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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Ensure specimens are free of folds, creases, or wrinkles. When equipped, be careful not to disturb the position of the pointer.
The distance between the axis and the top edges of the clamping jaws is 0. Each capacity scale requires its asstm calibrated mass. Avoid getting oil, water, grease, etc.
Within this limitation, Test Method D has no known bias. Visually check the alignment of the clamps. Work Item s – proposed revisions of this standard. For most fabrics this time period will be about 1 h.
The clamping surface in each jaw is at least 25 mm 1. The calibrated mass shall be constructed such that the mass can be xstm in the clamps in the same manner as used for a fabric specimen. Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM International Headquarters. Replace the knife when it no longer can be adjusted to the gage, or optionally. NOTE 3—The reading obtained is directly proportional to the length qstm the material torn, therefore, it is essential that the specimen be prepared to the exact size speci?
Ensure the black sensing strip on the pendulum is clean of? Statistical assistance is recommended for the investigation of bias. The direction of orientation of the fabric should be noted in the test report. Ensure the gage is positioned with the wide dimension upwards and the projection 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. The test specimens should then be randomly assigned in equal numbers to each laboratory for testing.
Align, if necessary, by turning the leveling thumb screw at the left end of the tester base. In any event, do not asmt the level of the instrument to adjust the zero.
Thickness micron testing equipment with Resolution asm. Apply a small amount of silicone grease to the air clamp plunger rods. Record values as read from the direct reading scale to the nearest mN gf. Instructions are d1442 for testing specimens with, or without, wetting.
Vacuum Leak Tester for bottles for food, chemical and pharmaceutical applications. As a minimum, the two parties should take a group of test specimens that are as homogeneous as possible and that are from a lot of fabric of the type in question.
ASTM D Tearing Strength of Fabrics by Falling-Pendulum Type (Elmendorf) Apparatus
WAFT direction is perpendicular to the orientation of the weaving machine. We offer machines, apparatus, testers, tensile grips, test fixtures, clamps, holders, jigs, faces, jaws, extensometers, d14244 and humidity chambers, furnaces, baths and custom solutions for unique applications. Perform the test within 2 min after removal of the specimen from the water.
Adjust the knife position such that the highest point of the blade just touches the bottom edge of the gage ashm then secure d144 in place. These dies can be made to order by most die manufacturers. If a bias is found, either its cause must be found and corrected or the purchaser and the supplier must agree to interpret future test results with consideration to the known bias. COF Inclined Plane Tester Measure the static coefficient of friction of various materials using a variable inclined plane and a sliding block.
With both clamps in the open position, gently pull the pendulum out until the jaw spacer gage will?
ASTM D1424 Tearing Strength of Fabrics by Falling-Pendulum Type (Elmendorf) Apparatus
Do not change the level to adjust the zero. Torn d1442 and other clothing is a very popular style today. Movement of the instrument during the swinging of the pendulum is a signi? Do not oil the? If zero is not registered, adjust the pointer stop until the zero reading is obtained.
Larger differences are likely to occur under all other circumstances. Labthink provides COF Tester for coef.
The last approved version of this historical standard is referenced on www. The fabric specimen is With the jaw spacer in place, tighten the shoulder head screw on the pendulum support. In the absence of such an agreement, take the number of fabric rolls or pieces speci?
Have a question about conducting the test for this standard? Verify this by holding down the pendulum stop and allowing the pendulum to swing free. The test specimens should then be randomly assigned in equal numbers to each laboratory for testing. The pointer, or when equipped, the digital readout should read The falling pendulum propagates this pre-notch to a complete tear through the center of the fabric specimen. FT-F1 Fogging tester to to test for fogging on upholstery material and time frame for testing.
This precaution is most important when testing bowed fabrics.