Ultrasonic radiation from wedges of cubic profile [electronic resource] : Experimental results

• Ngôn ngữ: eng
• Ký hiệu phân loại: 621.3875 Electrical, magnetic, optical, communications, computer engineering; electronics, lighting
• Thông tin xuất bản: Washington, D.C. : Oak Ridge, Tenn. : United States. Dept. of Energy ; Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy, 2015
• Mô tả vật lý: Size: p. 141-146 : , digital, PDF file.
• Bộ sưu tập: Metadata
• ID: 255854
• Chủ đề: 1. 30 direct energy conversion; 2. 71 classical and quantum mechanics, general physics; 3. Acoustic?structure interaction; 4. Air-coupled ultrasound; 5. Piezoelectric transducers; 6. Time-reversal acoustics

Tóm tắt

This work presents experimental results demonstrating the increase in ultrasonic radiation obtained from a wedge of cubic profile relative to a plate of uniform thickness. The wedge of cubic profile provides high efficiency sound radiation matching layer from a mounted piezoelectric transducer into the surrounding air. Previous research on structures with indentations of power-law profile has focused on vibration mitigation using the so called ?acoustic black-hole? effect, whereas here such structures are used to enhance ultrasonic radiation. The work provides experimental verification of the numerical results of Remillieux et al. (2014).