Assessing the sound of a woodwind instrument that cannot be played
Sign Up to like & getrecommendations! Published in 2019 at "Applied Acoustics"
DOI: 10.1016/j.apacoust.2018.08.028
Abstract: Abstract Historical woodwind instruments in museums or private collections often cannot be played, by virtue of their poor condition or the risk of damage. Acoustic impedance measurements may usually be performed on instruments in good… read more here.
Keywords: sound woodwind; impedance; condition; woodwind instrument ... See more keywords
Design and experimental evaluation of a travelling wave thermoacoustic engine
Sign Up to like & getrecommendations! Published in 2020 at "Energy Reports"
DOI: 10.1016/j.egyr.2020.11.002
Abstract: Abstract In a thermoacoustic engine, acoustic impedance plays a key role to improve the system performance. A matching stub is a component which can be applied to adjust the acoustic impedance. In this study, the… read more here.
Keywords: experimental evaluation; engine; travelling wave; design experimental ... See more keywords
Acoustic impedance of perforated plates in the presence of fully developed grazing flow
Sign Up to like & getrecommendations! Published in 2020 at "Journal of Sound and Vibration"
DOI: 10.1016/j.jsv.2020.115547
Abstract: Abstract The perforated components are widely used in the intake and exhaust mufflers. The coupling between instable shear layer and acoustic fluctuation has a significant influence on the acoustic impedance of perforated components. To obtain… read more here.
Keywords: impedance perforated; perforated plates; grazing flow; impedance ... See more keywords
Analysis and validation of two mathematical models of acoustic impedance in well logs: An example in Namorado oilfield, Campos basin, Brazil
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Petroleum Science and Engineering"
DOI: 10.1016/j.petrol.2017.08.080
Abstract: Abstract This paper is concerned with the reliability of two different models to compute acoustic impedances in the Namorado oilfield, Campos Basin, Brazil. The acoustic impedance is a physical property related to the interaction of… read more here.
Keywords: campos basin; oilfield campos; namorado oilfield; impedance ... See more keywords
A novel method for plastic particle sizing in suspension based on acoustic impedance spectrum
Sign Up to like & getrecommendations! Published in 2017 at "Ultrasonics"
DOI: 10.1016/j.ultras.2017.01.024
Abstract: &NA; The objective of this paper is to explore the relationship between the characteristics of plastic particles in suspension and acoustic impedance spectrum and to present a novel non‐invasive methodology for both spherical and non‐spherical… read more here.
Keywords: particle sizing; particle; impedance; acoustic impedance ... See more keywords
Determining sodium diffusion through acoustic impedance measurements using 80 MHz Scanning Acoustic Microscopy: Agarose phantom verification
Sign Up to like & getrecommendations! Published in 2019 at "Ultrasonics"
DOI: 10.1016/j.ultras.2018.12.013
Abstract: HighlightsVerification of sodium diffusion by time‐dependent acoustic impedance measurements.A linear relationship between the sodium concentration and its acoustic impedance.80 MHz SAM applicability for static and dynamic investigations of sodium ion. ABSTRACT The purpose of this… read more here.
Keywords: acoustic impedance; agarose phantom; sodium diffusion; microscopy ... See more keywords
Acoustic impedance measurement of tissue mimicking materials by using scanning acoustic microscopy.
Sign Up to like & getrecommendations! Published in 2020 at "Ultrasonics"
DOI: 10.1016/j.ultras.2020.106274
Abstract: Tissue-mimicking materials (TMMs) play a key role in the quality assurance of ultrasound diagnostic equipment and should have acoustic properties similar to human tissues. We propose a method to quantify the acoustic properties of TMM… read more here.
Keywords: acoustic impedance; tissue mimicking; mimicking materials; microscopy ... See more keywords
Self-Enhanced Acoustic Impedance Difference Strategy for Detecting the Acidic Tumor Microenvironment.
Sign Up to like & getrecommendations! Published in 2022 at "ACS nano"
DOI: 10.1021/acsnano.1c10173
Abstract: B-mode ultrasound imaging is a significant anatomic technique in clinic, which can display the anatomic variation in tissues. However, it is difficult to evaluate the functional state of organs and display the physiological information in… read more here.
Keywords: impedance difference; acoustic impedance; strategy; self ... See more keywords
HPSA：a high-performance smart aggregate for concrete structural health monitoring based on acoustic impedance matching method
Sign Up to like & getrecommendations! Published in 2023 at "Smart Materials and Structures"
DOI: 10.1088/1361-665x/acd60c
Abstract: Piezoceramic-based ultrasonic transducers have demonstrated the feasibility and effectiveness of functioning as smart aggregates (SAs) to detect damages for concrete structures in laboratory-sized structural members. The restriction of its further engineering application is the limited… read more here.
Keywords: based acoustic; impedance matching; acoustic impedance; high performance ... See more keywords
Seismic Acoustic Impedance Inversion via Optimization-Inspired Semisupervised Deep Learning
Sign Up to like & getrecommendations! Published in 2022 at "IEEE Transactions on Geoscience and Remote Sensing"
DOI: 10.1109/tgrs.2021.3107257
Abstract: Seismic acoustic impedance inversion (SAII) aims at recovering the subsurface impedance to achieve lithology interpretation. However, its ill-posedness and nonlinearity pose a great challenge to find an optimal solution. Regularization is an effective method to… read more here.
Keywords: deep learning; optimization; impedance; seismic acoustic ... See more keywords
Broadband Acoustic Impedance Building via the Fusion of Sparsely Promoted Reflectivity and Background Acoustic Impedance
Sign Up to like & getrecommendations! Published in 2023 at "IEEE Transactions on Geoscience and Remote Sensing"
DOI: 10.1109/tgrs.2023.3245083
Abstract: Geophysical exploration is developing from qualitative seismic imaging to quantitative imaging, and broadband acoustic impedance is the core. Directly estimating broadband impedance using full-waveform inversion is a strong nonlinear problem. It is difficult to obtain… read more here.
Keywords: background; acoustic impedance; broadband acoustic; reflectivity ... See more keywords