Results 31 to 40 of about 84,837 (199)

Sound insulation performance of plates with interconnected distributed piezoelectric patches

open access: yesChinese Journal of Aeronautics, 2017
The intensive use of light plate-like structures in aircraft industry and transport industry result in more serious vibration and noise issues for their higher dynamical sensitivities. To deal with these problems, techniques based on piezoelectric materials have been proposed and numerous papers have contributed to their development and application[1-7]
Yi, Kaijun   +3 more
openaire   +2 more sources

Acoustic evaluation of beam and pot slabs with lightweight regularization layers: a case study [PDF]

open access: yes, 2004
The objective of this work is to evaluate the acoustic performance of beam and pot slabs with regularization layers made of lightweight concrete. The study consists on the analysis of the acoustic behaviour of three types of solutions, through the ...
Almeida, Manuela Guedes de   +3 more
core  

Enhanced acoustic insulation of compact three-dimensional hexa-protruded perforated plates with staggered layers at a fixed volume [PDF]

open access: yesAIP Advances
The increasing demand for integrated solutions that balance sound insulation with ventilation in modern green building designs has driven the development of innovative approaches.
Xiuhai Zhang   +4 more
doaj   +1 more source

Noise reduction performance of thermobonded nonwovens [PDF]

open access: yes, 2012
Acoustic insulation is an important requirement for the human life today, since noise affects the efficiency of day-to-day activities and even cause various health problems Materials based on fibrous structures show very good acoustic insulation ...
Carvalho, R.   +3 more
core  

Evaluation of the Floor Impact Sound Insulation Performance of a Voided Slab System Applied to a High-Rise Commercial Residential-Complex Building

open access: yesInternational Journal of Concrete Structures and Materials, 2019
Multi-unit dwellings, such as apartment housing, town houses, and flats, are some of the most common housing types in Korea, as well as in other countries.
Seunguk Na   +4 more
doaj   +1 more source

EXPERIMENTAL ANALYSIS OF INNOVATIVE ACOUSTIC MA-TERIALS FOR ENGINE NOISE CONTROL IN VEHICLES [PDF]

open access: yes, 2019
Due to the continuous evolution of vehicle noise regulations, the automotive industry is increasingly looking for more efficient engine bay design solutions to control noise coming from the engine.
Alfonso, Molaro   +5 more
core  

Optimization Design and Experimental Testing of Sound Insulation Performance for Silent Cabins

open access: yesApplied Sciences
This study investigates the sound insulation performance of an anechoic chamber, exploring the influence patterns of different multilayer material combinations on wall sound insulation characteristics.
Li Tang   +4 more
doaj   +1 more source

Some considerations about the contribution of roller shutters positions to noise insulation of façades [PDF]

open access: yes, 2004
This paper describes an experimental study on the evaluation of the influence of roller shutters positions on noise insulation of façades. The study is based on the results of a set of tests carried out in laboratory, and in situ using the 1st, 2nd, 3rd ...
Bragança, L., Patrício, Jorge
core  

Development of vertical incident sound insulation simulation technology using finite element method and application to lightweight core

open access: yesNihon Kikai Gakkai ronbunshu, 2020
If the octet truss core, which is a space filling structure of half regular octahedrons and regular tetrahedrons, has excellent sound insulation characteristics, the possibility of using the octet truss core is sufficiently widened.
Aya ABE, Haruki YASHIRO, Ichiro HAGIWARA
doaj   +1 more source

Perforated Steel Stud to Improve the Acoustic Insulation of Drywall Partitions

open access: yesAcoustics, 2021
Steel studs are an inevitable part of drywall construction as they are lightweight and offer the required structural stability. However, the studs act as sound bridges between the plasterboards, reducing the overall sound insulation of the wall ...
Arun Arjunan   +2 more
doaj   +1 more source

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