Browsing OSU - International Conference on Web Handling by Title
Now showing items 315-334 of 429
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Sensorless tension control of webs
(Oklahoma State University, 1997-06)Production plants with continuous moving webs have a complex structure where mechanical, electrical and control problems are involved. To solve the problems of these systems, it is necessary to take the entire system into account. -
Sensors and signal processing: An optical edge sensor for transparent film applications
(Oklahoma State University, 1991-05)Sensing the edge of transparent film webs has always been somewhat difficult. Optical sensors typically see through the low opacity webs while pneumatic, ultrasonic and other sensors have their own sets of unique problems. -
Shear effects and lateral dynamics of imperfect webs
(Oklahoma State University, 2003-06)A mathematical model describing the lateral dynamics of an imperfect web has been derived. The model includes the effect of shear forces. This was enabled by the development of a theory for beams of inhomogeneous materials. ... -
Shear in multispan web systems
(Oklahoma State University, 1997-06)Wrinkling research has been concentrated in past years on understanding web wrinkling in isolated spans in web lines [1]. It is expected that some of the fundamentals which govern single span behavior will also apply to ... -
Shear slitting of aluminum webs
(Oklahoma State University, 2005-06)Shear slitting of aluminum webs using both disk knives and block knives were investigated using a laboratory slitter. The effects of the clearance, overlap, blade overdrive, and cant angle on burr height were studied on ... -
Shear slitting of aluminum webs using block knives
(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 ... -
Shear wrinkling in isolated spans
(Oklahoma State University, 1997-06)Web wrinkling is a problem which plagues the web process industry. Most webs are quite thin, on the order of 4-150 μm, and become subject to lateral shear during transport either by misaligned rollers or by guide rolls. ... -
Simple model to predict web-to-roller traction
(Oklahoma State University, 2003-06)We have studied the traction developed between a thin, flexible web and a rotating cylindrical roller. We present a new analytic model for high-wrap, circumferentially grooved rollers that couples air film pressure, web ... -
Simplified model for lateral behavior of short web spans
(Oklahoma State University, 2001-06)For ratios of L/W less than approximately 2.0, the effects of shear stresses on the shape of a web must be considered. In basic manufacturing and processing of webs, such ratios are very common. The analysis of a general ... -
Simulation of wrinkling patterns in webs due to non-uniform transport conditions
(Oklahoma State University, 1993-06) -
Spatially dependent transfer functions for web lateral dynamics
(Oklahoma State University, 2017-06)In this paper we derive spatially dependent transfer functions for web span lateral dynamics which provide web lateral position and slope as outputs at any location in the span; the inputs are guide roller displacement, ... -
Static and dynamic properties of CFRP rollers
(Oklahoma State University, 2009-06)Carbon fiber rollers combine high axial stiffness with low weight. This leads to higher bending frequencies and increased critical speed and makes them suitable for high speed machines as web guide rollers or as other ... -
Stick-slip behavior of paper during friction testing
(Oklahoma State University, 1995-06)Paper often exhibits oscillatory stick-slip motion during friction testing using a horizontal sled apparatus. The motion consists of a constant-amplitude oscillation in the force required to move the sled, which may ... -
Strain-inducing mechanism of a rolling nip on a paper stack
(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
(Oklahoma State University, 2003-06) -
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 ... -
Stresses within rolls wound in the presence of a nip roller
(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
(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
(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
(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 ...