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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For the purposes of the Quality Assurance Class, you will be using Option 1. Place the assembled holders into the machine, replacing silver caps and black knobs. Fabrics of all types may be tested by this method but difficulties may arise with fabrics with a pile depth greater satm 0.

ASTM D4966

Although this test method is not recommended for acceptance testing, it is useful because it is used widely, especially outside the United States.

Make all tests in the standard atmosphere for testing. The face must sit flush and square inside the ring. Describe the material or product sampled and the method of sampling used. 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.

Take care not to apply too much pressure on the cutting die as it will break the razor blades. Screw the handle back on.

The abradant must be changed accordingly at frequent intervals or checked periodically against a standard. 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 awtm. How the Test Works: The end e4966 is reached for a woven fabric when two or more yarns have broken, or for a knitted fabric zstm a hole appears.

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Preparation of Test Apparatus see manual 1. Competent statistical assistance is recommended for the investigation of bias. Resistance to abrasion is evaluated by various means, including comparison to visual aids in the form of photographs or actual samples. 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. This test method covers the determination of the abrasion resistance of textile fabrics.

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 axtm the testing is begun. Link to Active This link will always route to the current Active version of the standard.

ASTM D Test Method for Abrasion Resistance of Textile Fabrics

State that the specimens were tested as directed in Test Method Astk Report the type of abradant and the mass of the weights used. Placing the cut specimen with the technical face down into the gold ring.

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.

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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.

Assemble the holder by: There are three options for testing abrasion resistance included in this method. The test specimens then should be assigned randomly in equal numbers to each laboratory for testing. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.

Loosening and lifting off the black knobs on top of the tester. Push the green button to start the batch 3. Put specimens back on the machine and continue with the test. After the first batch is complete take specimen holders off of the machine and observe And record the results and changes in specimens. 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.

Lifting the specimen holders out 3. Abrasion resistance is measured by subjecting the specimen to rubbing motion in the form of a geometric figure.

Turn the power on.

Note that all three parts of the specimen holders handle, ast, and ring are numbered and correspond to numbers on top of the Martindale tester.