CompositesWorld
Issue link: https://cw.epubxp.com/i/450689
FEBRUARY 2015 38 CompositesWorld INSIDE MANUFACTURING W T F yoming est ixtures INC. • Over 40 types of fixtures in stock, ready to be shipped. • Expert consultation with Dr. Adams • Email or call today to discuss your fixture and custom design needs. Three and Four Point Short Beam Fixture ASTM D 790, D 6272, D 7264 2960 E. Millcreek Canyon Road Salt Lake City, UT 84109 Phone (801) 484.5055 Fax (801) 484.6008 email: wtf@wyomingtestfixtures.com www.wyomingtestfixtures.com Dr. Donald F. Adams President 50 years of Composite Testing Experience FLEXURE FIXTURES FOR EVERY SPECIMEN SIZE We provide quotes for a variety of grips, fxtures, and jigs. We carry over 40 types of fxtures in stock, available for immediate delivery. Email or call us today. We look forward to hearing from you. Three and Four Point Flexure ASTM D 790, D 6272, D 7264 Long Beam Flexure Fixture w/Alignment Rods and Bearings ASTM C 393, D 7249 Reversed Cycle Flexural Fatigue Miniature Flexure Fixture contract. We did trial panels for laminates, bonded sections and also sections which were bonded and riveted to validate the fnal assembled structure." Fast foam tools, oven-less cure Because NONA's epoxy infusion resin requires neither autoclave nor oven curing, low-cost tooling (see Step 1, p. 36) could be machined from high-temperature polyure- thane foam supplied by General Plastics Mfg. Co. (Tacoma, WA, US). Two foam grades, FR 4718 and FR 4518, were used because there wasn't enough of either in stock to meet the project's total need. NONA used tools of two types: Two 152 mm wide by 3m long C-channel tools and 1m wide by 3m long fat tools for the progressively smaller side plates, all supported by plywood substructures. "Everything was on wheels for ease of transport and work fow," notes Dietsch. "We would do layup in one area and then move the tool to the infusion and cure area, some 20 to 30 yards away." Fabrication of all 14 tools took slightly more than seven days. To save time, each tool was integrated into production as soon as it was fnished. "We could infuse up to four parts at one time, so one team was laying up C-chan- nels and side plates while another was infusing," Dietsch details. "We infused most of the parts within 35 to 40 minutes. We typically double-bag for a backup to ensure vacuum integrity and reduce the risk of losing the part." After parts were infused, they were rolled to the cure area while still in the tools and under vacuum. "We kept each part under vacuum in the second bag during the whole cure." Insulation boxes, made from hardware- store rigid foam insulation board and fberglass insulation, were then lowered over each tool to contain the heat gener- ated during exotherm (Step 4, p. 36). "We Camera and Beam, Ready for Action The completed REACH system was deployed and tested six times by week seven, including tests of the camera transport rover (inset). It was then transported to WIPP, assembled and used for training before deployment in following months. Source | Advantic & CRG Source | WIPP, US DoE