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 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 experienced in the actual use of the material.

When cutting specimens, avoid wrinkles, folds or creases. Set the counter system to record the desired movements using the third black button from axtm right.

Historical Version s – view previous versions of standard. 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.

The face must sit flush and square inside the ring. State that the specimens were tested as directed in Test Method D D966 the power on. 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.

ASTM D – Test Method for Abrasion Resistance Martndale | Rycobel

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. Observe and record the results after each batch of movements until you have Reached the desired number of movements total of There are three options for testing abrasion resistance included in this method.

With disposable abradants, the abradant is used only once or changed after limited use. Weigh one specimen to determine pre-test mass. Although this test method is not recommended for acceptance testing, it is useful because it is used widely, especially outside the United States. The machine should already be programmed to run a batch of movements.

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Assemble the holder by: Take care not to apply too much pressure on the cutting die as it will break the razor blades. Agreement between laboratories conducting this test is poor, but it is used widely, especially outside the United States. ashm

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 in question. Avoid getting oil, water, grease, etc. Make all tests in the standard atmosphere for testing.

The abradant must be changed accordingly at frequent intervals or checked periodically against a standard. Note that all three parts of the specimen holders handle, face, and ring are numbered and correspond to numbers on top of the Martindale tester. This test method covers the determination of the abrasion resistance of textile fabrics.

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.

Competent statistical assistance is recommended for the investigation of bias. Remove the specimen holders from the Martindale tester by a. For the purposes of the Quality Assurance Class, you will be using Option 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. Screw the handle back on. 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.

Using the smallest cutting die, cut six circular specimens from the fabric to be tested with each specimen being 1. Link to Active This link will always route to the current Active version of the standard. While “abrasion resistance” and “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.

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Placing the cut specimen with the technical face down into the gold ring. When using this equipment for scientific purposes, the fabric must be prepared according to ASTM D The test specimens then should be assigned randomly in equal numbers to each laboratory for testing. Report the type of abradant and the mass of the weights 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.

Put specimens back on the machine and continue with the test. 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. 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.

Preparation of Test Apparatus see manual 1. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.

ASTM D4966

Add the required weight 9kpa for apparel, 12kPa for upholstery by resting the weights on the ends of the handles. Describe the material or product sampled and the method of sampling used. After the first adtm is complete take specimen holders off of the machine and observe And record the results and changes in specimens. Abrasion resistance is measured by subjecting the specimen to rubbing motion in the form of a geometric figure.

How the Test Works: Lifting the specimen holders out 3. Starting the abrasion tester 1.