scholarly journals Discussion: “Effects of Temperature, End-Conditions, Flow, and Branching on the Frequency Response of Pneumatic Lines” (Franke, M. E., Malanowski, A. J., and Martin, P. S., 1972, ASME J. Dyn. Syst., Meas., Control, 94, pp. 15–20)

1972 ◽  
Vol 94 (1) ◽  
pp. 20-20
Author(s):  
A. J. Healey
Keyword(s):  
Frequency Response ◽  
End Conditions ◽  
Effects Of Temperature

Effects of Temperature, End-Conditions, Flow, and Branching on the Frequency Response of Pneumatic Lines

1972 ◽  
Vol 94 (1) ◽  
pp. 15-20 ◽  
Author(s):  
M. E. Franke ◽  
A. J. Malanowski ◽  
P. S. Martin
Keyword(s):  
Frequency Response ◽  
Experimental Results ◽  
Distributed Parameter ◽  
Transmission Line Theory ◽  
Amplitude Frequency Response ◽  
End Conditions ◽  
Line Theory ◽  
Effects Of Temperature ◽  
Different Diameters ◽  
Signal Sinusoïdal

Experimental results are presented to show the effects of temperature, flow, end-conditions, and branching on the small-signal sinusoidal amplitude frequency response of pneumatic lines. Distributed parameter transmission line theory for uniform lines is extended to include varying conditions of pressure and temperature along the line as well as series-connected lines of different diameters and parallel branching. The experimental results are compared with the formulated theory for several test configurations. Agreement between experiment and computer solutions based on the theory is relatively good.

Statistics of frequency-response estimates

1990 ◽  
Vol 137 (5) ◽  
pp. 290 ◽  
Author(s):  
J.L. Douce ◽  
L. Balmer
Keyword(s):  
Frequency Response

A novel method for the determination of linting propensity of paper

TAPPI Journal ◽  
2012 ◽  
Vol 11 (10) ◽  
pp. 9-17
Author(s):  
ALESSANDRA GERLI ◽  
LEENDERT C. EIGENBROOD
Keyword(s):  
Ash Content ◽  
The Novel ◽  
Offset Printing ◽  
Excellent Correlation ◽  
End Conditions ◽  
Bottom Side ◽  
Novel Method ◽  
Total Fraction

A novel method was developed for the determination of linting propensity of paper based on printing with an IGT printability tester and image analysis of the printed strips. On average, the total fraction of the surface removed as lint during printing is 0.01%-0.1%. This value is lower than those reported in most laboratory printing tests, and more representative of commercial offset printing applications. Newsprint paper produced on a roll/blade former machine was evaluated for linting propensity using the novel method and also printed on a commercial coldset offset press. Laboratory and commercial printing results matched well, showing that linting was higher for the bottom side of paper than for the top side, and that linting could be reduced on both sides by application of a dry-strength additive. In a second case study, varying wet-end conditions were used on a hybrid former machine to produce four paper reels, with the goal of matching the low linting propensity of the paper produced on a machine with gap former configuration. We found that the retention program, by improving fiber fines retention, substantially reduced the linting propensity of the paper produced on the hybrid former machine. The papers were also printed on a commercial coldset offset press. An excellent correlation was found between the total lint area removed from the bottom side of the paper samples during laboratory printing and lint collected on halftone areas of the first upper printing unit after 45000 copies. Finally, the method was applied to determine the linting propensity of highly filled supercalendered paper produced on a hybrid former machine. In this case, the linting propensity of the bottom side of paper correlated with its ash content.

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