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Mechanics of Winding Laminate Webs and the Prediction of Machine Direction Curl
(2019-05-01)
Winding models that describe the residual stresses due to winding single layer webs at the end of roll-to-roll manufacturing machines began development over 50 years ago. These models have been used to reduce or avoid ...
Modeling web handling systems and a method for determining feedback controller gains
(2020-07)
Modeling the longitudinal dynamics and control of web handling systems requires accurate models of the primitive elements involved, and an understanding of the processes used for speed and tension control. Primitive elements ...
Determination of the Temperature Rise and Wrinkling Behavior of Webs Transiting Heated Rollers
(Oklahoma State University, 2014-05-01)
Many materials are manufactured and processed as webs. Examples of webs include: paper, plastic films, textiles, and metal foils. Due to the thin nature of webs, geometric instabilities can arise during web handling ...
Analysis of Moment Transfer in Multi-Span Web Systems
(Oklahoma State University, 2010-05-01)
Webs pass over numerous rollers in web processing machinery. A common problem is the formation of troughs and wrinkles in webs. Any out-of-plane web deformation in a span is called a trough and if this trough passes over ...
Analysis of the Unwind Section of an Industrial Web Processing Line
(Oklahoma State University, 2011-07-01)
The purpose of this thesis is to analyze the control strategies and tension performance of the unwind section of an industrial web processing line that manufactures composite flooring materials. The main elements of the ...
Development of Non-interfering Wound-on-tension Measurement Method
(Oklahoma State University, 2014-05-01)
The key element to understand the structure of a wound roll is the pressure inside it. This pressure cannot be too small or too large. If it is too small it may not withhold its structure. If it is too large it may damage ...
Development of nonlinear finite element codes for stability studies of web material with strain state dependent properties
(2011-12)
Scope and Method of Study: The objective of the proposed research is to develop user friendly finite element codes that will solve nonlinear instability problems associated with strain state dependent material properties ...