Browsing OSU - International Conference on Web Handling by Title

Now showing items 171-190 of 429

    • Investigation of fluid mechanics of slotted air-jets for air reverser applications 

      Lopez, E.; Muftu, S. (Oklahoma State University, 2005-06)
      The fluid mechanics of the air flow, caused by a series of impinging air-jets, in a constant-height, rigid channel is investigated using computational fluid dynamics (CFD). The primary goal of this work is to investigate ...

    • Irreversible reduction of foil tension due to aerodynamical effects 

      Bouquerel, F.; Bourgin, P. (Oklahoma State University, 1993-06)
      Computation of the residual stress generated during the winding of a plastic film has been coped with by many authors. These studies are based on the assumption that the residual stresses mainly depend on two winding ...

    • Issues in modeling slitting of magnetic tapes 

      Andruet, R. H.; Cook, R. F.; Qualls, W. R. (Oklahoma State University, 2003-06)
      In order to quantify and understand the driving force for film layer fracture, delamination, and the cutting phenomena in general, an idealized two-dimensional "slitting" model was developed. The model includes two lower ...

    • Japanese patents investigation report on web handling technology 

      Ohnishi, S.; Matsumoto, K.; Walker, T. (Oklahoma State University, 1991-05)
      In order to initiate programs in web handling, it is necessary to understand the technical vector that has developed in the field. In this paper we have investigated 1784 Japanese patents on web handling technology that ...

    • Ke models: Theoretical dynamic subsystems of longitudinal web strain 

      Strike, G. P. (Oklahoma State University, 2011-06)
      Efficient design and optimization of many production processes often require models which predict transient and steady state web strains. To date, much attention has been given to modeling web strains much less than unity. ...

    • Laminate theory based 2D curl model 

      Kidane, Sam (Oklahoma State University, 2009-06)
      The laminate theory provides a method of analyzing the mechanics of multilayer composite laminates. With the appropriate definition of the load vector, the laminate theory can be extended to model curl resulting from ...

    • Large deformation winding models 

      Mollamahmutoglu, C.; Good, J. K. (Oklahoma State University, 2009-06)
      Almost all winding models incorporate the assumption of small linear deformations and strain in development. As such these models treat the addition of a layer of web to a winding roll with linear analysis using linear ...

    • Lateral control of a web using estimated velocity feedback 

      Pagilla, P. R.; Dwivedula, R. V.; Zhu, Y. L.; Mandal, S. S.; Hopcus, K.; Haque, J. (Oklahoma State University, 2001-06)
      The focus of this paper is on lateral control of a web using estimated motor velocity feedback. A reduced state velocity observer is designed to estimate the motor velocity based on the measured lateral position of the web ...

    • Lateral deflections of webs in air-flotation ovens 

      Moretti, P. M. (Oklahoma State University, 2001-06)
      A long web span supported by many, regularly spaced, alternating air-bars is studied. The focus is on the lateral forces on the web due to the interaction of lateral curvature with out-of-plane deflections. The effect of ...

    • Lateral dynamics of non-uniform webs 

      Swanson, Ronald P. (Oklahoma State University, 2009-06)
      A new method of generating and testing cambered web has been developed. Experimental lateral static data is presented for twenty six different conditions and dynamic data is presented for five of these conditions. Numerous ...

    • Lateral dynamics simulation of webs having cross-machine direction variation 

      Lange, Stephen; Looney, Michael; Carrle, Jeremy (Oklahoma State University, 2013-06)
      Webs often include sectional variation in caliper or modulus of elasticity as a result of undesirable manufacturing variation or by intentional design. These variations influence wrinkle formation and tracking control in ...

    • Lateral mechanics of an imperfect web 

      Olsen, J. E. (Oklahoma State University, 2001-06)
      A model describing the lateral mechanics of an imperfect web has been derived which brings forward information on the much debated fourth boundary condition. The model is based upon a generalized beam theory. Calculations ...

    • Lateral mechanics of baggy webs at low tensions 

      Olsen, J. E. (Oklahoma State University, 2005-06)
      Existing mathematical models describing lateral movement of webs such as paper or plastic film, assume that the entire width of the web is carrying tension or that the web is capable of supporting compressive stresses. For ...

    • Lateral response and control of a multi-span web system to dynamic changes to the web and conveyance hardware 

      Forrest, A. W., Jr. (Oklahoma State University, 2001-06)
      A multi-span model that predicts the lateral response of webs to changes in the upstream position of the web and any type of motion of the included rolls is presented. The model uses a beam approximation for the deflection ...

    • Layer-to-layer slippage within paper rolls during winding 

      McDonald, J. D.; Menard, A. (Oklahoma State University, 1997-06)
      Crepe wrinkles are created during reeling and winding of paper rolls against a rolling drum. These defects are associated with interlayer movement of paper within the body of the roll. To study this movement, rolls made ...

    • Limitations to sensing of web tension by means of roller reaction forces 

      Shelton, J. J. (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 ...

    • Linear edge sensor 

      Haque, M.; Winter, D.; Hueppelsheuser, D.; Newton, J.; Storie, G. (Oklahoma State University, 1999-06)
      In modern industrial process controls, web guiding is becoming very demanding due to variations in web materials, variable web widths, and the need for better guiding accuracy. Selecting the appropriate sensor for various ...

    • Linear image detector-based edge scan sensor 

      Haque, M. M.; Yates, J.; Schmidt, S.; Winter, D.; Hueppelsheuser, D.; Storie, G. (Oklahoma State University, 2001-06)
      It has always been problematic to accurately sense a nonwoven (spunbond) material edge by an analog photoelectric or ultrasonic means. A sensor based on analog photoelectric or ultrasonic detection determines the lateral ...

    • Longitudinal dynamics of a winding zone 

      Ries, J. P. (Oklahoma State University, 1995-06)
      The longitudinal dynamics of a moving web in a tension controlled winding zone was modeled and analyzed. The dynamics of the zone included the effects of idler roll inertia, web elasticity, package inertia and feedback ...

    • Longitudinal slip in rolling contact 

      Fugmann, Uta; Beier, Wolfgang (Oklahoma State University, 2013-06)
      In printing machines incorporating indirect printing technology, the image or pattern is first printed onto a blanket cylinder having an elastic rubber surface. Subsequently, the pattern is transferred to the substrate. ...