ASTM D4966 PDF

Abrasion Resistance by the Martindale Method. ASTM D Standard Test Method for Abrasion Resistance of Textile Fabrics (Martindale. Abrasion Tester. ASTM D Standard Test Method for Abrasion Resistance of Textile Fabrics ( Martindale Abrasion Tester Method). Products. MARTINDALE ABRASION AND. ASTM D(). Standard Test Method for Abrasion Resistance of Textile Fabrics (Martindale Abrasion Tester Method). standard by.

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When cutting specimens, d496 wrinkles, folds or creases. Competent statistical assistance is recommended for the investigation of bias. Screw the handle back on. This test method covers the determination of the abrasion resistance of textile fabrics. Preparation of Test Apparatus see manual 1. Turn the power on. Make all tests in the standard atmosphere for testing.

Martindale Type Fabric Abrasion (Abrader) Tester for ASTM D, ISO and ISO Testing

The measurement of the relative amount of abrasion also may be affected by the method of evaluation and may be influenced by the judgment of the operator. State that the specimens were tested as directed in Test Method D The machine should already be programmed to run a batch of movements.

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 ast, of the type in question. The end point is reached for a woven fabric when two or more yarns have broken, or for a knitted fabric when a hole appears. Set the counter system to record the desired movements using the third black button from the right. Removing the silver covers held on by the black knobs.

Permanent abradants also may change due to pick up of finishing or other material from test fabrics and must accordingly be asym at frequent intervals. The abradant must be changed accordingly at frequent intervals or checked periodically against a standard. The face must sit flush and square inside the ring.

The average results from the two laboratories should be compared using Students t-test for unpaired data and an acceptable probability level chosen by the two parties before the testing is begun. Loosening and lifting off the black knobs on top of the tester.

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Put specimens back on the machine and continue with the test. With disposable abradants, the abradant is used only once or changed after limited use. Fabrics of all types may be tested by this method but difficulties may arise with fabrics with a pile depth greater than 0.

Link to Active D496 link will always route to the current Active version of the standard.

Placing the cut specimen with the technical face down into the gold ring. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. In general, they should not be relied upon for prediction of actual wear-life in specific-end uses unless there are data showing the specific relationship between laboratory abrasion tests and actual wear in the intended end-use.

Report the type of abradant and the mass of the weights used. Abrasion resistance is measured by subjecting the specimen to rubbing motion in the form of a geometric figure. Add the required weight 9kpa for apparel, 12kPa for upholstery by resting the weights on the ends of the handles. Starting the abrasion tester 1. Using the smallest cutting die, cut six circular specimens from the fabric to be tested with each specimen being 1.

The resistance of textile materials to abrasion as measured on a testing machine in the laboratory is generally only one of several factors contributing to wear performance or durability as 4d966 in the actual use of the material.

The end point if reached for a woven when two or more yarns have broken, or for a knitted fabric when a hole appears. With permanent abradants that use hardened metal or equivalent surfaces, it is assumed that the abradant will not change appreciably in a specific series of tests, but obviously similar abradants used in different laboratories will not likely change at the same rate due to differences in usage.

The test specimens then should be assigned randomly in equal asym to each laboratory for testing. Remove the specimen holders from the Martindale tester by a. Fabrics of all types may be tested by this method, including woven, non-woven, and knit apparel fabrics, household fabrics, industrial fabrics, and floor coverings, but difficulties may arise with fabrics with a pile depth greater than 2mm.

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Observe and record the results after each batch of movements until you have Reached the desired number of movements asrm of Agreement between laboratories conducting this test is poor, but it is used widely, especially outside the United States. State the average number of movements required to rupture two or more yarns in a woven fabric or develop a hole in a knitted fabric.

How the Test Works: It is the responsibility of the user of this standard to establish appropriate safety and health d49666 and determine the applicability of regulatory limitations prior to use.

ASTM D4966

The values given in parentheses are d966 conversions to SI units that are provided for information only and v4966 not awtm standard. Standard Test Method f Push the green button to start the batch 3. Lifting the specimen holders out 3. Resistance to abrasion is evaluated by various means, including comparison to visual aids in the form of photographs or actual samples. When using this equipment for scientific purposes, the fabric must be prepared according to ASTM D It is not surprising, therefore, to find that there are many different types of abrasion testing machines, abradants, testing conditions, testing procedures, methods of evaluation of abrasion resistance, and interpretation of results.

Historical Version s – view previous versions of standard. Avoid getting oil, water, grease, etc. The between-laboratory precision of this test method is poor and, because of the nature of abrasion testing itself, technicians frequently fail to obtain results in agreement on the same type of testing instrument, both within and between laboratories.

Describe the material or product sampled and aastm method of sampling used. 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 in light of the known bias.

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