Abstract: Systems and methods for protecting an aerodynamic structure, e.g., a wind turbine blade, rotor blade, aerodynamic aerostructure, etc., are provided. Long fiber reinforced composites having a helicoidal architecture with material aligned with a graded hardness and stiffness are used to develop an efficient and highly tailorable leading edge protection (LEP) solution with longer durability than conventional solutions while yielding lighter, and optionally, more environmentally sustainable solutions. At least a portion of the plurality of plies are helicoidally arranged relative to one another to tailor stress wave propagation speed of the aerodynamic blade and to provide load carrying strength for the aerodynamic blade.

Abstract: Systems and methods for protecting an aerodynamic structure, e.g., a wind turbine blade, rotor blade, aerodynamic aerostructure, etc., are provided. Long fiber reinforced composites having a helicoidal architecture with material aligned with a graded hardness and stiffness are used to develop an efficient and highly tailorable leading edge protection (LEP) solution with longer durability than conventional solutions while yielding lighter, and optionally, more environmentally sustainable solutions. At least a portion of the plurality of plies are helicoidally arranged relative to one another to tailor stress wave propagation speed of the aerodynamic blade and to provide load carrying strength for the aerodynamic blade.

Abstract: A brace including at least a first and second anchor regions; and a mechanical metamaterial region between the first anchor region and the second anchor region. The mechanical metamaterial region including a mesh structure having a two-stage elastic deformation profile, including a first stage which crossover to a second stage at a predetermined strain threshold along a main tension direction. The first stage of the elastic deformation profile may be of a higher compliance than the second stage of the elastic deformation profile.

Abstract: An aquatic gliding board, or float, which includes a core covered with an outer casing forming a deck and a hull thereof. The outer-casing includes at least one deck portion and one hull portion, at least the deck portion of the casing having a sandwich structure which includes at least one low-density core between two thinner layers having high mechanical characteristics including layers of resin-impregnated fibers, with the low-density core of the sandwich structure of the casing of the deck portion including a flexible and elastic cellular material.

Abstract: A skateboard deck of the type having a plurality of layers including an upper surface layer on which the skater takes position, a lower surface layer in the vicinity of which the wheels of the skateboard are positioned, and one or several intermediate layers, the deck further including a reinforcement arranged in at least one of the following zones: at the front of the deck, in the area where the front wheels are fixed, at the rear in the area where the rear wheels are fixed, on the periphery of the deck, with the reinforcement being inserted between the upper surface layer and the lower surface layer. The reinforcement also includes a projecting portion extending through the lower surface layer of the deck.

Abstract: A skateboard deck of the type having a plurality of layers including an upper surface layer on which the skater takes position, a lower surface layer in the vicinity of which the wheels of the skateboard are positioned, and one or several intermediate layers, the deck further including a reinforcement arranged in at least one of the following zones: at the front of the deck, in the area where the front wheels are fixed, at the rear in the area where the rear wheels are fixed, on the periphery of the deck, with the reinforcement being inserted between the upper surface layer and the lower surface layer. The reinforcement also includes a projecting portion extending through the lower surface layer of the deck.