Results 21 to 30 of about 95,492 (253)
Acoustic performance of micro-grooved elements [PDF]
Applied Acoustics, 2017 The acoustic performance of a new type of fibre-less sound absorber, the micro-grooved element (MGE), is studied in this paper. A MGE is a double layer element that involves inlet/outlet slots and inner micro-channels engraved onto the mating surface of the layers.
openaire +3 more sources
Research on the Sound Insulation Properties of Membrane-type Acoustic Metamaterials [PDF]
E3S Web of Conferences, 2021 Low- and medium-frequency noise from ship cabins is difficult to control effectively. Excessive noise can seriously affect the acoustic stealth performance of ships.
Hao Jinyu +4 more
doaj +1 more source
Acoustic Wave Filters for Enhanced Performance
2018 IEEE International Ultrasonics Symposium (IUS), 2018 This paper presents a novel filter configuration based on acoustic wave resonators that allows to obtain filter responses unachievable with the well established ladder configuration, such as arbitrary position of transmission zeros, multiband filtering responses and wideband performances.
Mateu Mateu, Jordi +5 more
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Acoustic Performance of Concrete with Rubber and Vermiculite for Highway Barriers [PDF]
Materials ResearchThe inadequate disposal of waste tires has caused environmental and public health problems. One of the direct harmful effects is the noise due to traffic.
Lucas Silveira Batista +6 more
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Sensors, 2023 In order to investigate the factors affecting the acoustic performance of the extrinsic Fabry–Perot interferometer (EFPI) fiber-optic acoustic pressure sensor and to effectively improve its detection capability, this paper enhances the sensor’s detection
Ruling Zhou +9 more
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Acoustic Properties of 316L Stainless Steel Hollow Sphere Composites Fabricated by Pressure Casting
Metals, 2020 In this study, we prepared metal hollow sphere composites (MHSCs) using metal hollow spheres (MHSs) by pressure casting under vacuum conditions, and investigated the acoustic properties.
Chunhe Wang +4 more
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BuildingsThis paper attempts to ascertain the thermal and acoustic impacts of introducing a vegetative roof layer on insulated and uninsulated metal roofs for tropical climates, through field measurements in Skudai, Johor, Malaysia, that were conducted for both ...
Siew Bee Aw +8 more
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On the Use of Perforated Sound Absorption Systems for Variable Acoustics Room Design
Buildings, 2021 An important challenge for acoustic engineers in room acoustics design is related to the acoustic performance of multi-purpose auditoriums, which are typically designed to suit several performance requirements.
Andreia Pereira +7 more
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Photonics, 2021 Optical-resolution photoacoustic microscopy (OR-PAM) is a promising noninvasive biomedical imaging technology with label-free optical absorption contrasts. Performance of OR-PAM is usually closely related to the optical-acoustic combiner.
Xiang Zhang +7 more
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The Potential for Glass Wool Waste as a Filler in UF Adhesive to Promote Particleboard Strength
RecyclingWastes, biomasses, and nanoparticles have motivated reformulations of adhesives in the wood-based-panel industry. This study investigated the incorporation of glass wool (GW) waste as a filler material in urea–formaldehyde (UF) adhesive, evaluating its ...
Michelângelo Vargas Fassarella +7 more
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