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Material Development & Testing Equipment
Here’s an overview of our material development and testing equipment:
- We utilize a Fourier Transform InfraRed
(FTIR) spectrometer to analyze material samples. The samples are
subjected to an infrared beam to produce a recordable spectrum that
can be used to identify and verify material ingredients.
- We also use a Thermogravimetric
Analyzer (TGA) on material samples. By fractionation (material separation)
at elevated temperatures, our TGA helps us determine the quantities
of ingredients in a given sample.
- The most commonly referenced physical property is material hardness
as expressed in either durometer points or International Rubber Hardness
Degrees (IRHD). We can conduct durometer tests per
ASTM D 2240 and IRHD tests per ASTM D 1415.
- Our Instron® tensile / compression
tester allows us to conduct in-house tensile tests per ASTM D 412.
Featuring a compression load cell, our tester also enables us to run
compression-deflection tests as described in ASTM D 575. Comparing
test results allows us to verify material consistency and to predict
material performance.
- We have six elevated temperature Blue
M® ovens. These are horizontal airflow convection ovens, and
they feature microprocessor-based controls. These ovens allow us to
anticipate material performance in high temperatures based on the results
of tests described in ASTM D 573. Our Blue M ovens also facilitate
compression set testing, and we have our own compression set test fixtures.
Because compression set can cause an elastomeric part (such as an O-ring)
to lose sealability, gauging compression set characteristics via tests
described in ASTM D 395 can be very helpful when selecting a material.
- We have a heating block manufactured
by Akron Rubber Development Laboratory (ARDL) that lets us conduct elevated
temperature fluid resistance tests as detailed in ASTM D 471. Fluid resistance
tests enable us to evaluate how well a material will withstand the potentially
degrading effects of fluids in simulated service conditions. We use a
fume hood for solvent capture during flammable fluid tests.
- We have two shaft seal endurance testers with
multiple variable controls that allow us to test the effectiveness of
seal designs. Our testers let us control test head temperature, shaft
speed and rotational direction, shaft-to-bore misalignment, dynamic runout,
and sump temperature, all with an eye toward simulating anticipated service
conditions. New designs can be evaluated and existing designs refined
based on the results of this testing.
- On the subject of shaft seal testing, we can also gauge radial
lip force using an electronic split-shaft tester.
As described in RMA Handbook OS-6, lip force tests are important because
they can help make sure that a shaft seal lip will not exert either too
much or too little force on the shaft.
- Our hydrostatic tester with chamber allows
us to run hose burst tests per ASTM D 380. Because they record the pressure
at which a hose sample ruptures, burst tests give a very clear indication
of a hose’s ability to withstand a given pressure situation. We
can also conduct coupling and outside diameter (O.D.) swell tests.
- Because some parts will be expected to function in extreme cold
or extreme heat (or, in some very severe applications, both), we employ
a Thermotron® environmental test
chamber to conduct high and low temperature tests. Our test chamber
can handle hot-cold cycling from -73° C to 177° C (-100° F
to 350° F).
- We use a Differential Scanning Calorimeter
(DSC) to verify the proper state of cure for a given part. Our
DSC also allows us to gauge the glass transition temperature (Tg) for
materials or compounds.