Title: Three-dimensionally patterned energy absorptive material and method of fabrication

Abstract

A three-dimensionally patterned energy absorptive material and fabrication method having multiple layers of patterned filaments extrusion-formed from a curable pre-cursor material and stacked and cured in a three-dimensionally patterned architecture so that the energy absorptive material produced thereby has an engineered bulk property associated with the three-dimensionally patterned architecture.

Inventors:

Duoss, Eric; Frank, James M.; Kuntz, Joshua; Maxwell, Robert S.; Metz, Thomas R.; Spadaccini, Christopher; Wilson, Thomas S.

Issue Date:

Tue May 08 00:00:00 EDT 2018

Research Org.:

Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)

Sponsoring Org.:

USDOE

OSTI Identifier:

1440537

Patent Number(s):

9962905

Application Number:

13/905,056

Assignee:

Lawrence Livermore National Security, LLC (Livermore, CA

Patent Classifications (CPCs):

B - PERFORMING OPERATIONS B29 - WORKING OF PLASTICS B29C - SHAPING OR JOINING OF PLASTICS

B - PERFORMING OPERATIONS B32 - LAYERED PRODUCTS B32B - LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM

Show more

B - PERFORMING OPERATIONS B29 - WORKING OF PLASTICS B29C - SHAPING OR JOINING OF PLASTICS

B29C64/118 - using filamentary material being melted, e.g. fused deposition modelling [FDM]
B29C67/20 - for porous or cellular articles, e.g. of foam plastics, coarse-pored {

B - PERFORMING OPERATIONS B32 - LAYERED PRODUCTS B32B - LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM

B32B2266/06 - Open cell foam
B32B2266/08 - Closed cell foam
B32B2307/56 - Damping, energy absorption
B32B37/153 - {at least one layer is extruded and immediatly laminated while in semi-molten state}
B32B5/12 - characterised by the relative arrangement of fibres or filaments of {different layers, e.g. the fibres or filaments being parallel or perpendicular to each other}
B32B5/18 - characterised by features of a layer {of} foamed material
B32B5/245 - {another layer next to it being a foam layer}
B32B5/26 - another layer {next to it also being fibrous or filamentary
B32B7/04 - Interconnection of layers

Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC Y10T - TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

Y10T428/24628 - Nonplanar uniform thickness material
Y10T428/24744 - Longitudinal or transverse tubular cavity or cell
Y10T428/24851 - Intermediate layer is discontinuous or differential

Show less

DOE Contract Number:  

AC52-07NA27344

Resource Type:

Patent

Resource Relation:

Patent File Date: 2013 May 29

Country of Publication:

United States

Language:

English

Subject:

36 MATERIALS SCIENCE