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Depending upon the characteristics of the specimen, it may also be informative to report the average peeling force over the width of the seal as it separates, discarding the first and last part of the force Vs displacement curve Test apparatus Tensile tester with grips and suitable range loadcell.
This may be a vertical testing stand, or alternatively a horizontally oriented instrumen Preparation Cut a sufficient quantity of strips from a representative sample to a width of 15 mm, 25 mm or Cut strips from the sample to the dimensions defined in the standard.
Clamp the ends of the sample strip into the jaws of the tensile tester with the seal perpendicular to the direction of movement, and equidistant between the fixed and moving jaws.
If required, support the tail of the test specimen see the standard for an explanation. Record the tensile force and displacement as the seal is peeled apart. Report Record all details necessary to identify the sample including width and machine direction in relation to the direction of pull.
Report the speed of separation used by the tensile tester, and the method used to support the tail of the sample if appropriate. Report the maximum tensile force in newtons encountered as the specimen is stressed to failure.
This can also be expressed as force per unit width of the seal in newtons per metre. Note the method of failure of the seal. Request a call back from one of our Technical Sales Engineers now.
Download: ASTM F88.pdf