Measuring and testing – Vibration – By mechanical waves
Patent
1989-06-02
1990-12-11
Myracle, Jerry W.
Measuring and testing
Vibration
By mechanical waves
G01N 2900
Patent
active
049761501
ABSTRACT:
A transducer including a piezoelectric layer and a coupling medium in the form of matching layers for matching the transducer impedance to that of air. The transducer may be used in the measurement of the strength of paper, the detection of defects in a multilayer composite material and the measurement of their properties, among other uses.
REFERENCES:
patent: 3378705 (1968-04-01), Bacon
patent: 3928777 (1975-12-01), Massa
patent: 4211948 (1980-07-01), Smith et al.
patent: 4291577 (1981-09-01), Baum et al.
patent: 4297607 (1981-10-01), Lynnworth et al.
patent: 4519249 (1985-05-01), Hunt
patent: 4523122 (1985-06-01), Tone et al.
patent: 4594897 (1986-06-01), Bantz
patent: 4672591 (1987-06-01), Breimesser et al.
patent: 4674334 (1987-01-01), Chimenti et al.
Lawrence C. Lynnworth, "Ultrasonic Impedance Matching from Solids to Gases", 1965, pp. 37-48.
V. I. Zaklyukovskii and G. T. Kartsev, "Use of Piezoelectric Transducers for Contactless Ultrasonic Product Insepction", Soviet NDT, 1978, pp. 211-216.
M. Luukkala, P. Heikkila and J. Surakka, "Plate Wave Resonance-A Contactless Test Method", Ultrasonics, 1971, pp. 201-208.
Emmanuel P. Papdakis, "Ultrasonic Methods for Modulus Measurement in Paper", Tappi, 56, No. 2, 1973, pp. 74-77.
Ming T. Lu, "On Line Measurement of Strength Characteristics of a Moving Sheet", Tappi, 58, No. 6, 1975, pp. 80-81.
C. C. Habeger, R. W. Mann & G. A. Baum, "Ultrasonic Plate Waves in Paper", Ultrasonics, 1979, pp. 57-62.
Y. Bar-Cohen, "NDE of Fiber Reinforced Composite Materials--A Review", Materials Evaluation, 44, 1986.
T. S. Jones, "Inspection of Composites Using the Automated Ultrasonic Scanning System (AUSS)", Materials Evaluation, 43, 1985.
Bethlehem Steel Corporation
Myracle Jerry W.
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