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US 11,400,685 B2Granted
Gradually recruited fiber reinforced polymer (FRP) composite
AssigneeUNM Rainforest Innovations
InventorsEslam Mohamed Soliman, Mahmoud Reda Taha
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Abstract
A 3D printed fiber reinforced polymer composite having a nonlinear stress-strain profile created by a central layer and a plurality of recruited successive layers.
Claims12
A fiber reinforced polymer composite comprising:
- a central layer and a plurality of successive layers containing a plurality of fibers;
- and said plurality of successive layers are recruited to assist said central stiff layer to resist a load;
- said successive layers include a plurality of fibers, each of said fibers in a layer formed by a plurality of repeating segments, said repeating segments comprised of a plurality of legs connected at apexes to form a zigzag pattern, said apexes having a predetermined apex angle;
- said fibers in said central stiff layer are straight;
- said successive layers are arranged as layer pairs, said layers pairs form successive layers that are mirror images with respect to said central stiff layer;
- and
- said mirror image layer pairs have a first position wherein each layer pair has a first apex angle and transitions to a second position when a load is applied to said composite and during said transition, said apex angle in each layer pair increases until said fibers straighten.
4 more elements
Dependencies are inferred from the claim text.