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Physical Sciences Inc. (PSI) has been awarded a program from the Missile Defense Agency (MDA) to demonstrate a Direct Z-Pin Insertion (DZI) process for local application of 3D reinforcements in high temperature composite structures (2000F-4500F).

The DZI process inserts rigid composite pins normal (through thickness) to a 2D composite preform prior to cure. The pins act to improve both interlaminar tension and shear strength in the final composite structure.

Successful development of DZI to implement 3D reinforcements will enable hypersonic vehicles to endure higher shear loads with reduced risk of skin failure. Localized application of 3D reinforcements will reduce the risk of delamination failure on vehicle components with small radii of curvature, free panel edges body cut outs for window insertion or through holes for fastener insertion. The process can be used on both DoD vehicles as well as commercial space systems were ceramic composites are used.

For more information, contact:
Dr. John Steinbeck
Product Manager, Advanced Composites
steinbeck@psicorp.com
Physical Sciences Inc.
Telephone: (978) 689-0003