An efficient technique for the indirect BEM for multi-frequency acoustic analysis using Green’s function approximation
Sign Up to like & getrecommendations! Published in 2018 at "Journal of Mechanical Science and Technology"
DOI: 10.1007/s12206-018-0404-5
Abstract: We present an efficient technique for multi-frequency acoustic analysis by the variational indirect boundary element method. The system coefficient matrix of the boundary element method is frequency dependent and requires cumbersome computation in multifrequency acoustic… read more here.
Keywords: technique; frequency; acoustic analysis; multi frequency ... See more keywords
Quantitative analysis of low frequency acoustic characteristics for reverse horn by bottleneck effect analogy method
Sign Up to like & getrecommendations! Published in 2019 at "Modern Physics Letters B"
DOI: 10.1142/s021798491950177x
Abstract: Reverse horn as one of the Acoustic Black Hole (ABH) structures can be used to effectively reduce low frequency acoustic waves by focusing the sound energy. The sound waves in relatively low frequency range are… read more here.
Keywords: frequency acoustic; characteristics reverse; low frequency; reverse horn ... See more keywords
Low-frequency acoustic Fabry–Pérot fiber sensor based on a micromachined silicon nitride membrane
Sign Up to like & getrecommendations! Published in 2020 at "Chinese Optics Letters"
DOI: 10.3788/col202018.101201
Abstract: In this Letter, a low-frequency acoustic sensor based on an extrinsic Fabry–Perot (FP) interferometer with a silicon nitride (Si3N4) membrane is demonstrated. Using micromachining techniques, the 800 nm thick Si3N4 membrane is deposited on an… read more here.
Keywords: frequency; sensor based; frequency acoustic; low frequency ... See more keywords