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A detailed description of the metallographic preparation is required to ensure valid porosity measurements.
Since ASTM standards are copyrighted, you should obtain the document through official channels to ensure you have the most accurate and legally compliant copy.
1. ASTM International (Official Source) This is the best place to get the current version (E2109-14 or newer) or the historical withdrawn version (E2109-01). astm e2109-01 pdf
2. Techstreet / IHS Markit These are authorized resellers of technical standards. They often allow you to purchase just the single PDF standard.
3. University and Corporate Libraries If you are a student or work for a large engineering firm, your institution likely has a subscription to ASTM standards via a database like: A detailed description of the metallographic preparation is
ASTM E2109-01 provides a test method for determining the shear resistance (also called "creep resistance" or "holding power") of pressure-sensitive adhesive (PSA) articles — such as tapes, labels, films, and transfer adhesives — under a constant load applied parallel to the bonded surfaces.
The key output is time to failure (in minutes or hours) when the adhesive bond fails cohesively or adhesively under sustained shear stress. Mounting:
This method is essential for predicting long-term performance of PSAs in applications like: