A high-temperature acoustic field measurement and analysis system for determining cavitation intensity in ultrasonically solidified metallic alloys

Sonochemical regulation of oxygen vacancies for Bi2WO6 nanosheet-based photoanodes to promote photoelectrochemical performance

“…An acoustic field measurement and analysis system consists of a standard hydrophone (TC4035, RESON, Denmark), a sensor power supply unit, a voltage preamplifier filter (VP2000, RESON), and a high-speed AD acquisition card (PCIe-6374, NI) was used for acoustic cavitation intensity detection at the BWO surface. 22 The hydrophone was placed in the reaction solution at the position of the BWO surface directly below the ultrasonic probe with a distance of 1.0 cm to measure acoustical signals during ultrasonication. The transient cavitation intensity ( I t ) and stable cavitation intensity ( I s ) at the designated site in solution were computed from the continuous-spectrum sound intensity component characterized by a non-linear inhomogeneous Helmholtz equation and a fast Fourier transform considering the energy loss caused by the cavitation effect.…”

“…† The time-varying spectral line of I t was deduced from the typical continuous spectrum, while the I s is derived from the line spectra calculated from the original acoustic spectrum under each ultrasonic condition. 22 Fig. 1a and b show the time dependence of I t and I s at the interface between the BWO-ux photoanodes and the reaction solution during the sonochemical process, respectively.…”

Study on Cavitation Corrosion Properties of Titanium Alloy Radiation Rod with Different Roughnesses for Ultrasonic Casting

“…However, with the continuous upgrading of industrial applications, higher requirements are put forward for the performance of aluminum alloys, and aluminum alloys produced by traditional casting methods can no longer meet this requirement [5,6]. By incorporating ultrasound into the traditional aluminum alloy casting process, the special acoustic cavitation effect of ultrasound [7][8][9][10] can refine the grain of aluminum melt and remove impurities and gases in the melt, and so aluminum alloys with stronger properties are obtained.…”

Analysis of the Gear Pump’s Acoustic Properties Taking into Account the Classification of Induction Trees

“…The basis for all implementation is detailed measurement and determining the standards established by the State Labor Inspectorate to be met. The results of studies presented in, for example [1][2][3], showed that the use of computer simulation tools to simulate acoustic phenomena in industrial halls is currently the basic and indispensable solution for the effective design of antinoise protection at workstations. The use of simulation methods aims to determine the impact of individual sound sources on the total noise observed at a given workstation, thus identifying the sources responsible for the observed acoustic state.…”