Browsing OSU - International Conference on Web Handling by Title

Now showing items 328-347 of 429

    • Strain-inducing mechanism of a rolling nip on a paper stack 

      Arola, K.; von Hertzen, R. (Oklahoma State University, 2003-06)
      The rolling of a cylindrical drum on a stack of separate paper sheets is studied using the finite element method. A two dimensional model under plane strain conditions is considered. The material of the sheets is modeled ...

    • Strategies for competitiveness 

      Simons, J. W. (Oklahoma State University, 2003-06)

    • Stress field in a web during slitting-opening mode 

      Lu, H.; Liu, C. (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 ...

    • Stresses within rolls wound in the presence of a nip roller 

      Good, J. K.; Wu, Z.; Fikes, M. W. R. (Oklahoma State University, 1991-05)
      Models which can be used to calculate the internal stresses within wound rolls of web material have all been confined to the center winding technique to date. In this publication a new boundary condition is presented which ...

    • Strip tension control considering the thermal strain in multi-span systems with temperature change 

      Shin, K. H.; Jang, J. I.; Kim, G. Y. (Oklahoma State University, 2001-06)
      The mathematical model for tension behaviors of a moving web by Shin [1] is extended to the tension model considering the thermal strain due to temperature variation in furnace. The extended model includes the terms that ...

    • Strip walk simulation for continuous processing lines 

      Uchida, Hiroyuki; Suzuki, Noriyuki; Kikuchi, Atsushi (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 ...

    • Structural evaluation of roll quality and in-roll stress analysis using a novel on-line measurement technique 

      Jaafar, H.; Hamad, W. Y.; Kabore, P.; Wang, H. (Oklahoma State University, 2001-06)
      In a previous paper (Jaafar et al., 1999) we reported on the rudimentary development of a new technique for the on-line measurement of a roll's coefficient of restitution (Cr) as it is being wound, and enunciated the ...

    • Study of CD elongation of core in winding 

      Ilomaki, M.; Jorkama, M. (Oklahoma State University, 2003-06)
      In this paper the elongation of a core in a roll bottom is studied experimentally and theoretically. The CD elongation effects are of interest especially because they are known to contribute prominently to a two-drum winder ...

    • Study of oscillation 

      Roisum, David R. (Oklahoma State University, 2017-06)
      There are many reasons to consider oscillation. Most fall under the overall desire to smear out streakiness in web caliper (basis weight, gage, thickness etc) so that it doesn't build up on some downstream process; most ...

    • Study of stress-strain relation for paper roll 

      Arola, K.; von Hertzen, R.; Jorkama, M. (Oklahoma State University, 2001-06)
      In the present method a wound roll of paper is loaded against a nip roller and the measured values of the nip width and the roll indentation are compared with the corresponding calculated values of the non-linear problem. ...

    • Study of three-dimensional nonlinear nip mechanics 

      Diehl, Ted; Stack, Kenneth D.; Benson, Richard C. (Oklahoma State University, 1993-06)
      An understanding of nip pressure and deformed nip geometry is of vital importance to the design of web handling equipment. Axial variations in nip pressure and deformed nip geometry can lead to poor product performance and ...

    • Study on strip crossbow correction for uniform coating weight control 

      Jee, Changwoon (Oklahoma State University, 2015-06)
      In coating process of continuous galvanizing line, transverse crossbow is frequently found in the case of thick gage or high strength steel processing. This transverse crossbow arises due to the unbalanced residual stress ...

    • Surface compression of wound rolls 

      Mollamahmutoglu, C.; Ganapathi, S.; Good, J. K. (Oklahoma State University, 2013-06)
      Stress levels and profiles in the vicinity of contact between a wound roll and a nip or a rigid surface are important for the quality of the product during manufacturing or storage stages. Excessive or insufficient pressure ...

    • Systematic method for determining the controller gains in a multi-span web line 

      Reish, Benjamin D.; Reid, Karl N. (Oklahoma State University, 2019-06)
      A web line may have multiple locations where feedback systems are used to control web and roller speeds, and web tension. The Euclid Web Line (EWL) in the Web Handling Research Center at Oklahoma State University is such ...

    • Systems approach to reducing winding defects at Alcoa-Warrick operations 

      Becker, B. J. (Oklahoma State University, 1997-06)
      When processing coated aluminum, coil winding defects can be a major detractor to recovery, flowtime, and customer satisfaction goals for coil coating and slitting operations. Over the past several years, extensive studies ...

    • Taxonomy of web and winding defects 

      Roisum, David R. (Oklahoma State University, 2019-06)
      Constructing taxonomies can be useful for the researcher and troubleshooter alike. First, it gives us a precise language for conversation within our own plant or with our customers. This language helps us avoid using the ...

    • Taxonomy of wrinkles 

      Walker, Timothy J. (Oklahoma State University, 2009-06)
      Taxonomy is the practice and science of classification. Without taxonomy, everything is lumped into one pot and confusion prevails. All wrinkled or buckled webs should not be filed under one category. Just as birds are ...

    • Tenacity, fracture mechanics and unknown coater web breaks 

      Swinehart, D.; Broek, D. (Oklahoma State University, 1995-06)
      A web break model, based on fracture mechanics, was used to investigate unknown coater web breaks. Runnability was defined as Lb , the length between breaks. The model includes the size distribution of defects (holes and ...

    • Tension allocation in three dimensional wound roll 

      Hoffecker, P.; Good, J. K. (Oklahoma State University, 2005-06)
      Much consideration has been given to the relationship between web line tension and the stresses they induce in three dimensional wound rolls. Three dimensional wound rolls are distinctive because their radial and circumferential ...

    • Tension control in thin film production lines 

      Oedl, G. (Oklahoma State University, 2005-06)
      A comparison of speed and tension control in pull roll stand at film production lines is given. One typical error (periodic error) of standard gear box drives is analyzed and discussed. The design of a active tension control ...