Dies ist unsere neueste Auswahl an weltweiten Veröffentlichungen und Patenten in englischer Sprache zum Thema Akustik, die in zahlreichen wissenschaftlichen Online-Zeitschriften zu den Themen Akustik, Schallwellen, Schallabsorption, Schalldruck, akustische Impedanz, Frequenzgang, Nachhall, Wellenform und Doppler veröffentlicht wurden.
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Method and system for monitoring rock failure process
Patent published on the 2025-06-25 in ZA under Ref ZA202409026 by HUZHOU VOCATIONAL AND TECHNICAL COLLEGE [CN] (Niu Jiangrui [cn], Su Yingqiang [cn], Sun Lu [cn], Xie Enpu [cn])
Abstract: The invention discloses a method and a system for monitoring the rock failure process, which includes the following steps: acquiring comprehensive characteristic information of a rock sample; the acoustic emission signals of rock samples during the loading process are obtained in real time, and the spatial distribution characteristics of micro-cracks are determined by combining the comprehensive characteristic information; acquiring and preprocessing three-dimensional structural image data to ob[...]
Our summary: Method and system for monitoring rock failure process. Acquiring comprehensive characteristic information of a rock sample, determining spatial distribution characteristics of micro-cracks, and establishing a rock failure prediction model using machine learning algorithm.
rock failure process, monitoring system, acoustic emission signals, machine learning algorithm
Patent
Quantum microwave-to-optical transducer and associated methods
Patent published on the 2025-06-19 in WO under Ref WO2025128892 by GOVERNMENT OF THE US SECRETARY OF COMMERCE [US] (Silverman Kevin Lawrence [us], Decrescent Ryan Anthony [us], Mirin Richard Paul [us], Autry Travis [us], Wang Zixuan [us], Imany Poolad [us])
Abstract: A quantum transducer includes a back gate having a doped semiconductor layer, a tunnel barrier located above the doped semiconductor layer, a quantum dot contacting a top surface of the tunnel barrier, a cap layer located above the tunnel barrier and covering the quantum dot, a surface acoustic wave (SAW) resonator located above the cap layer, a SAW transducer coupled to the SAW resonator, and a top gate located above the SAW resonator. The SAW resonator is mechanically coupled to the quantum do[...]
Our summary: Quantum transducer with back gate, doped semiconductor layer, tunnel barrier, quantum dot, cap layer, SAW resonator, SAW transducer, top gate. Depth and conductivity of doped layer selected to minimize SAW attenuation and achieve high piezoelectric coupling constant.
quantum transducer, microwave-to-optical, surface acoustic wave resonator, piezoelectric coupling constant
Patent
