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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The test specimens then should be assigned randomly in equal numbers to each laboratory for testing.

Although this test method is not recommended for acceptance testing, it is useful because it is used widely, especially outside the United States. Abrasion resistance is measured by subjecting the specimen to rubbing motion in the form of a geometric figure.

Link to Active This link will always route to the current Active version of the standard. Describe the material or product sampled and the method of sampling used. 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.

Observe and record the results after each batch of movements until you have Reached the desired number of movements total awtm Weigh one specimen to determine pre-test mass. Permanent abradants also may change due to pick up of finishing or other material from test fabrics and must accordingly be cleaned at frequent intervals. The resistance of textile materials to abrasion as measured on a testing machine in the laboratory is generally wstm one of several factors contributing to wear performance or durability as experienced in the actual use of the material.

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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. Screw the handle back on. 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.

Lifting the specimen holders out 3. Placing the cut specimen with the technical face down into the gold ring. With disposable abradants, the abradant is used only once or changed after limited use.

ASTM D – Test Method for Abrasion Resistance Martndale | Rycobel

The machine should already be programmed to run a batch of movements. Turn the power on. 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 material of the type ast question.

Fabrics of all types may be tested by this method but difficulties may arise with fabrics with a pile depth greater than 0. Add the required weight 9kpa for apparel, 12kPa for upholstery by resting the weights on the ends aztm the handles.

Starting the abrasion tester 1. How the Test Works: Put specimens back on the machine and continue with the test. There are three options for testing abrasion resistance included in this method. Remove the specimen holders from the Martindale tester by a. Preparation of Test Apparatus see manual 1.

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. Report the type of abradant and the mass of the weights used.

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Abrasion Resistance of Textile Fabrics Using Martindale

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. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard. This test method covers the determination of the abrasion resistance of textile fabrics.

Using the smallest cutting die, cut six circular specimens from the fabric to be tested with each specimen being 1. The face must sit flush and square inside the ring. 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.

The end point if reached for a woven when two or more yarns have broken, or for a knitted fabric when a hole appears.

ASTM D Test Method for Abrasion Resistance of Textile Fabrics

Standard Test Method f The end point is reached for a d49666 fabric when two or more yarns have broken, or for a knitted fabric when a hole appears. While “abrasion resistance” astn “durability” frequently are related, the relationship varies with different end uses, and different factors may be necessary in any calculation when trying to predict durability based on findings from specific abrasion tests.

Removing the silver covers held on by the black knobs.