Characterization of ultrasonic immersion transducers
نویسندگان
چکیده
منابع مشابه
Silicon micromachined ultrasonic immersion transducers
Broadband transmission of ultrasound in water using capacitive, micromachined transducers is reported. Transmission experiments using the same pair of devices at 4, 6, and 8 MHz with a signal-to-noise ratio greater than 48 dB are presented. Transmission is observed from 1 to 20 MHz. Better receiving electronics are necessary to demonstrate operation beyond this range. Furthermore, the same pair...
متن کاملUltrasonic Material Characterization System Employing an Array of Receiving Transducers
In a typical ultrasonic material characterization system, the output voltage of the transducer is recorded as a function of the relative position of the transducer and the specimen. The velocity and attenuation of the leaky surface acoustic waves and the reflectance function for the immersion liquid–specimen interface can be obtained from the recorded data. The experimental arrangements with lo...
متن کاملCoupling of MEMS ultrasonic transducers
MEMS ultrasonic transducers are potentially valuable in both medical and non-destructive testing applications. A prime advantage of these transducers is their wide bandwidth together with the potential for economical fabrication of detector arrays. In this paper, we discuss issues related to the coupling of these transducers to solid and liquid media. We will show that appropriate choice of the...
متن کاملControlled excitation of ultrasonic transducers
The reproducibility of ultrasonic measurements complicates the interpretation of measurement results. The signal from ultrasonic transducers varies for to several reasons, like manufacturing tolerances in a batch, cable length, amplifier properties etc. A known problem that is caused by this effect is the quantitative interpretation of C-scan images from laminates, particularly the porosity pre...
متن کاملInterface Electronics for Ultrasonic Transducers
Interface Electronics for Ultrasonic Transducers by Hao-Yen Tang Doctor of Philosophy in Engineering Electrical Engineering and Computer Sciences University of California, Berkeley Professor Bernhard E. Boser, Chair Ultrasound has long been used for medical imaging. Recent advances of miniaturized MEMS ultrasonic transducers new applications such as gesture recognition, personal fitness devices...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: NDT & E International
سال: 1992
ISSN: 0963-8695
DOI: 10.1016/0963-8695(92)90383-r