Search The Directory The Web for Home > Science > Technology > Acoustics, Ultrasound and Vibration > Ultrasound > Resources > Research_Projects New! Submit a site   whatUseek Directory Site Listings:   Micromachined Air-Coupled Capacitance Transducer - Dr. David Schindel, Physicist, P.Eng., Ottawa, Canada   Miniatur-Viskosimeter - (in German) - Uni Leipzig   NDT Methods for Flaw Detection during Welding - BRITE-EURAM II Project 5907   Ocean Mapping Group - Ocean mapping Geo-Information Systems (GIS) are a promising tool for the management of high volume bathymetry data, the more extensive data management requirements of bathymetric charting agencies, and the information searches of ocean scientists, environmental emergency response teams and others.   On-line monitoring of polymer processing using ultrasonics - IMI (Canada)   Piezopolymer based transducer arrays - Thieme, Lutz; Daßler, Holger; TU Chemnitz   Scanning Acoustic Microscopy - (Manika Prasad's page)   Self-Compensating Ultrasonic System for Flaw Characterization in Steel Bridge Structures   Slava L. Zagorouiko - Research information related to air ultrasound: piezo transformers, actuators, transducers, and sirens.   Some Results on Ultrasonic Pressing - Wolfgang Kromp, A. Domnanovich, W. Lins, I. Novak, H. Peterlik, H. Pinczolits, University of Vienna, Institute of Solid State Physics / Austria. B. Prinz, Carnegie Mellon University, Mechanical Engr. Dept. / Pittsburgh, Pa; B. Pfouts, Kennametal Inc. / Latrobe, Pa A. Sabbani, General Motors Technical Center / Warren, Mi.   Stroboscopic visualisation of ultrasonic fields on solids by sampling - ndt.net   Subsurface Imaging - Bioacoustics Research lab   Ultrasonic Characterization of Materials   Ultrasonic Imaging - Ultrasonic Imaging with air sonar   Ultrasonic Inspection Simulation at SwRI - The multi-Gaussian beam model is an analytical solution of Gaussian wave propagation and it uses paraxial approximation. Such an analytical solution has made this beam model very computationally efficient. The MGB model can compute the propagation of ultrasound from planar or bi-cylindrically focused elliptical-element transducers. This model can also propagate ultrasound through curved interfaces in non-symmetry planes.   Ultrasonic Lamb-wave devices based on PZT thin films - A very thin suspended composite membrane along which acoustic waves are generated and detected, surrounded by a solid thick silicon frame, is the key component of a so called Lamb-wave sensor and/or actuator. The interdigital transducers patterned on the piezoelectric PZT layer allows the transformation of a voltage signal into a mechanical deformation and vice versa. Any external perturbations that induce a selective variation of the synchronous frequency can be investigated, e.g. temperature, pressure, added mass, electric field, shock, stress.   Ultrasonic Location System - AT&T Laboratories Cambridge   Ultrasonic Positioning - VTT Technical Research Centre of Finland, Machine Automation developed a method and device for determining position, based on the measurement of ultrasonic pseudorandom noise and its cross-correlation. With this method it is possible to implement an accurate positioning system in a limited area at low cost. The positioning method is best suited for indoor applications, e.g. industrial halls.   Ultrasonic Resonance Spectroscopy - Signals and Systems Group, Uppsala University Researchers: L. Ericsson, M. Gustafsson and T. Stepinski   Ultrasonic position measurement - The primary purpose of this thesis is to use several ultrasonic receivers and transmitters to implement a position measurement system. By combining range measurements from several receivers and knowing the position of the receivers relative to each other it is possible to use triangulation theory to implement the proposed position measurement system.     [ 1 2 3 ] Help build the largest human-edited directory on the web.   Submit a Site - Open Directory Project - Become an Editor

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