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2. Tasks 2.1. Develop a family of interchangeable sheets and channel forms for the LS VARTM Process and evaluate vacuum bagging films for suitability with the process which are able to provide the temporary infusion pathways to fabricate 99% of all infusion parts. The most efficient bagging material will be determined for use with the LS VARTM Process. This material must be flexible enough for the forming of the channels and elastic enough to return to its flat state when the upper vacuum is removed. Results: Samples were acquired of likely bagging materials from the film manufactures and evaluated for their elongation properties and elastic return. The evaluation was done by fabricating small test pieces which include flat panels, curves, and corners. A Sunrez vinyl ester resin 4194 was used in the manufacture of these test parts. The following are the results of those trials. The following films have been tested for elongation FILM Film Technology EVALUATION Fair elongation Fair return Fair elongation Fair return Good elongation bad return Too Stiff for Maximum flow but may be applicable for thin parts All of these films had adequate elongation but suffered from styrene attack We have requested other prototype films not susceptible to styrene. Good elongation and good return in thicker films Good elongation, Ok return Good elongation Ok return PA 6000 PA6600C PO 9200 PET 200 Textured Film Textured Film Smooth Film Textured Film Airtech Films Strechlon Series Smooth Films 200 700 800 900 Airtech Standard bagging films KM1300 WN 1500 DP 1000PDF Image | Affordable NDM Vacuum Assisted Resin Transfer Molding
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