Below are the procedures and equipment for each testing standard required for testing adhesives
ASTM D903
Equipment:
Micrometers and/or callipers
Deflectometer/Deflection gages (ONLY if the UTM can’t measure the displacement)
Conditioning Chamber
Environmental Testing Chamber
3-point bend fixture
UTM
Procedures:
Prep the specimen.
Precondition the test specimen.
Test the specimen as soon as possible after conditioning
Place the specimen in the test apparatus
Wait until failure
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Variable
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Quantity
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Grip Separation
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About 1 Inch
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Stripping angle
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180 degrees.
ASTM D950
Equipment:
3 Force Indicator
Grips
Strain Indicating Device
Extensometer
Strain Gauge
Tabs( We should probably fabricate our own tabs)
UTM
Procedures:
Put the specimen in the jig that is in the vise of the machine so the specimen butts squarely against the end of the jig.
Rest the impact head against the specimen and adjust the jig so the head fits squarely against the impact face.
Raise the impact head and release the safety catch.
We will then note the impact energy absorbed.
ASTM D5868
Equipment:
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Compression fixture
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Strain-indicating device
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Special alignment jig
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Bonded Resistance Strain Gauges
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Emery cloth
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I believe UTM
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Conditioning chamber
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Environmental test chamber
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Note: Before performing the test, we will need to sand down the surface to ensure the adhesive sticks.
ASTM D5868
Test Specimen Requirements
Prepare a minimum of 5 lap shear samples in each case and test.
Equipment:
UTM
Procedures:
Apply the adhesive in accordance with the adhesive suppliers' recommendations.
Adhesive Cure—Cure the adhesive at room temperature or elevated temperature using prescribed conditions determined by the adhesive supplier.
Condition the test specimens
Place specimens in UTM
Wait for failure
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