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Owens Corning Introduces New Range for Rotor Blade Applications

08 April 2014

Owens Corning has introduced an enhanced WindStrand Type 30 roving products platform for weaving fabrics.

The new platform is designed to deliver productivity and performance benefits to OEMs constructing and operating wind turbines in challenging on- and off-shore locations with differing wind speed conditions.

In combination with this redefined wind product platform, Owens Corning also unveiled its next-generation Ultrablade G3 unidirectional and new Ultrablade Triax fabric solutions for specific wind turbine rotor blade applications.

“The primary objective of turbine OEMs is to reduce total energy production cost to align wind power with other energy sources,” says Dr. Christopher Skinner, Director of Product Platforms for Owens Corning’s Composite Solutions Business. “To help achieve a reduction in the cost of energy, future wind turbines need to be manufactured as economically as possible while generating as much power as possible. Our new ranges of WindStrand and Ultrablade products deliver enhanced performance to address these needs.”

Owens Corning explains that the new product range comprises WindStrand 2000, WindStrand 3000, and WindStrand 4000 Type 30 rovings all of which provide high weaving efficiencies for fabrics with optimized performance at 90° (T). Each product is designed to perform at differing higher fibre volume fraction (FVF) levels. The new WindStrand products deliver lower resin consumption, contributing to an overall blade weight reduction of between 2 and 6 percent, depending on the specific application and roving utilized. The new Ultrablade G3 unidirectional (UD) fabric offers a high modulus and 90° (T) performance, and up to 20-percent greater resistance to long-term fatigue loads. Its architecture can be customised to specific end-use applications to meet market requirements for longer blades both on-shore and off-shore, and in low-wind areas. Ultrablade G3 fabric displays excellent mechanical properties when used in UD spar cap application. Ownes Corning says it can also help reduce overall blade mass by up to 5 percent. Combined with an operating FVF level of more than 57 percent, Ultrablade G3 UD fabric can help increase blade lengths by up to 20 percent for turbines operating in low-wind, on-shore areas.

According to Owens Corning, the patent-pending optimal construction of the new Ultrablade Triax fabric increases blade root laminate stiffness and strength providing a reduction of up to 17 percent of the load transferred to rotor blade root bolts, thereby substantially improving bolt fatigue life.

“Our new WindStrand and Ultrablade offerings provide weight-saving, tailored solutions that are helping designers and engineers conceive blades that are lighter and longer. Furthermore, they deliver improved aerodynamic performance with resistance to higher, long-term fatigue loads; Dr. Skinner added. “These features enable the production of wind turbines that increase power yield and reduce the cost of energy.






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