Wavy composite structures

Details Wavy composite structures Wavy composite structures

2011-03-15

2011-03-15

Tarazano, D. Lawrence (Department: 1786)

Stock material or miscellaneous articles

Hollow or container type article

Polymer or resin containing

C052S167800, C052S786100, C473S316000, C473S318000, C473S319000, C267S257000, C280S610000, C043S018500, C464S180000, C464S181000, C180S902000

Reexamination Certificate

active

07906191

ABSTRACT:
Construction and advantages of improved wavy composite structures made from wavy composite, unidirectional composites, and damping materials is revealed. By combining wavy composite laminae in various waveforms, offsets, angular orientations and material combinations, it is possible to provide axial, torsion, or shear properties equivalent to unidirectional materials but without the limitations related to fiber discontinuity, labor costs for fabrication, and weakness at seams where laminates overlap. By combining wavy composite layers with unidirectional crossplies, or by using woven mats with various fill fiber levels where the warp fibers are sinuously arranged, improved strength and damping is possible. Several examples of both wavy crossply laminates and unidirectional crossply laminates are analyzed and compared.

REFERENCES:
patent: 6048426 (2000-04-01), Pratt
patent: 6155932 (2000-12-01), Cabales et al.
patent: 6287664 (2001-09-01), Pratt

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