Results 31 to 40 of about 82,218 (265)
Advanced Engineering Materials, EarlyView.Residual adhesive after electrode loading in adhesive‐assisted resistance spot welding is quantified through a traceable experimental‐to‐digital workflow. Chromatic confocal topography provides calibrated surface‐height data, while OpenCV detects the electrode imprint and integrates adhesive height into comparable volume metrics.
Sung‐Min Wi, Jiangdong Zhao
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Research on the mechanism of acoustic radiation characteristics of granular assemblies
AIP AdvancesTo study the acoustic radiation characteristics of forced vibration of granular assemblies, the acoustic radiation model of a single particle and the acoustic radiation model of granular assemblies are established. Combined with experimental verification,
Shengwu Zhang +4 more
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Advanced Engineering Materials, EarlyView.Enhancing ultrasound transmission through an aberration layer exhibiting mismatched impedance with the surrounding medium possesses great implications in imaging and treatment. In this study, we show that a space‐coiling acoustic metamaterial with judiciously tailored structural profile can help improve impedance matching.
Maral Ghanami +4 more
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Experimental Evaluation of Acoustical Materials for Noise Reduction in an Induction Motor Drive
MachinesElectric propulsion motors are more efficient than internal combustion engines, but they generate high-frequency tonal noise, which can be perceived as annoying.
Ashish Kumar Sahu +4 more
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Punch press noise control through partial acoustic enclosure: A Field Study [PDF]
Salāmat-i kār-i Īrān, 2022 Introduction: Punch press is contributed as one of the major industrial machines to produce metal objects, which typically propagates hazardous noise. Acoustic enclosure is the most common method to mitigate noise transmitted from industrial equipment ...
ali Safari variani +4 more
doaj
Acoustic Performance Prediction of Undersea Vehicles
水下无人系统学报, 2023 With the development of deep-sea fishing and marine ranching, the impact of undersea radiation noise of vehicles on marine organisms such as fish cannot be ignored .
Xiaohan FU, Xuezhi FU, Minqing WANG
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Demonstrating Vibrational Current Generation With a Self‐Assembled Bioelectret
Advanced Functional Materials, EarlyView.Vacuum‐deposited films of the plant‐derived molecule, Baicalein, form a self‐assembled bioelectret exhibiting spontaneous orientation polarization and a giant surface potential. The films induce alternating current during the vibration of a movable electrode without charging treatments. Hydrocarbon protection enhances the air stability of the Baicalein
Kouki Akaike +7 more
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Side Effect of the Use of Acoustic Barriers Observed in the Infra Range
Archives of Acoustics, 2020 Acoustic barriers which are positioned along traffic lanes are designed to protect the surroundings from excessive noise. Such structures are to reverberate, diffract and damp the propagating acoustic waves.
Andrzej Czesław STANIEK +1 more
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Experimental study of the noise generated by urban high-voltage electrical substations
Measurement: Sensors, 2022 This work describes the results of sound pressure measurements carried out in the vicinity of ten high voltage electrical substations operating in areas of considerable urban density in the State of Rio de Janeiro. The work was motivated as a strategy to
Juan José Gómez Acosta +3 more
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Optical Signature of Moiré Superlattices Formed by Twisted SrTiO3 Membranes
Advanced Functional Materials, EarlyView.We discover optical signatures from bonded interfaces in twisted SrTiO3 moiré superlattices, including low‐frequency Raman vibrational modes and strong second‐harmonic generation, consistent with strong interlayer coupling inferred from cross‐sectional electron microscopy and ab initio calculations. ABSTRACT Moiré superlattices formed at the interfaces
T. A. M. Ragib Shahriar +13 more
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