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1141
Design of Honeycomb Microperforated Structure with Adjustable Sound Absorption Performance
Published 2021-01-01“…Thus, a better absorption performance is achieved by changing the position of the inner MPP. Acoustic impedance of the structure was calculated based on transfer matrix method. …”
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1142
Hybrid mechanical metamaterials: Advances of multi-functional mechanical metamaterials with simultaneous static and dynamic properties
Published 2025-02-01“…Mechanical metamaterials are architected structures with unique functionalities, such as negative Poisson's ratio and negative stiffness, which are widely employed for absorbing energy of quasi-static and impact loads, giving improved mechanical response. Acoustic/elastic metamaterials, their dynamic counterparts, rely on frequency-dependent properties of their microstructure elements, including mass density and bulk modulus, to control the propagation of waves. …”
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1143
Quantitative photoacoustic imaging using known chromophores as fluence marker
Published 2025-02-01“…Photoacoustic imaging offers optical contrast images of human tissue at acoustic resolution, making it valuable for diverse clinical applications. …”
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1144
Wearable Voice Dosimetry System
Published 2024-07-01“…The objective quantification of voice acoustic parameters is used for the diagnosis, monitoring, and treatment of voice disorders. …”
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1145
An ultrasonic-AI hybrid approach for predicting void defects in concrete-filled steel tubes via enhanced XGBoost with Bayesian optimization
Published 2025-07-01“…SHAP (SHapley Additive exPlanations) analysis revealed that sound velocity, sound time, acoustic amplitude, concrete strength, and fly ash content were the most influential features for model predictions. …”
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1146
Assessing the Hardness of Quenched Medium Steel Using an Ultrasonic Nondestructive Method
Published 2015-01-01“…Our experimental results show that a smaller average grain size as well as higher hardness can be obtained from higher quenching temperatures. Faster acoustic velocities and slower attenuation coefficients are caused by higher material hardness. …”
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1147
Failure Mechanism of a Coal-Rock Combined Body with Inclinations of Structural Planes and a Calculation Model for Impact Energy
Published 2019-01-01“…Based on the theory of particle mechanics, a calculation model for impact energy in a CR combined body with inclinations was established and then verified by using monitored acoustic emission (AE) data. The test results showed that inclination affected mechanical properties and failure characteristics of the CR combined body, i.e., the larger the inclination, the lower the strength and impact energy in the CR combined body and the lower the level of damage. …”
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1148
Study on Ultrasonic Response to Mechanical Structure of Coal under Loading and Unloading Condition
Published 2017-01-01“…When it progresses from the linear elastic stage to the elastic plastic stage, the material inside the coal distorts and fractures more drastically, the inner defects are fully developed, and the acoustic parameters decrease significantly. Therefore, the corresponding measures should be adapted to reduce the loading stress before the coal is loaded to its critical stress level.…”
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1149
Ultrasonic localization method based on receiver array optimization schemes
Published 2018-11-01“…The other problem is that the sound intensity of some local corner points are obviously stronger than those points near the acoustic source, which may confuse the ultrasonic receivers and bring significant differences in measurement errors. …”
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1150
Microultrasound Molecular Imaging of Vascular Endothelial Growth Factor Receptor 2 in a Mouse Model of Tumor Angiogenesis
Published 2007-09-01“…The B-mode (two-dimensional mode) acoustic signal from microbubbles bound to the molecular target was determined by an ultrasound-based destruction-subtraction scheme. …”
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1151
Review of Energy Harvesters Utilizing Bridge Vibrations
Published 2016-01-01“…In bridge environment, several forms of energy are available for operating WASNs that include wind, solar, acoustic, and vibration energy. However, only bridge vibration has the tendency to be utilized for embedded WASNs application in bridge structures. …”
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1152
Role of the ventral portion of intermediate arcopallium in stability of female Bengalese finch song preferences
Published 2025-01-01“…Songbirds provide an excellent model to investigate the neural mechanisms of decision making, because females rely on acoustic signals called songs as important stimuli in directing their mate choice. …”
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1153
Research on Improvement of Spectrum Efficiency of Spread Spectrum OFDM Communication Scheme for Cruising Sensor Network
Published 2014-11-01“…A reliable and high-speed underwater acoustic (UWA) communication scheme is necessary for node-to-node communication. …”
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1154
Analysis of Slotted Tooth Switched Reluctance Motors for Electric Vehicle Applications
Published 2024-01-01“…Switched reluctance motors’ (SRMs) implementation in electric vehicle drives are widely increasing due to several merits, such as a wide speed range, high torque density, and rare earth-free characteristics, but it also has some drawbacks, such as more torque ripples, acoustic noise, and vibration, that hinder its usage in electrical vehicle applications. …”
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1155
Complexity: a new paradigm for fracture mechanics
Published 2009-10-01“…Further examples will deal with criticality in the acoustic emissions of damaged structures and with scaling in the time-to-failure (Carpinteri et al. [9]). …”
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1156
Thrush nightingales adjust the peak frequency and structure of their songs in response to different types of experimental noise
Published 2025-01-01“…However, little attention has been given to experimentally examining how the structure of the acoustic signal changes in response to various kinds of disturbances in the soundscape. …”
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1157
Influences of roughness and filling degree on the shear strength and damage evolution characteristics of cement-filled joints.
Published 2025-01-01“…Pressure-shear tests of cement-filled joints were carried out. Combined with the acoustic emission (AE) technique, the effects of normal stress, roughness and filling degree on the shear strength, damage morphology and damage evolution of cement-filled joints were investigated. …”
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1158
The effects of implicit corrective feedback on production of lexical stress in L2 English
Published 2024-09-01“…The intervention group received a recast upon producing target words with misplaced primary stress, whereas the control group did not receive any corrective feedback. The results of acoustic analyses, which focused on syllable duration, intensity, and pitch, indicated a positive relationship between recasts and development of primary stress placement. …”
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1159
Understanding Multiferroic Hexagonal Manganites by Static and Ultrafast Optical Spectroscopy
Published 2013-01-01“…Moreover, the coherent optical and acoustic phonons were observed on optical pump-probe spectroscopy. …”
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1160
Modeling Reader's Emotional State Response on Document's Typographic Elements
Published 2011-01-01“…This novel model can contribute to the automated reader's emotional state extraction in order, for example, to enhance the acoustic rendition of the documents, utilizing text-to-speech synthesis.…”
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