The environments in which equipment must often operate—oil, water,
ozone, corrosion, and temperature extremes—are as critical to
designing materials and assemblies that isolate shock and vibration
as factors such as space limitations, shock loading capability,
weight, radiation, and surface friction.
As a result of its interlocking loop construction—which couples
resiliency with high damping characteristics and nonlinear spring
rates—Metal Textiles knitted wire mesh offers unique properties for
absorbing shock and vibration. It also provides dramatically
improved performance in hostile environments. Each loop acts as a
small spring when subjected to compressive loads, and will
immediately resume 90% of its original shape when the load is
Knitted wire mesh, in a compressed form, can handle shock loadings
ashigh as the yield strength of the material itself. In fact, it is
not uncommonfor a one-inch-thick disc to absorb up to 100,000
pounds of loading—a levelnot obtainable with any other fabricated
material. Loadings may be in anydirection. Knitted wire mesh is
also versatile: additional resilience, as well asreduction of
surface friction, can be obtained by knitting plastic fiber
inparallel with metal, in which case the metal wire acts as a
structural supportand binder for the plastic.
Proven performance in shock and vibration damping
Knitted mesh has a distinct advantage in its ability to withstand
hostileenvironments over other materials such as rubber, plastic,
cork, and felt. Byproper selection of the material or combination
of materials, it is possible to provide vibration or shock control
in corrosive atmospheres or at ultrahigh orcryogenic temperatures,
as well as radioactive, dirty, oily, and other extremeconditions.
Knitted mesh also offers other environmental advantages. Since the
knitcontracts within itself to take up the expansion of the metal,
the coefficientof thermal expansion is not a factor—the resiliency
of the knit allows forexpansion and contraction without the
subsequent danger of the supportseparating from, or pinching, the
equipment it protects.
Knitted Wire Mesh-Providing Extra Protection from Shock and
Vibration Damping in the World's Most Demanding Industrial
Not only does knitted wire mesh provide superior performance-with
an extra measure of protection against shock and vibration-but it
can be fabricated from any material that can be drawn into a wire
form. The most common knitted materials are stainless steel,
copper, aluminum, and Inconel.
An assortment of fibers, plastics, and other materials can also be
combined with metals to provide specific, desired damping or
environmental characteristics. In addition, bulk material may be
flattened, calendared, corrugated, wound, or compressed to enhance
its properties for specific applications. The density of the knit
may also be controlled from 10 to 70%-permitting constructions of
widely varying compression characteristics.
The versatility in selection of materials and their fabrication
make knitted wire mesh an ideal solution for an extremely wide
range of demanding industrial applications.
Metal Textiles knitted wire mesh products provide a number of
significant advantages over other shock and vibration damping
- Flexible support offers variations of alignment, flame resistance,
expansion and contraction, and corrosion control.
- Offers more durability with less effect from the environment.
- Wide range of materials can be used to control not only acoustical
properties, but aging processes.
- Isolation pads can withstand more weight and maintain its
resiliency without deterioration.
- Will reduce wear and tear on critical piping or delicate tubing on
aircraft, marine, or other transit equipment when used as clamps
- As bumper pads, can add extended life to pneumatic tube carriages,
plus reduce impact noise.
Applications for Metal Textiles knitted wire mesh include vibration
and shock control for:
- Engine mounts—cars, trucks, boats, recreationvehicles (camper
trailers), electricmotors, auxiliary motors, and aircraft
- Vibration pads—Machinery, floating slabsand pipes
- Mounts—Electronics, tubing, hydraulics, aircraft,
- Bumper pads—Pneumatic tube systems,coin machines for bank, ball
- Clamps—Tubing, tongs and furnace clamps (fingers)
- Exhaust Systems—Catalytic monolith supports
Challenge: In the early 1970s, the automotive industry needed a mechanical
support for the brittle ceramic honeycomb substrate used in exhaust