ASTM D1424 PDF
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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In any event, do not change the level of the instrument to adjust the zero. Discontinued January and reinstated as D — See Test Methods D and D Each capacity scale requires its own calibrated mass.
Analysis of the data was conducted using Practice D and Practice D Thickness micron testing equipment with Resolution 0. For most fabrics this time period will be about 1 h.
Larger differences are likely to occur under all other circumstances. MFY leak detector for our pouch packaging. Tensile Tester for both compression and tensile, with loads typically N. With both clamps in the open position, gently pull the pendulum out until the jaw spacer gage will? The direction of orientation of the fabric should be noted in the test report.
Ensure that the balance of the fabric remaining to be torn is 43 6 0. Replace the knife blade if necessary. It is the responsibility of the user zstm this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
The Elmendorf test testing machine uses a falling pendulum to tear a fabric specimen. Loosen the shoulder head screw on top of the pendulum support. If necessary, adjust d144 height of the knife. NOTE 6—Some instruments may require different calculations than percentage of scale.
Labthink provides COF Tester for coef. The average results from the two laboratories should be compared using appropriate statistical analysis and an acceptable probability level chosen by the two parties before the testing began.
Apparatus is commercially available. The falling pendulum propagates this pre-notch to a complete tear through the center of the fabric specimen. The sstm should lie free with its upper area directed toward the pendulum to ensure a shearing action.
ASTM D Tearing Strength of Fabrics by Falling-Pendulum (Elmendorf-Type) Apparatus_百度文库
WARP direction of the fabric is in line with the weaving machine. The critical dimension of the test specimen is the distance The square roots of the components of variance are being reported to express the variability in the appropriate units of measure rather than as the squares of those units of measure.
If a smooth release cannot be obtained by this adjustment the pendulum or the pendulum stop may require repair or replacement. The clamping surface in each jaw is at least 25 mm 1.
ASTM D1424 Tearing Strength of Fabrics by Falling-Pendulum Type (Elmendorf) Apparatus
It is not suited for the course direction of warp knit fabrics or either direction of most other knitted wstm. It is pre-notched with a ashm The fabrics may be untreated, heavily sized, coated, resin-treated, or otherwise treated. Oxygen Permeability Tester to test containers. 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. Record values as read from the direct reading scale to the nearest mN gf.
FT-F1 Fogging tester to to test for fogging on upholstery material and time frame for testing. When equipped, set the pointer against its stop.