Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 10 of 10 for “"Ultrasonic Sensing"”.
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Development of a real-time ultrasonic sensing system for automated and robotic welding
… system which utilizes a manipulator arm, ultrasonic sensors and a transistorised welding power source is outlined. This system incorporates three essential aspects. It locates and tracks the welding seam ensuring correct positioning of the welding head relatively to the joint preparation. …
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An ultrasonic sensing and indentation apparatus for assessment of tissue geometry and mechanical properties
Measuring the distance from the skin to the bone and soft tissue mechanical properties is important to custom designing prosthetic sockets for amputee patients using a computer aided method. The current state-of-the-art method to obtain such information is via MRI scans. However, MRI scans are …
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A direct on-line ultrasonic sensing method to determine tool and process conditions during turning operations
… hostile machining environment. A direct, active, ultrasonic method for on-line sensing of the tool condition and process state in turning operations was developed. Sensing is achieved by using an ultrasonic transducer operating at 10 MHz in a pulse-echo mode to send pulses through the tool. The …
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The feasibility of micromachined dynamic resonant beam coriolis true mass flow meter
… pressure sensors and accelerometers. MEMS flow sensing has emerged as a field of interest in microfluidics, with a variety of sensing methods being miniaturized, such as thermal anemometry, ultrasonic sensing and flow measurement based on the Coriolis effect. Coriolis sensing is particularly …
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Multimodal speech recognition with ultrasonic sensors
Ultrasonic sensing of articulator movement is an area of multimodal speech recognition that has not been researched extensively. The widely-researched audio-visual speech recognition (AVSR), which relies upon video data, is awkwardly high-maintenance in its setup and data collection process, as …
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Quality Monitoring of 3D Printed Scaffold
… the printed product. Acoustic methods, such as ultrasonic sensing, can detect defects by analyzing sound waves generated during the printing process. However, each technique has limitations, and the method to be chosen depends on the application it is required for. This experimental study …
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Robotic Eavesdropping: Effects of Bioinspired Acoustic Sensing on Tracking and Estimation
… the question of how fusing active and passive ultrasonic sensing may effect the information available to a robotic vehicle. Our first investigation was an experimental verification of the capabilities of a stereo sensor for passively tracking an ultrasonic sound source using limited a priori …
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Development of techniques for detection and dissolution enhancement of mineral deposits in petroleum pipelines using ultrasound.
… to address some of the above problems using ultrasonic techniques. Work presented in this thesis branches out into two main areas of interest, namely: (a) developments concerning location of deposits from both top-side and down-hole locations; and (b) developments relating to enhancement of …