Patent ID: 6333092
Filing Date: 2001-12-25
Classification: B29C,B32B,Y10T

Abstract:
A composite structure comprising a first lamina and a second lamina, said first lamina having a first laminal surface which defines a first laminal fractal profile, said second lamina having a second laminal surface which defines a second laminal fractal profile which is complementary with respect to said first laminal fractal profile, said first laminal surface and said second laminal surface being complementarily joined so as to form an interfacial region which defines an interfacial fractal profile which is described by the engagement of said first laminal fractal profile and said second laminal fractal profile, said interfacial region being bounded by said first laminal surface and said second laminal surface, said interfacial fractal profile being bounded by said first laminal fractal profile and said second laminal fractal profile, said interfacial region being at least substantially characterized by longitudinal constancy of said interfacial fractal profile through said interface in an orthogonal direction with respect to an imaginary vertical plane which passes through said first laminal fractal profile, said second laminal fractal profile and said interfacial fractal profile, wherein:said first laminal surface describes an arrangement of first longitudinal elevations and first longitudinal depressions; said second laminal surface describes an arrangement of second longitudinal elevations and second longitudinal depressions; said first longitudinal elevations mate with said second longitudinal depressions;said second longitudinal elevations mate with said first longitudinal depressions;said longitudinal constancy is manifested by said first longitudinal elevations, said first longitudinal depressions, said second longitudinal elevations and said second longitudinal depressions;said first lamina includes a first resin and a plurality of first unidirectional fibers which are disposed in said first resin in an orthogonal direction with respect to said imaginary vertical plane;said second lamina includes a second resin and a plurality of second unidirectional fibers which are disposed in said second resin in an orthogonal direction with respect to said imaginary vertical plane;some said first unidirectional fibers are disposed in said first longitudinal elevations; andsome said second unidirectional fibers are disposed in said second longitudinal elevations.