Alcoa Inc.

Matthew D Garratt

Gary H Bray

Diana K Denzer

Patrick Ulysse

An extruded structural member having improved damage tolerance containing a base section (); a stiffening section having at least one pair of structural stiffeners (), the structural stiffeners integral with the base section () and projecting outwardly thereof; and at least one intra-stiffener () area positioned between the pair of structural stiffeners (), the intra-stiffener area () having a microstructure with intentionally increased amounts of fiber texture to reduce the rate of fatigue crack growth in the extruded structural member.

Growing community of inventors

Pittsburgh, PA, United States of America

Matthew D Garratt