Browsing OSU - International Conference on Web Handling by Author "International Conference on Web Handling (2007)"

Now showing items 1-20 of 22

    • Advanced controls for web handling: Ready for production? 

      Carlson, Dan (Oklahoma State University, 2007-06)
      The science of web handling has numerous control challenges. Longitudinal control is especially challenging because the machine is a distributed, high order, tightly coupled flexible system. Advanced controls were developed ...

    • Aerodynamic dancer in web handling 

      Hong, E. Y.; Shelton, J. J.; Chang, Y. B. (Oklahoma State University, 2007-06)
      This paper discusses the aerodynamic dancer that is effective in a wide range of frequency and do not cause excessive lateral web deflection, touching, or flutter. An aerodynamic model of air-turn bar has been developed. ...

    • Applying hundreds of years of scientific and engineering knowledge in 50 years of time 

      Shelton, J. J. (Oklahoma State University, 2007-06)
      Aspects of lateral behavior discussed in this paper include (1) the concept of a web span as a tensioned beam, analyzed for large ratios of L/W, small ratios, and general ratios, and (2) static interaction of two spans and ...

    • Auto taper tension profile maker in a converting machine 

      Lee, C. W.; Lee, J. W.; Shin, K. H.; Kwon, S. O. (Oklahoma State University, 2007-06)
      Winding is an integral operation in almost every web handling processes. Center-wounding are suitable and a general scheme in winding systems. However, the internal stresses within center-wound rolls can cause damage such ...

    • Behavior of a thin flexible twisted web 

      Brown, Jerry L. (Oklahoma State University, 2007-06)
      In an earlier IWEB paper, "A New Method for Analyzing the Deformation and Lateral Translation of a Moving Web" [5], a nonlinear PDE model, suitable for use with low-cost FEA software, was developed. That work considered ...

    • Design of fixed structure controllers for web tension control 

      Pagilla, P. R.; Cimino, M.; Knittel, D. (Oklahoma State University, 2007-06)
      It is a common practice in industry to design a Proportional-Integral (PI) velocity feedback controller cascaded with a PI outer tension loop to regulate web velocity and tension to their desired values. The controller ...

    • Free vibration analysis of thin, tensioned, helically wrapped webs using Mindlin-Reissner finite element method 

      Lopez, Ernesto; Masters, James; Muftu, Sinan (Oklahoma State University, 2007-06)
      Free vibration analysis of a thin tensioned web, wrapped around a reverser was studied. The effect of helix angle was considered. The eigen-problem was formed using finite elements and solved numerically. Design parameters ...

    • Gauge optimization of the reference tension in winding systems using wound internal stresses calculation 

      Boutaous, M.; Knittel, D.; Bourgin, P. (Oklahoma State University, 2007-06)
      In winding process, the quality of the roll is directly connected to its stress state. The winding tension is the most significant parameter which plays an important role in the stresses generated within a roll, during ...

    • Interactions of time dependent, thermal and hygroscopic characteristics and runnability properties of paper 

      Welp, E. G.; Niebuhr, V. (Oklahoma State University, 2007-06)
      For purposes of design and optimization of industrial processing, many of the physical properties of paper have to be taken into account. The knowledge of the mechanical properties as part of the physical ones must be ...

    • Manufacturing and performance evaluation of carbon nanotube-parylene sandwich thin films 

      Chen, Chia-Ling; Lopez, Ernesto; Jung, Yung-Joon; Dokmeci, Mehmet R.; Muftu, Sinan (Oklahoma State University, 2007-06)
      Parylene-C, an inert and relatively mechanically strong polymer, which can be deposited in a conformal manner, is a promising substrate candidate for flexible electronics (Flextronics) devices. Parylene-CNT sandwich-films ...

    • Mechanics of grooved flexible spreader rolls 

      Good, J. K.; Markum, R. (Oklahoma State University, 2007-06)
      All known web spreading hardware work based upon one of three principles. Sometimes it is unclear which principle(s) apply to a given spreading device. The flexible spreader roller is such a device. In this paper we will ...

    • Mechatronic damping for contact rolls in film winders 

      Sieber, Bernd (Oklahoma State University, 2007-06)
      The winding of a web is one of the most extensive and error-prone processes in web handling. All known solutions are limited in the range of properties and production parameters. To broaden the mentioned limits, a new ...

    • Modeling of laminated webs 

      Pagilla, P. R.; Reid, K. N.; Newton, J. (Oklahoma State University, 2007-06)
      A dynamic model of the longitudinal behavior of a laminated web is developed. A single web model that takes into account both thermal and hygral strains is developed first from first principles; the model assumes heat ...

    • Modeling wound rolls using explicit FE methods 

      Kandadai, B. K.; Good, J. K. (Oklahoma State University, 2007-06)
      A new method of wound roll analysis using an explicit finite element formulation is presented in this paper. The stresses developed in center wound rolls with and without an undriven nip roller are discussed and compared ...

    • New method for measurement of wound-in-tension in webs wound into rolls 

      Good, J. K.; Kandadai, B. K.; Markum, R. (Oklahoma State University, 2007-06)
      The Wound-In-Tension (WIT) is the tension in the outermost layer of a winding roll. The Wound-In-Tension is an important parameter that controls the stresses inside the wound roll which in turn determines the quality of ...

    • Peeling process development for thin flexible webs 

      Lei, Herong; Cole, Kevin A. (Oklahoma State University, 2007-06)
      Many consumer products are manufactured from continuous media. When the media is thin and flexible, it is referred to as a web. Webs are typically manufactured by extrusion or casting; however, for some applications, a ...

    • Practice application and design of concave rollers 

      Walker, T. J. (Oklahoma State University, 2007-06)
      A concave roller is an effective and inexpensive wrinkle-preventing roller design. By definition, a concave roller (a.k.a. a reverse-crowned roller) is a roller with a larger diameter at the edges than at its center. But ...

    • Pseudo 3D viscoelastic winding model 

      Yu, Haowen; Poh, Edmond; Good, J. K.; Lu, Hongbing (Oklahoma State University, 2007-06)
      A pseudo 3D winding model that has considered orthotropic viscoelastic effects during winding and storage has been developed and implemented in a code revised from the 2D viscoelastic winding code developed by Qualls and ...

    • Shear slitting of aluminum webs using block knives 

      Lu, Hongbing; Ma, Jin; Li, Ming; Becker, Bernie (Oklahoma State University, 2007-06)
      C Shear slitting of two aluminum webs, namely 1050 H18 of 0.28 mm thick and 5182 H19 of 0.20 mm thick, using block knives are investigated through experiments using a laboratory slitter. This investigation focused on two ...

    • Vibration of two axially translating media interconnected by Winkler elastic foundation 

      Gaith, M.; Muftu, S. (Oklahoma State University, 2007-06)
      Transverse vibrations of two translating strings interconnected by a Winkler elastic foundation, and subjected to axial loading are investigated. The natural frequencies are composed of two infinite sets, representing ...