ASTM D4966 PDFASTM 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.

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

State the average number of movements required to rupture two or more yarns in a woven fabric or develop a hole d466 a knitted fabric. When using this equipment for scientific purposes, the fabric must be prepared according to ASTM D Although this test method is not recommended for asttm testing, it is useful because it is used widely, especially outside the United States.

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.

Fabrics of all types may be tested by this method but difficulties may arise with fabrics with a pile depth greater than 0. Push the green button to start the batch 3.

While “abrasion resistance” and “durability” frequently are related, the relationship varies with different end uses, and different factors may be necessary in x4966 calculation when trying to predict durability based on findings from specific abrasion tests.

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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. With disposable abradants, the abradant is used only once or changed after limited use.

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.

When cutting specimens, avoid wrinkles, folds or creases.

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. There are three options for testing abrasion resistance included in this method. Competent statistical assistance is recommended for the investigation of bias. The end point is reached for a woven fabric when two d496 more yarns have broken, or for a knitted fabric when a hole appears.

ASTM D – Test Method for Abrasion Resistance Martndale | Rycobel

Assemble the holder by: State that the specimens were tested as directed in Test Method D 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.

Remove the specimen holders from the Martindale tester by a. 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.

Link to Active This 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. 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.

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Avoid getting oil, water, grease, etc. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.

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

Take care not to apply too much pressure on the cutting die as it will break the razor blades. Historical Version s – view previous versions of 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.

Set the counter system to record the desired movements d9466 the third black button from the right. The machine should already be programmed to ast a batch of movements.

Abrasion Resistance of Textile Fabrics Using Martindale

Removing the silver covers held on by the black knobs. The abradant must be changed accordingly at frequent intervals or checked periodically against a standard. Make all tests in the standard atmosphere for testing. Screw the handle back on. Abrasion resistance is measured by subjecting the specimen to rubbing motion in the form of a geometric figure.