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Acoustic metamaterial. An acoustic metamaterial, sonic crystal, or phononic crystal is a material designed to control, direct, and manipulate sound waves or phonons in gases, liquids, and solids (crystal lattices). Sound wave control is accomplished through manipulating parameters such as the bulk modulus β, density ρ, and chirality.
Pierre A. Deymier is a researcher in phononics, [1] acoustic metamaterial, [1] and materials science. He is a Professor of Materials Science and Engineering and previously department head at the University of Arizona. [2] He holds appointments with the applied mathematics graduate interdisciplinary program, [3] BIO5 institute, and School of ...
Acoustics is defined by ANSI/ASA S1.1-2013 as " (a) Science of sound, including its production, transmission, and effects, including biological and psychological effects. (b) Those qualities of a room that, together, determine its character with respect to auditory effects." The study of acoustics revolves around the generation, propagation and ...
Institute of Acoustics, Chinese Academy of Sciences. The Institute of Acoustics (IOA, Chinese: 中国科学院声学研究所) of the Chinese Academy of Sciences (CAS) was established in 1964 [1] by the Chinese government in the context of China's national defense needs for acoustic research, under the auspices of Marshall Nie Rongzhen. [2]
The dislocation mechanism of the AE act (event) during the nucleation of a microcrack in metals with body-centered cubic (bcc) lattice. Acoustic emission (AE) is the phenomenon of radiation of acoustic (elastic) waves in solids that occurs when a material undergoes irreversible changes in its internal structure, for example as a result of crack formation or plastic deformation due to aging ...
Acoustical engineering (also known as acoustic engineering) is the branch of engineering dealing with sound and vibration. It includes the application of acoustics, the science of sound and vibration, in technology. Acoustical engineers are typically concerned with the design, analysis and control of sound. One goal of acoustical engineering ...
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