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The patent pending indentation yield
strength test developed by Nanovea in my mind is the greatest development
in mechanical testing since digital readouts.
Yield
strength determination no longer requires tensile machines and expensive
specimen preparation
The use of a cylindrical flat tip
penetrator's load per unit surface area, at increased speed, has been shown to
correlate to the load per surface area at which material starts flowing when in
tension. See the report
for the correlation studies on a variety of materials and details of the
calculation of Yield Strength.
The Nanovea technology can
determine the Yield Strength in less than a minute and in an area as small as 5
microns.
This gives smaller companies a
way to more afforably characterize materials without the expense of outside
lab services for sample prep and testing.
Two caveats:
- Because
this test covers a very small area, it truly characterizes the base
material itself, and not necessarily how it will behave in bulk form due
to casting, forging, voids or other imperfections.
- For
the same reason, test results from this technology may be slightly higher
than those by traditional tensile test / extensometer readings.
But the inverse of these
statements is probably more valid: the tensile test results will always be
less than the materials actual or ideal Yield Strength because its larger scale
includes a greater volume and selection of various internal imperfections and
macro defects.
We see this new Nanovea
Technology as an exciting development for our field that will give engineers,
product developers, and manufacturing companies better tools they can use to
characterize materials at scale of use.
We can also see this being used
by some bright engineers to determine Yield Strength of coatings! and films
being used in today's latest solar and fuel cell technologies.
For more information contact Nanovea.
Editor's Note: CR4 would like to thank Milo for submitting this blog entry, which originally appeared here.
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Re: Indentation Yield Strength Test - Breakthrough Mechanical Property Test
