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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If the lot does not contain five units, additional rolls shall be selected from the lot to give a sample size of five rolls.
This standard is also available to be included in Standards Subscriptions. Precision and Bias Precision—Based on limited testing from one laboratory using integrator averages, the within-laboratory or repeatability ast deviation is about 0.
Position the clamps of the tensile tester so they are 1 6 1? Users of this standard are expressly advised that determination of the validity of any such patent rights, and the risk of infringement of such rights, are entirely their own responsibility. Now use a TestResources 4. In spite of the empirical nature of the reported values, it is believed they reflect comparative performance of similar touch fasteners tested and measured in the same way. This test measures the strength of the fastners for production control, atsm specifications and incoming raw material lot qualifications.
Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.
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.
ASTM D T Peel Strength of Hook and Loop Touch Velcro Fasteners
X5170 the case of a dispute arising from differences in reported atm results when using this test method for acceptance testing of commercial shipments, the purchaser and the supplier should conduct comparative tests to determine if there is a statistical bias between their laboratories.
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. Forces up to 10 kN 2, lbf Low force tabletop systems Modular series of five frame options with adjustable test space Affordable testing option for tension, compression, bend, peel and much more. Competent statistical assistance is recommended for the investigation of bias. Select a sample consisting of four contiguous specimens as described in 8.
Our engineers are familiar with the ASTM D test procedure and can guide you through the process and help you choose the best equipment.
Specimen Preparation Hook and loop material for this test shall be in the width asgm supplied, not to exceed 1 in. Current edition approved June 1, Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend.
A jagged line having multiple peaks will be produced. This is a means of determining the resistance to separation when forces are applied normal to the line of separation of the fastener. The integrator average is relatively easy to calculate given the proper equipment.
You may delete a document from your Alert Profile at any time. The highest peaks which reflect the force required to separate a hook and loop closure bear no simple relationship to the average force integrator average.
Calculate the average of the values from each of the five samples.
Generally, the integrator average will be lower r5170 the average of the five highest peaks. Standards Subscriptions from ANSI provides a money-saving, multi-user solution for accessing standards.
Remove the outer layer of each roll before selecting the required number of strips, hook and loop, 8 in. Gently separate approximately one inch of closure at the end to be placed into the clamps as indicated in Fig. Lay specimens flat with the functional side up so that the conditioning atmosphere has qstm access to them.
Preparing the Specimens
This will create two free ends to be inserted into the tensile tester. ASTM D indicates your choice of two different force calculations: If the product you are testing is wider, then cut satm inch wide strips from the middle using a TestResources Sample Cutter to minimize disruption of the hooks and loops in the product.
Xstm four specimens of hook and loop selected will be used to characterize the peel strength of adtm of the configurations. Carefully align and superimpose the hook strip over the loop strip so that the hook strip covers the loop strip, and the marked ends are matched as shown in Fig. 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 in no more than a two week period.
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G Series Mechanical Vice Grip. Calculate the average of the integrator values from the four closures representing the four directions.
ASTM D – 98 Standard Test Method for Peel Strength (T Method) of Hook and Loop Touch Fasteners
Calculate the average of the values from the four closures representing the four configurations. Your comments are invited either for revision of this standard or for additional axtm and should be addressed to ASTM International Headquarters.
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.