Results 11 to 20 of about 5,467,977 (315)
Elastic orbital angular momentum transfer from an elastic pipe to a fluid
Communications Physics, 2022 Orbital angular momentum (OAM) has been extensively studied for light and acoustic waves but only recently it was show than elastic waves present similar properties.
Gregory James Chaplain +2 more
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A Thickness-Mode High-Frequency Underwater Acoustic Transducer with a Low Sidelobe Level
Actuators, 2021 Thickness vibration mode is commonly used for high-frequency transducers. For disc piezoelectric ceramics, there is no ideally pure thickness vibration mode because the coupling between the radial and thickness modes always exists.
Hui Zhao +5 more
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Sustainable Acoustic Materials [PDF]
Sustainability, 2020 Technological advances in materials science, manufacturing processes, chemistry and nanoscience have led to enormous developments in innovatively engineered materials over recent decades. Among them, sustainable acoustic materials have helped to improve acoustical comfort in built environments, and their use is rapidly growing in the architecture ...
Jorge P. Arenas, Kimihiro Sakagami
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Various topological phases and their abnormal effects of topological acoustic metamaterials
Interdisciplinary Materials, 2023 The last 20 years have witnessed growing impacts of the topological concept on the branches of physics, including materials, electronics, photonics, and acoustics.
Yan‐Feng Chen +8 more
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Biomimetics, 2022 Mycelium-based composites have the potential to replace petrochemical-based materials within architectural systems and can propose biodegradable alternatives to synthetic sound absorbing materials. Sound absorbing materials help improve acoustic comfort,
Natalie Walter, Benay Gürsoy
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On articulated plates with micro-slits to tackle low-frequency noise
Acta Acustica, 2021 In recent years, new concepts of acoustic absorbers dedicated to the reduction of low-frequency noise have been developed. Among them, liners with moving parts, such as membrane-based liners, have been an object of particular interest.
D’Elia Massimo Emiliano +2 more
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Buildings, 2021 Exploring new construction materials with low environmental impact leads to innovation in buildings and also to the expansion of environmental sustainability in the construction industry.
Felippe Fabrício dos Santos Siqueira +5 more
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Trudy Odesskogo Politehničeskogo Universiteta, 2019 The development of industry has revealed the need for a wide variety of production facilities with special requirements for their acoustic characteristics.
Інна Сергіївна Сінько +3 more
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Acoustic microscopy of solid materials
Metallography, 1985 Abstract Conventional ultrasonic imaging uses frequencies up to 10 MHz or perhaps a little higher. Scanning acoustic microscopy extends the frequencies used to the GHz region, with a corresponding improvement in resolution. The technique is now beginning to be applied to problems in the study of materials.
Weaver, J +3 more
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Are Acoustical Materials a Menace in the Hospital? [PDF]
The Journal of the Acoustical Society of America, 1930 Hospitals must be made quiet. To determine what would best meet their exacting requirements as to cleanliness, maintenance, permanance and cost, a series of tests were undertaken on the various acoustical treatments available. To determine further whether these materials would act as abiding and breeding places for bacteria and so present a menace in ...
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