ASTM D1004 Test Guide: Tear Testing for Plastics
TearInspect your cutting die under magnification frequently; even microscopic nicks on the blade cause severe, low-biased tear outliers.
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Inspect your cutting die under magnification frequently; even microscopic nicks on the blade cause severe, low-biased tear outliers.
Align the pre-cut tongue lines perfectly parallel with the grip edges to ensure the tearing vector propagates straight down the…
Align the marked trapezoid boundary lines perfectly flush with the interior edges of both the upper and lower grip faces…
Ensure the 15mm starter slit is cut perfectly perpendicular to the specimen edge using a razor blade; any slant will…
Always verify the cutting die blades under magnification regularly; a single micro-nick on the blade face creates invalid, low-value specimen…
Draw a continuous chalk or ink reference line around the external perimeter of the clamping ring before testing to immediately…