Method for determining amplitude and frequency of web flutter

Details Method for determining amplitude and frequency of web flutter Method for determining amplitude and frequency of web flutter

1990-04-02

1991-02-12

Alvo, Steve

Paper making and fiber liberation

Processes and products

With measuring, inspecting and/or testing

73 377, 73159, D21F 706

Patent

active

049921428

ABSTRACT:
An apparatus and method for determining the frequency and amplitude of flutter of a moving web in a web manufacturing operation, is shown to include a sensor for sensing the pressure of air in a region proximate the web and for generating a pressure signal reflective of the air pressure and a signal processor, connected to receive the pressure signal, for determining the amplitudes and frequencies of the flutter from the pressure signal and for generating an indication signal representative of the flutter amplitude and frequency.

REFERENCES:
patent: 4031741 (1977-06-01), Schaming
patent: 4179330 (1979-12-01), Page
patent: 4425809 (1984-01-01), Bankel et al.
patent: 4496428 (1985-01-01), Wells
patent: 4501642 (1985-02-01), Wells
patent: 4523451 (1985-06-01), Boster
patent: 4637727 (1987-01-01), Ahola et al.
Pramila, Antti, "Sheet Flutter and the Interaction Between Sheet and Air", Tappi Journal, pp. 70-74 (Jul. 1986).
Smook, G. A., Handbook for Pulp & Paper Technologists, Tappi, Atlanta, Georgia, Chapter 17, 1982 U.S.A. pp. 244-254.

Affiliated with

Also associated with

Rating

Method for determining amplitude and frequency of web flutter does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method for determining amplitude and frequency of web flutter, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for determining amplitude and frequency of web flutter will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-18672