System and process for measuring ultrasonic velocity

Details System and process for measuring ultrasonic velocity System and process for measuring ultrasonic velocity

1985-04-11

1987-08-25

Birmiel, Howard A.

Measuring and testing

Sheet, woven fabric or fiber

73598, 73639, 310334, G01N 2904

Patent

active

046884238

ABSTRACT:
A system is provided for measuring the velocity of vibrations in a moving web, such as a sheet of paper. The system includes a transmitter coupled to the paper to transmit waves and a receiver to receive the waves. A signal processing system is used to determine the velocity.

REFERENCES:
patent: 3612920 (1971-10-01), Bantz
patent: 3628375 (1971-12-01), Pagano
patent: 3678737 (1972-07-01), Miller
patent: 3822588 (1974-07-01), Knight et al.
patent: 4291577 (1981-09-01), Baum et al.
patent: 4302976 (1981-12-01), Bull
patent: 4519251 (1985-05-01), Dickson
patent: 4574634 (1986-03-01), Pappano
"Development of a Sonic Modulus Test Device for the On-Line Measurement of Elastic Moduli of Wet Paper Webs" by Edwin J. Senko, a thesis submitted for the Master of Science Degree, State University of New York, College of Environmental Science and Forestry (Sep. 1983).
Lu Article in Jun. 1975 issue of Tappi Journal.

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