Frontier Pro presented a new blade root repair method (patent pending) that revitalizes older turbines for which blade replacement is simply not feasible.
After extensive field testing, the Frontier Pro root repair solution provides quick payback (< 1 year) for turbine owners, delivery significant cost advantage both in terms of savings over replacement, as well as in terms of operational gains over turbine retirement. Older 7 ½ and 9 meter wind turbine blades are starting to experience failures at the root. These failures are caused by a poor load path from the blade to the bolt flange. Unidirectional fiberglass was bent at a 90 degree angle, wound around metal tubes, and returned to the root end of the blade. This right angle area is where flexing and failure have occurred. The solution is to add material outboard of the existing bolt flange to carry loads directly to the root end of the blade. The material can be placed directly on the blade, or the parts can be pre-molded so they can be quickly bonded to blades, even with the blades mounted on a turbine.
