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Now showing items 11-20 of 38
Measurement and prediction of the centering effect of a profiled roll on steel strips
(Oklahoma State University, 1999-06)
In a steel continuous processing line, the strip passes over an important number of rolls and strip walking can occur due to strip defects, roll profile or roll misalignment. Since decades, two solutions are used in order ...
Quantitative analysis of nip-induced tension by use of digital image processing
(Oklahoma State University, 1999-06)
Winding paper in contact with a drum leads to the production of nip-induced tension which, to a high degree, influences the structure of the roll. Thus, comprehending the processes in the nip, including each parameter ...
Dynamics of a web accumulator
(Oklahoma State University, 1999-06)
A conventional accumulator with no driven rollers and all rollers identical is studied for avoidance of excessive tension, slackness and slippage on the rollers. The total force imposed by the web spans on the carriage is ...
Stress field in a web during slitting-opening mode
(Oklahoma State University, 1999-06)
The dynamic stress field in a web during slitting is presented for the opening mode appropriate for razor slitting in the steady state. The integral equations for the general stress and strain fields in a web near a razor ...
Limitations to sensing of web tension by means of roller reaction forces
(Oklahoma State University, 1999-06)
Classical frequency response analysis of a dancer or a roller mounted on load cells reveals that such devices are severely limited in their ability to sense the dynamic tension in a web. The response of a tension control ...
Theoretical comparison of winding tension control methods
(Oklahoma State University, 1999-06)
Several methods are used to control tension in the winding zone. The two most common methods use either a tension signal from a loadcell or a position signal from a dancer system. Both techniques control tension, however, ...
Theoretical analysis of shear slitting of paper on the basis of a three-dimensional material law
(Oklahoma State University, 1999-06)
The slitting and cross cutting as one of the substantial manufacturing methods in paper equipment and paper processing, are characterized in many applications by practice problems, which lead to productivity and quality losses.
Optimization of equipment and process conditions for film winding
(Oklahoma State University, 1999-06)
Mathematical modeling of film winding has progressed to a point where it can offer much insight into the mechanics of this process. However, experience and testing on the actual hardware are still necessary to maximize ...
Web tension control in an industrial accumulator
(Oklahoma State University, 1999-06)
This paper presents the study of an industrial accumulator used in a web transport system. In order to understand the main characteristics of the accumulator and the causes of problems appearing during transient phases, ...
Contact mechanical approach to the winding nip
(Oklahoma State University, 1999-06)
A contact mechanical model for the winding nip, consisting of the wound roll, winding drum and the intervening sheet, is presented. The roll and drum are modeled as linear, orthotropic, homogeneous cylinders with a rigid ...