StrainPro: Strain Gage Measurements on Plastics and Composites
Not all composite material surfaces are created equal. Some composite surfaces are quite smooth and can be prepared for strain sensor bonding with minimal surface preparation.
In other cases, composite material surfaces can be quite rough. Sanding the surface to sufficient smoothness for your test will result in breaking fibers, which weakens the specimen and results in changing the properties of the specimen.
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