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Now showing items 11-20 of 26
Mathematical and experimental investigation of the stack compression of films
(Oklahoma State University, 1993-06)
An analytical model has been developed which predicts the stack stiffness of multiple layers of films with rough surfaces. Film surfaces are approximated by asperity distributions measured using commercially available ...
Changes in web tension profiles and paper properties during repeated rewinding
(Oklahoma State University, 1993-06)
Newsprint rolls with a diameter of about 125 cm have been run six times through a rewinder. The changes in the CD web tension profile have been recorded during the rewindings. The roll hardness has been measured before and ...
Instrumenting rolling nips for video recording and strain recording
(Oklahoma State University, 1993-06)
An apparatus has been constructed to study the effect of a rolling nip on multiple layers of paper or other material. The use of a roller in contact with the surface of a winding product roll excludes air and produces ...
Measurement of web tension distribution by point source pulse excitation
(Oklahoma State University, 1993-06)
A web is a material that is produced as a continuous sheet and stored in wound roll form. Mechanics of web material handling in production, coating or conditioning, and winding operations affect web uniformity and the ...
Strip walk simulation for continuous processing lines
(Oklahoma State University, 1993-06)
Although the prevention of lateral instability on continuous processing lines called "strip walk" is important in achieving high productivity and improving quality for steel industry, empirical systems have been applied ...
Effect of air entrainment in centerwound rolls
(Oklahoma State University, 1993-06)
Internal stress models for centerwound rolls have existed for over thirty years but no model to date has accounted for air which is entrained due to the web velocity and the viscosity of air. This paper reports the results ...
Mechanics of web spreading
(Oklahoma State University, 1993-06)
Web spreading systems are governed by a universal set of web handling principles such as bending, minimal energy path, normal entry, and traction. These laws, which apply for all web materials and spreading systems, can ...
Effects of PID gains for controller with dancer mechanism on web tension
(Oklahoma State University, 1993-06)
A dancer mechanism is widely used in connection with a tension controller in the tension control systems for web printing presses. The common tension controllers perform proportional, integral, and/or derivative (PID) ...
Air support conveyance of uniform and non-uniform webs
(Oklahoma State University, 1993-06)
A web span model and solution technique have been developed to determine the stresses and deflections of uniform and non-uniform webs, subject to side loading from an air support system. Formulas are given to calculate the ...
Dynamic behavior of dancer subsystems in web transport systems
(Oklahoma State University, 1993-06)
A dancer subsystem may be used as a tension measurement or as a disturbance attenuator depending on its design. The design of a dancer subsystem to accomplish a desired result requires the development of a dynamic model ...