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FRP Composites
Properties
of FRP Composites
THe Unique Mechanical Properties of Fiber Reinforced
Polymers
by
Fiber
Reinforced Polymer (FRP) composites are used in a wide variety of applications.
Their
mechanical properties provide unique benefits to the product they are molded
into.
FRP
composite materials possess superior mechanical properties including:
· Impact
resistance
· Strength
· Stiffness
· Flexibility
· Ability
to carry loads
When
designing products out of FRP materials, engineers use sophisticated composite
material software which calculates the known properties of given the composite.
Typical
tests used to measure the mechanical properties of FRP composites include:
· Shear
stiffness
· Tensile
· Flexible
Modulus
· Impact
Components of FRP Composite Materials
The
two major components of an FRP composite material is resin and reinforcement.
A
cured thermosetting resin without any reinforcement is glass-like in nature and
appearance, but often very brittle.
By
adding a reinforcing fiber such as carbon fiber,
glass, or aramid, the properties are vastly improved.
Additionally,
with reinforcing fiber, a composite can have anisotropic properties. Meaning,
the composite can be engineered to have different properties in different
directions depending on the orientation of the fiber reinforcement.
Aluminum,
steel and other metals have isotropic properties, meaning, equal strength in
all directions.
A
composite material, with anisotropic properties, can have additional
reinforcement in the direction of stresses, and this can create more efficient
structures at lighter weights.
For
example, a pultruded rod having all fiberglass reinforcement
in the same parallel direction could have tensile strength upwards of 150,000
PSI.
Whereas
a rod with the same area of random chopped fiber would only have tensile
strength around 15,000 PSI.
Another
difference between FRP composites and metals is the reaction to impact.
When
metals receive impact, they can yield or dent. While FRP composites have no
yield point and will not dent.
Todd Johnson
· Regional
Sales Manager for Composites One, a distributor of composite materials.
· B.S.
in Business Management from University of Colorado Boulder's Leeds School
of Business
· Business
Development Manager for Ebert Composites Corporation
Experience
Todd Johnson
is a former writer for ThoughtCo, who wrote about plastics and composite
materials for 2-1/2 years between 2010 and 2013. He is a Regional Sales Manager
at Composites One, a composite materials distributor in San Diego, CA. Johnson
provides support to the Greater San Diego manufacturers of fiber reinforced and
polymer products. He regularly attends composite industry trade shows including
JEC, ACMA, SME, and SAMPE. In 2008 he presented at the Global Pultrusion
Conference in Baltimore, MD. Previously, Todd spent six years as the Business
Development Manager for Ebert Composites Corporation.
Education
B.S.,
Business, Management, Marketing, and Related Support Services - the University
of Colorado-Boulder's Leeds School of Business; attended Griffith University in
Queensland, Australia.
Todd Johnson
ThoughtCo and Dotdash
ThoughtCo is a
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