CompositesWorld
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JULY 2017 36 CompositesWorld INSIDE MANUFACTURING resin was achieving. But we also pursue top-class solutions for industry as a general approach." Klausen did not seek traditional polyurethane machine specialists because they lacked familiarity with vacuum degas- sing in the resin tank. He explains, "Hübers' background is in cast polymers for electrical transformer applications, where any bubbles can generate a spark. So, they have developed very tight process control along with inline vacuum degassing of the resin, which provides very reliable, consistent and high-quality infusion results." Demonstration and future development All project partners were on site for infusion of the 45m spar cap. "e team worked well together. DLR was very experienced and there also were some staff from a rotor blade manufacturer who provided assistance," says Winter. First, the mold was prepared by applying a release film using standard materials and process (Step 2, p. 34). Next, 52 plies of the dry glass fiber uni materials were placed into the mold (Step 3, p. 34). en the vacuum bag, resin supply/feed lines and vacuum lines were installed (Step 4, p. 34) and the infusion was started (Step 5, p. 35). e setup used just one central feed line; two addi- tional lines were available as backups only. Infusion of the spar cap was completed in 46 minutes. components, typically achieved using specialized equipment (see Learn More, p. 38). Klausen explains selection of the final project partner. "Hübers was brought in because we wanted to use very advanced process control," he says. "One reason for this was to minimize the processing variability, so that we could see what the FIG. 2 Infusion control equipment a key Hübers provided resin meter/mix/dispense equipment with inline degassing that ensured reliable, consistent and high-quality infusion results. Source | Hübers PRESENTER PRESENTED BY altair.com JEFFREY WOLLSCHLAGER Senior Technical Director EVENT DESCRIPTION: Fiber reinforced injection molded components present unique challenges, such as characterizing the stochastics of the principal fiber orientations spatially throughout a part, mapping those principal fiber orientations onto a structural mesh, and finally developing and applying multiscale material models to obtain stress/strain results at the constituent-level of the reinforced injection molded component to simulate its behavior. PARTICIPANTS WILL LEARN: • Challenges of multi-material modeling for fiber reinforced injection molding • Development of multiscale material models for fiber reinforced injection molding • Transfer of fiber orientation tensor results from manufacturing simulations onto a structural mesh • Interfaces of Altair products with various macro solvers Multiscale Material Models to Simulate Fiber Reinforced Injection Molded Components July 20, 2017 • 2:00 PM EST REGISTER TODAY FOR WEBINAR AT: http://short.compositesworld.com/Altair720