NDLI: Ultrasonic in-line sensors for inclusion detection in liquid metals

Content Provider	IEEE Xplore Digital Library
Author	Ihara, I. Burhan, D. Aso, H. Kamado, S. Kojima, Y.
Copyright Year	2002
Description	Author affiliation: Dept. of Mech. Eng., Nagaoka Univ. of Technol., Japan (Ihara, I.; Burhan, D.)
Abstract	A high temperature ultrasonic sensor for detecting inclusion particles in molten metals is presented. The sensor consists of a conventional piezoelectric transducer and a focused waveguide, and provides high spatial resolution measurements in molten metals in a pulse-echo mode at 10 MHz. A taper-shaped clad buffer rod is used as the waveguide. In order to design the waveguide, elastic wave propagation in the rod is evaluated by a numerical simulation using a finite difference method. Focusing ability of the acoustic lens fabricated at the end of the rod is also examined numerically. Using the developed sensor, backscattered echoes from alumina particles of 160 /spl mu/m suspended in molten aluminum at 1073 K have clearly been observed.
Sponsorship	Ultransonics Ferroelectr., & Frequency Control Soc
Starting Page	811
Ending Page	814
File Size	6258824
Page Count	4
File Format	PDF
ISBN	0780375823
ISSN	10510117
DOI	10.1109/ULTSYM.2002.1193521
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2002-10-08
Publisher Place	Germany
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Temperature sensors Pulse measurements Acoustic waveguides Piezoelectric transducers Spatial resolution Acoustic measurements Ultrasonic variables measurement Acoustic pulses Acoustic propagation Numerical simulation
Content Type	Text
Resource Type	Article

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