Piezoelectric Transducer for Ultrasonic Flaw Detector with High Performance
نویسندگان
چکیده
منابع مشابه
A MEMS Transducer for Ultrasonic Flaw Detection
Metal structures can fail because of fatigue crack propagation or because of section loss from corrosion. Regular inspection is required to intercept such failures, and in situ sensors would be a superior technology for that purpose. We have designed and fabricated arrays of MEMS capacitive diaphragm transducers and we report on their performance as pulse-echo detectors in direct contact with s...
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In this paper, we demonstrated that 1-3 PZT/polymer composites, fabricated using PZT-4 ceramic and a polymer possessing a high glass transition temperature and low loss, can be used as high power ultrasonic transducer materials for high intensity focused ultrasound (HIFU) applications. The mechanical quality factor of the 1-3 composite with 64% ceramic volume fraction is over 200. The dielectri...
متن کاملOn the Calibration of Ultrasonic Flaw Detector
For the assessment performance of the ultrasonic flaw detector (UFD) equipment, various standard documents are referred to such as ASTM (E317), British Standard (BS-4331), Bureau of Indian Standard (IS-12666), and more. The methods of calibration are spelt in different tone in these documents while broadly serving the same purpose. In the present paper a comparison for the calibration procedure...
متن کاملA MEMS Phased Array Transducer for Ultrasonic Flaw Detection
Metal structures can fail because of fatigue crack propagation or because of section loss from corrosion. Regular inspection is required to detect such failures. We report here progress toward the development of MEMS-based transducers for ultrasonic flaw detection, to be permanently mounted at critical locations on structures. In a complete system, a single piezoelectric element will be used to...
متن کاملExperiments in Ultrasonic Flaw Detection using a MEMS Transducer
In earlier work we developed a MEMS phased array transducer, fabricated in the MUMPs process, and we reported on initial experimental studies in which the device was affixed into contact with solids. We demonstrated the successful detection of signals from a conventional ultrasonic source, and the successful localization of the source in an off-axis geometry using phased array signal processing...
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ژورنال
عنوان ژورنال: The Journal of the Korean Institute of Information and Communication Engineering
سال: 2013
ISSN: 2234-4772
DOI: 10.6109/jkiice.2013.17.7.1645