CompositesWorld
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JULY 2017 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, D 2344 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, fixtures, and jigs. We carry over 40 types of fixtures 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 blade design firm now, WINDnovation [Berlin, Germany], to calculate the design advantages of using this polyurethane resin." Klausen believes that even designers who prefer to take the drop-in approach one structure at a time on their current produc- tion blades will nevertheless redesign their next-generation blades to fully capture the PU property benefits. "is is why we are fully documenting the design possibilities with WINDnovation," he adds. "We will also move forward with further demonstrating the resin in larger blades," says Klausen. e current plan is to build further full-blade prototypes and test them extensively during the next year. "Our goal is to provide test results that will be accepted interna- tionally," he notes, "so we will choose a well-recognized test facility for this demonstration." ere is also the possibility to do more demonstrations with DLR. For its part, SAERTEX would like to partici- pate in larger blade demonstrations using its new core material, SAERfoam. "is would replace balsa wood core for a 25% weight reduction, depending on the blade design," says Winter, who sees applications for the new core beyond wind, such as in marine and construction/infrastructure. Klausen also sees opportunities beyond wind for Covestro's new PU infusion system, but for now, the focus is on finishing the development for rotor blades. "We will spend 2017 docu- menting all of the resin and composite mechanical properties as well as the aging properties," he observes. "We will also do a lot of health, safety and envi- ronmental testing and documentation." Klausen explains that Covestro has many internal standards that exceed, sometimes significantly, others in the industry, such as DNV GL. "We must fulfill all of these first — for example, performing grinding on cured compos- ites with this resin, collecting the dust and analyzing it," he notes. "We will then be able to present a complete package to the end-users." In the meantime, his team is finalizing further demonstra- tions, and aiming for final commercial- ization in 2018. CW senior editor Ginger Gardiner has an engineering/materials background and more than 20 years of experience in the composites industry. ginger@compositesworld.com Read this article online | short.compositesworld.com/PUBigBlade Read more about meter/mix/dispense equipment online | short.compositesworld.com/MMD