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Title: Enhanced composites via selective interfacial modification

Patent ·
OSTI ID:1859961

A laminate comprising a first ply, a second ply, and a third ply which sandwiching the second ply between the first ply and the third ply. The laminate further includes a first plurality of interfacial modifiers arranged between opposing faces of the first ply and the second ply. The first plurality of interfacial modifiers are arranged in a first pattern. The laminate includes a second plurality of interfacial modifiers arranged between opposing faces of the second ply and the third ply such that the first plurality of interfacial modifiers and the second plurality of interfacial modifiers are arranged on opposite faces of the second ply. The second plurality of interfacial modifiers are arranged in a second pattern. The first pattern and the second pattern are configured to increase crack growth resistance of the laminate by selectively toughening portions of the laminate to control propagation of interfacial cracks within the laminate.

Research Organization:
Sandia National Lab. (SNL-CA), Livermore, CA (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA)
DOE Contract Number:
NA0003525
Assignee:
National Technology & Engineering Solutions of Sandia, LLC (Albuquerque, NM)
Patent Number(s):
11,148,392
Application Number:
16/352,004
OSTI ID:
1859961
Resource Relation:
Patent File Date: 03/13/2019
Country of Publication:
United States
Language:
English

References (6)

Fabrication of patterned thermoplastic microphases between composite plies by inkjet printing journal May 2014
Multi-Component Films patent-application October 2018
Mode II interfacial toughening through discontinuous interleaves for damage suppression and control journal January 2012
Mode I interfacial toughening through discontinuous interleaves for damage suppression and control journal January 2012
Cross reinforcement in a graphite-epoxy laminate patent September 1982
Numerical Assessment of Impact Behavior of Composite Laminates with Variable Interply Delamination Strength journal January 2014

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