Designation: D – 98 (Reapproved ) Standard Test Method for Peel Strength (“T” Method) of Hook and Loop Touch Fasteners1 This. ASTM D Standard Test Method for Peel Strength (“T” Method) of Hook and Loop Touch Fasteners. ASTM D – Peel Strength (T Method) of. Hook and Loop Touch Fasteners. Scope: This test measures the peel strength of 2 strips of Hook and Loop material .
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Preparing the Specimens
It shall be expressed in linear units of 10 yards m. Lot—A lot shall consist of all the material of the same type, color and width, made at the same time from the same materials d5710 no more than a two week period. The average of the five highest peaks better reflect performance but the integrator results may be used to characterize a closure and for quality control purposes.
For faster testing results we offer our G Pneumatic Grips. Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend. These types pneumatic grips are also helpful in getting the specimen well-aligned in the grips due to the foot activator giving you both hands free asmt hold the specimen.
The plate will weigh 4 pounds, so you do not need to press down, just place the plate on top of the specimens for 2 seconds and remove. This standard is also available to be included in Standards Subscriptions.
ASTM D T Peel Strength of Hook and Loop Touch Velcro Fasteners
If the lot does not contain five units, additional rolls shall be selected from f5170 lot to give a sample size of five rolls. Proceed to Checkout Continue Shopping. Your Alert Profile lists the documents that will be monitored.
It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of astmm limitations prior to use. If you feel that your comments have not received a fair hearing you should make your views known to the ASTM Committee on Standards, at the address shown below. Standards Subsctiption may be the perfect solution.
In spite of the empirical nature of the reported values, it is believed they reflect comparative astn of similar touch fasteners tested and measured in the same way.
Observe the chart paper produced by the autographic recorder. Precision and Bias Precision—Based on limited testing from one laboratory using integrator averages, the within-laboratory or repeatability standard deviation is about 0. Select from the four specimens of hook and loop, the first closure to be tested and referring to Fig. Calculate the average of the values from the four closures representing the four configurations.
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The weight of the roller including the handle is 11 6 1? Create four specimens, each with a different alignment of hooks and loops. After 2 s remove the plate. For ASTM D, we would configure a small capacity load cell 10 or 25 pound for this low force peel test. Competent statistical assistance is recommended for the investigation of bias. The integrator average is relatively easy to calculate given the proper equipment.
We offer machines, apparatus, testers, tensile grips, test fixtures, clamps, holders, jigs, faces, jaws, extensometers, environmental and humidity chambers, furnaces, baths and custom solutions for unique applications. Place a flat steel plate 8 in. Repeatability is dependent on the specific material being tested; some materials would be expected to be higher or lower than this. Please first asttm your email before subscribing to alerts. For specification purposes, the material under test must be mated with material supplied by the manufacturer of the material being tested.
Label each specimen with the type of alignment for later reference. The tests consists of four identical tests, each with a different hook and loop orientation. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. Prepare the fourth closure specimen as described in 8. These test methods are not equivalent. ASTM D is a standard test method to measure peel strength of hook and loop fastners often times referred to as Velcro.
Originally approved in Calculate the average of the values from each of the five samples. The test specimens should then be randomly assigned in equal numbers to each laboratory for testing.
It is not easy to hold the specimen exactly perpendicular in the grips while you are cranking a manual vice grip. This standard is subject to revision at any time by the responsible technical committee and must be reviewed every five years and if not revised, either reapproved or withdrawn.
Determine the highest peak value in each portion. This arrow is marked on the specimen on the leading end as it is unwound from the roll. Carefully align and superimpose the hook strip over the loop atsm so that the hook strip covers the loop strip, and the marked ends are matched as shown in D510.