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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Avoid getting oil, water, grease, etc. Removing the silver covers held on by the black knobs. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.

E4966 the handle back on. The face must sit flush and square inside the ring.

ASTM D4966

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. Agreement between laboratories conducting this test is poor, but it is used widely, especially outside the United States.

Competent statistical assistance is recommended for the investigation of bias. Weigh one specimen to determine pre-test mass. 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.

Place the assembled holders into the machine, replacing silver caps and black knobs. 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.

Remove the specimen holders from the Martindale tester by a.

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. 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.

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. For the purposes of the Quality Assurance Class, you will be using Option 1.

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Fabrics of all types may be tested by this method but difficulties may arise with fabrics with a pile depth greater than 0.

State that the specimens were tested as directed in Test Method D Describe the material or product sampled and the method of sampling used. Placing the cut specimen with the technical face down into the gold ring. 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.

Although this test method is not recommended for acceptance testing, it is useful because it is used widely, especially outside the United States. Report the type of abradant and the mass of the weights used. Take care not to apply too much pressure on the cutting die as it will break the razor blades. When cutting specimens, avoid wrinkles, folds or creases.

Abrasion Resistance of Textile Fabrics Using Martindale

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

The test specimens then should be assigned randomly in equal numbers to each laboratory for testing. There are three options for testing abrasion resistance included in this method. 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 zstm.

Preparation of Test Apparatus see manual 1. Put specimens back on the machine and continue with the test. 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.

When using this equipment for scientific purposes, the fabric must be prepared according to ASTM D Starting asmt abrasion tester 1.

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

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. With disposable abradants, the abradant is used only once or changed after limited use. Historical Version s – view previous versions of standard.

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Using the smallest cutting die, cut six circular specimens from the fabric to be tested with each specimen being 1. Loosening and lifting off the black knobs on top of the tester. Make all tests in the standard atmosphere for testing. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard. After the first batch is complete take specimen holders off of the machine and observe And record the results and changes in specimens.

Standard Test Method f The end point if reached for a woven when two or more yarns have broken, or for a knitted fabric when a hole appears. The between-laboratory precision of this test method is poor and, because awtm 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 satm.

The machine should already be programmed to run a batch of movements. Link to Active This link will always route to the current Active version of the 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 2mm.

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. Observe and record the results after each batch of movements until you have Reached the desired number of movements total of Turn the power on.