A wind blade spar cap for strengthening a wind blade including an
integral, unitary three-dimensional woven material having a first end and
a second end, corresponding to a root end of the blade and a tip end of
the blade, wherein the material tapers in width from the first to the
second end while maintaining a constant thickness and decreasing weight
therebetween, the cap being capable of being affixed to the blade for
providing increased strength with controlled variation in weight from the
root end to the tip end based upon the tapered width of the material
thereof. The present inventions also include the method of making the
wind blade spar cap and a wind blade including the wind blade spar cap.