Topic
Ultrasonic sensor
About: Ultrasonic sensor is a research topic. Over the lifetime, 80941 publications have been published within this topic receiving 761089 citations.
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Patent•
26 Oct 1994
TL;DR: In this paper, an ultrasonic handpiece with bipolar electrodes associated with the tool or the flue is presented for bipolar electrosurgery with or without ultrasonic vibration of the tool.
Abstract: An ultrasonic oscillator drives a tool at a set frequency. An amplitude control (47) runs the oscillator to set the vibration level. A frequency regulator (48) joins the amplitude and the oscillator. A handpiece supports a tranducer and a vibrating tool. A flue (17) surrounds the tool. Electrodes (42) associated with the flue (17) and/or the tool extend to be at or near the distal tip (18) of the tool and/or the flue (17) and provide bipolar electrosurgery with or without ultrasonic vibration of the tool. A method of performing ultrasonic surgery and bipolar electrosurgery has an ultrasonic handpiece with bipolar electrodes (42) associated with the tool or the flue (17).
720 citations
TL;DR: In this paper, a method of manufacturing high-power sandwich type ultrasonic transducers without the need for a trimming process is described, and a new method of tuning high power sandwich type transducers is presented, where a dimension or material property of a selected tuning element alters the measured resonant frequency of the transducers.
Abstract: This invention is a method of manufacturing high-power sandwich type ultrasonic transducers (82), and more particularly, a new method of tuning high-power sandwich type ultrasonic transducers (86) without the need for a trimming process. A method in accordance with the present invention includes the steps of assembling a sandwich type ultrasonic transducer (82), measuring the resonant frequency of the ultrasonic transducer (82), and selecting from a plurality of tuning elements (50), whereby a dimension or material property of a selected tuning element alters the measured resonant frequency of the ultrasonic transducer (82) to a desired resonant frequency after the tuning element (50) is attached to the ultrasonic transducer (82).
693 citations
TL;DR: In this article, an ultrasonic guided wave structural health monitoring (SHM) system was developed for aircraft wing inspection, where small, low-cost and light-weight piezoelectric (PZT) discs were bonded to various parts of the aircraft wing, in a form of relatively sparse arrays, for simulated cracks and corrosion monitoring.
Abstract: This work focuses on an ultrasonic guided wave structural health monitoring (SHM) system development for aircraft wing inspection. In part I of the study, a detailed description of a real aluminum wing specimen and some preliminary wave propagation tests on the wing panel are presented. Unfortunately, strong attenuation and scattering impede guided waves for large-area inspection. Nevertheless, small, low-cost and light-weight piezoelectric (PZT) discs were bonded to various parts of the aircraft wing, in a form of relatively sparse arrays, for simulated cracks and corrosion monitoring. The PZT discs take turns generating and receiving ultrasonic guided waves. Pair-wise through-transmission waveforms collected at normal conditions served as baselines, and subsequent signals collected at defected conditions such as rivet cracks or corrosion detected the presence of a defect and its location with a novel correlation analysis based technique called RAPID (reconstruction algorithm for probabilistic inspection of defects). The effectiveness of the algorithm was tested with several case studies in a laboratory environment. It showed good performance for defect detection, size estimation and localization in complex aircraft wing structures.
670 citations
Patent•
14 Jun 2013TL;DR: In this paper, a surgical instrument consisting of an end effector, an articulating shaft, and an ultrasonic transducer assembly is presented, where the transducers are positioned proximally from the end-effector along a longitudinal axis and pivotably coupled at an articulation joint.
Abstract: Various embodiments are direct to a surgical instrument comprising and end effector, an articulating shaft and an ultrasonic transducer assembly. The end effector may comprise an ultrasonic blade. The articulating shaft may extend proximally from the end effector along a longitudinal axis and may comprise a proximal shaft member and a distal shaft member pivotably coupled at an articulation joint. The ultrasonic transducer assembly may comprise an ultrasonic transducer acoustically coupled to the ultrasonic blade. The ultrasonic transducer assembly may be positioned distally from the articulation joint.
649 citations
Patent•
31 Aug 1999TL;DR: An ultrasonic diagnostic apparatus for diagnosing a characteristic of a body by passing ultrasound through the body to be examined which is placed between a pair of ultrasound transducers is described in this paper.
Abstract: PCT No. PCT/JP97/02710 Sec. 371 Date Apr. 3, 1998 Sec. 102(e) Date Apr. 3, 1998 PCT Filed Apr. 8, 1997 PCT Pub. No. WO98/05258 PCT Pub. Date Dec. 2, 1998An ultrasonic diagnostic apparatus for diagnosing a characteristic of a body to be examined by passing ultrasound through the body to be examined which is placed between a pair of ultrasound transducers. The apparatus comprises a pair of ultrasound transducers which are fixedly disposed facing to one another, with one of the ultrasound transducers (5) having a first standoff on the transmitting/receiving surface thereof, with the other ultrasound transducer (4) being housed in a movable tank having a second standoff at its front end, and moves the movable tank so that the body between the front end surface of the first standoff and the front end surface of the second standoff are brought into contact thereto and diagnoses a characteristic of the body based on signals emitted and received by the ultrasound transducers.
637 citations