Fabrication method for cores of structural sandwich materials including star shaped core cells

Patent · Wed Jan 01 00:00:00 EST 1997

OSTI ID:871048

Christensen, Richard M ^[1]

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1. Danville, CA

A method for fabricating structural sandwich materials having a core pattern which utilizes star and non-star shaped cells. The sheets of material are bonded together or a single folded sheet is used, and bonded or welded at specific locations, into a flat configuration, and are then mechanically pulled or expanded normal to the plane of the sheets which expand to form the cells. This method can be utilized to fabricate other geometric cell arrangements than the star/non-star shaped cells. Four sheets of material (either a pair of bonded sheets or a single folded sheet) are bonded so as to define an area therebetween, which forms the star shaped cell when expanded.

• Research Organization: Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
• DOE Contract Number: W-7405-ENG-48
• Assignee: Regents of University of California (Oakland, CA)
• Patent Number(s): US 5647933
• Application Number: 08/448749
• OSTI ID: 871048
• Country of Publication: United States
• Language: English

Related Subjects

fabrication
method
cores
structural
sandwich
materials
including
star
shaped
core
cells
fabricating
pattern
utilizes
non-star
sheets
material
bonded
single
folded
sheet
welded
specific
locations
flat
configuration
mechanically
pulled
expanded
normal
plane
expand
form
utilized
fabricate
geometric
cell
arrangements
pair
define
therebetween
forms
shaped cells
flat configuration
fabrication method
materials including
sandwich materials
structural sandwich
star shaped
cell arrangement
shaped cell
bonded sheet
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