DEFINITION METHODS MECHANICAL CHARACTERISTICS OF SOUND ABSORPTION STRUCTURES
نویسندگان
چکیده
منابع مشابه
Investigation of Acoustic Properties of Polymer Nanocomposites regarding Combined Sound Absorption and Insulation Characteristics
Introduction: Nowadays multiple techniques have been developed to noise control. One the most important way is the control based on sound absorption and insulation. The purpose of current study was to improve the acoustic properties of soft polyurethane foam regarding combined sound absorption and insulation characteristics. Materials and Methods: Polyacrylonitrile and polyvinylidine fluoride ...
متن کاملDeformation Characteristics of Composite Structures
The composites provide design flexibility because many of them can be moulded into complex shapes. The carbon fibre-reinforced epoxy composites exhibit excellent fatigue tolerance and high specific strength and stiffness which have led to numerous advanced applications ranging from the military and civil aircraft structures to the consumer products. However, the modelling of the beams undergoin...
متن کاملMechanical characteristics of filter structures for MEMS adaptive infrared detectors
This paper reports the mechanical design and optimization of tunable Fabry-Perot (FP) filter structures for the development of MEMS adaptive infrared detectors using finite element modeling and experimental investigations. The results indicate that the mechanical characteristics of the FP filters are significantly influenced by the structural designs, which eventually affect the filter performa...
متن کاملEffect of non-acoustic properties on the sound absorption of polyurethane foams
In this paper the influence of non-acoustic properties on the sound absorption coefficient of polyurethane foams as a porous medium is investigated. Biot’s equations with transfer matrix method, as the solution approach are employed to evaluate the sound absorption coefficient of selected polyurethane foams. The major issue is the dependency of non-acoustic properties on each other which makes ...
متن کاملSound Absorption in the Workplace
The results are in. Recent studies conducted by an independent testing laboratory show that when it comes to acoustics, commercial cushion makes carpet even better. To specifiers and end-users, it will come as no surprise that properly specified carpet cushion reduces noise when used in a commercial installation. What will be of interest is the degree of improvement that has been quantified in ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Series of Geology and Technical Sciences
سال: 2021
ISSN: 2224-5278
DOI: 10.32014/2021.2518-170x.43