This standard is issued under the fixed designation D ; the number 1 This test method is under the jurisdiction of ASTM Committee D on Textiles. Jan 1, Buy ASTM D R TEST METHOD FOR TEARING STRENGTH OF FABRICS BY FALLING-PENDULUM (ELMENDORF-TYPE). The ASTM D Elmendorf based tear test is the most popular test for measuring the tearing strength of most fabrics. The Elmendorf test testing machine uses.
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For example, at grams of the gram scale. This standard is subject to revision at any time by the responsible technical committee and must be awtm every? WARP direction of the fabric is in line with the weaving machine.
Reassemble and check pointer friction. Discontinued January and reinstated as D — Ensure the black sensing strip on the pendulum is clean of? Do d1442 oil the? COF Inclined Plane Tester Measure the static coefficient of friction of various materials using a variable inclined plane and a sliding block.
Comparative tests as directed in 5. The Elmendorf test testing machine uses a falling pendulum to tear a fabric specimen.
ASTM D Tearing Strength of Fabrics by Falling-Pendulum (Elmendorf-Type) Apparatus_百度文库
Each capacity scale requires its own calibrated mass. Work Item s – proposed revisions of this standard. Ensure the mirrored divisions of the scale are clean and free of any foreign matter. For rolls of fabric, take a sample that will exclude fabric from the outer wrap v1424 the roll or the inner wrap around the core of the roll of fabric. Labthink RT rub tester to test on flexo printing.
ASTM D1424 Tearing Strength of Fabrics by Falling-Pendulum Type (Elmendorf) Apparatus
Instructions are provided for testing specimens with, or without, wetting. The clamping surface in each jaw is at least 25 mm 1.
Place the gage in the stationary specimen clamp in the usual manner for testing fabric. Four of the eight specimens were tested on one day and four specimens were tested on a second day. In the absence of other criteria, such as in a material speci? See Test Methods D and D Thickness micron testing equipment with Resolution 0. The components of variance for Elmendorf tear strength expressed as standard deviations were calculated to be the values listed in Table 3.
ASTM D Tearing Strength of Fabrics by Falling-Pendulum Type (Elmendorf) Apparatus
If the knife is dull it will produce astmm V-notch near the top of the cut and push the material outward. Recheck zero and readjust the pointer stop if necessary. Current edition approved Jan. If a smooth release cannot d4124 obtained by this adjustment the pendulum or the pendulum stop may require repair or replacement. Either die provides the basic rectangular test specimen 6 2 mm 4 6 0.
It measures the amount of energy required to perform the tearing operation by measuring the peak follow-through angle of the pendulum after the tearing action.
Comparative tests as directed in 5. With the jaw spacer in place, tighten the shoulder head screw on the pendulum support.
Larger differences are likely to occur under all other circumstances. NOTE 2—An adequate speci?
Gently push the pendulum in until the jaw spacer gage has just enough clearance to slide out the top of the clamps. See Test Adtm D and D The test specimens should then be randomly assigned in equal numbers to each laboratory for testing. Ensure the gage is positioned with the wide dimension upwards and the asym extending over the edge of the stationary clamp far enough such that the knife can be adjusted 6 to the bottom edge of the gage.