2026-09-21T14:28:33Z https://www.ideals.illinois.edu/oai-pmh

oai:www.ideals.illinois.edu:2142/82381 2023-07-11 col_2142_5131 col_2142_11615 com_2142_5130 com_2142_9130 com_2142_8903

McHugh, Anthony J. Henrichsen, Lars Krister 2015-09-25T20:43:26Z 2015-09-25T20:43:26Z 10000-01-01 2006 2006 Perturbation analysis, which has never been applied to film blowing, was used to explore the effect of system disturbances on the process. Results showed that perturbations related to heat transfer and inflation pressure were more significant than the effect of die swell. In addition, crystallinity is shown to have a stabilizing effect on the system, with more crystallinity dampening the effect of perturbations. Stability diagrams for each material and model show reasonable results, with higher blow-up ratios becoming unstable for all draw ratios. Made available in DSpace on 2015-09-25T20:43:26Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 3223615.pdf: 3151524 bytes, checksum: 73077084d7ef47b2947b8017bc901b48 (MD5) Previous issue date: 2006 Embargo set by: Seth Robbins for item 83662 Lift date: Forever Reason: Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs U of I Only 132 p. Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 2006. http://hdl.handle.net/2142/82381 (MiAaPQ)AAI3223615 eng Engineering, Chemical Steady State Modeling and Dynamic Analysis of Film Blowing text Chemical Engineering Chemical Engineering University of Illinois at Urbana-Champaign Dissertation Ph.D.