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NEB's
Composite Team utilizes
the high strength and light
weight of high modulus materials
such as carbon, Kevlar, Nomex,
and a variety of structural
foam cores
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Deckhouse
structures of structural
foam, epoxy, and high-modulus
fibers offer zero maintenance
and aesthetic curves
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NEB's
component
composites
oven is utilized to cure parts
built of pre-preg carbon or
Kevlar
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After
New York City's
beloved
66-foot tall clocktower suffered
three disastrous fires, in 1999
Mayor Rudolph Guiliani asked
NEB for a fireproof replica.
Using aerospace-grade phenolic
resin and a specially-built
composites oven to post-cure
the structure, NEB's Composites
Team constructed the clocktower
in six interlocking sections.
The new tower fit and was erected
in a mere 24 hours. New Yorkers
loved it.
NEB
goes to law school.
When Quinnipac College Law School
needed several 5-foot-diameter
turrets and a 20-foot diameter
dome to grace their main building
in Connecticut, they turned
to NEB's Composites Team. The
pieces were built using fireproof
phenolic resin and balsa core.
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Composite
Structures
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Elegant
Solutions
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Carbon
& Glass
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The
reason why boats and structures
built of NEB's high tech
construction
are successful isn't because
of our high tech materials
-- it's that fact that our
builders are experienced
and
skilled. "We have a
high comfort level with
advanced composite process
technologies," says
Composites department head
Donald Watson. "We
know how to work with cores,
such as Nomex and aluminum
honeycomb, PVC and SAN foam,
and balsa core, and with
fibers from Kevlar to carbon
to all grades of fiberglass.
And we've developed our
own processes, whether we
are vacuum-bagging or using
wet layup, pre-preg, vacuum-bagging,
heat-forming, or pressure-bladder
molding." Through careful
monitoring of the building
process and in-house testing
that includes destructive
panel testing and chemical
evaluation tests, as well
as working closely with
resin, fiber, and core suppliers,
NEB's Composites Team stays
ahead of the high-tech curve.
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At
NEB, fibers, resins, and
cores are engineering materials.
The compressive strength
of carbon fiber, for example,
is employed in load-bearing
components that require
stiffness and a high strength-to-weight
ratio. Fiberglass (E-glass,
S-glass, biaxial, and
unidirectional) is used
for less weight-sensitive
applications. A Kevlar/glass
combination is used to add
impact strength to laminates
(particularly in bow sections).
Cores are specified according
to design requirements for
a particular core material's
properties. For the America's
Cup racer Stars &
Stripes, for example,
we specifed an aircraft-grade
aluminum honeycomb core
for absolute minimun weight.
For a motoryacht's hull
and deck, a SAN-type foam
core offers structural toughness
with signigicant weight
savings. For racing yachts,
a PVC-type foam yields a
lightweight laminate with
panel stiffness that minimizes
the need for structural
members.
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NEB's
Composites Team is noted
for
making
a structure
or component part as light
and strong
as
possible for its intended
use. The process begins
with super-accurate tooling
and proceeds through to
meticulous fabrication,
resulting in a minimal need
for filler and fairing.
(In fact, our tooling, using
wood and epoxy to build
strong molds, is so accurate
that other builders depend
on us to build their hull
and deck plugs.) For pre-preg
structures of carbon and
Kevlar, we have perfected
the science of heat-curing
the fiber/core laminate
in our composites ovens
(the large oven is 90 x
25 feet; the small oven
is 20 x 13 feet). We use
sensitive measuring equipment
implanted in the laminate
to monitor temperature levels
during the "ramp-up"
heating process and extended
curing time. To cure the
carbon pre-preg laminate
of the 80-foot maxiboat
Sagamore, for instance,
the entire structure was
"baked" at 80
degrees Centigrade for a
full 12 hours. Our vacuum-bagging
techniques (we utilize three
vacuum pumps) are just as
carefully executed to attain
a complete chemical and
mechanical bond to form
a one-part structure. In
addition to custom carbon
components such as rudderposts,
rudder blades, and steering
quadrants, the NEB Composites
Team has fabricated everything
from pods for Woods Hole
Oceanographic remote-controlled
undersea research vehicles
to lighting fixtures and
architectural structures.
If if needs to be light,
strong, and tough, we can
do it! For more information
on Composites and New Construction,
contact Donald Watson at
401-683-4000 or information@neboatworks.com |
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