Estimated and Measured Noise of a Rocket Engine
University essay from KTH/Skolan för industriell teknik och management (ITM)Abstract : The noise of a rocket engine is a complex and complicated phenomenon which has been studied for more than half a century [1]. There are many sources to this noise, but due to its great potential impact to the surrounding structures, including the vehicle itself, it is important to have a model to estimate the acoustic environment the engine produces. READ MORE
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2. Acoustic absorption and reflection as traininterior design elements
University essay from KTH/MWL StrömningsakustikAbstract : Acoustic comfort in train compartments is discussed in relation to speech intelligibility. Passive acoustic design solutions were developed, resulting in two screen prototypes that use absorption and reflection to lower the level of speech intelligibility. READ MORE
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3. High frequency vibrations in chipping hammers
University essay from KTH/MWL StrömningsakustikAbstract : Percussive tools such as chipping hammers, riveting hammers and concrete breakers produce shock-type (impact) vibrations with large amount of vibration energy in the high frequency region (kHz). Reported injuries from shock-type and high frequency vibrations are higher occurrence of vascular disorders, myelin disruption, edema and reduced motor performance. READ MORE
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4. Sound transmission through double walls usingStatistical Energy Analysis
University essay from KTH/MWL StrömningsakustikAbstract : A new Statistical Energy Analysis (SEA) formulation for double walls isderived. The new formulation uses three elements to describe the double wall,one for each plate and the third for the cavity including the mass-controlledmodes of the plates. READ MORE
