ASTM D4966 PDF

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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Resistance to abrasion is evaluated by various means, including comparison to visual aids in the form of photographs or actual samples.

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

Preparation of Test Apparatus see manual 1. For the purposes of the Quality Assurance Class, you will be using Option 1. State that the specimens were tested as directed in Test Method D Historical Version s – view previous versions of standard.

Weigh one specimen to determine pre-test mass. Using the smallest cutting die, cut six circular specimens from the fabric to be tested with each specimen being 1. When using this equipment for scientific purposes, the fabric must be prepared according to ASTM D Report the type of abradant and the mass of the weights used.

Removing the silver covers held on by the black knobs. How the Test Works: With disposable abradants, the abradant is used only once or changed after limited use.

When cutting specimens, avoid wrinkles, folds or creases. Observe and record the results after each batch of movements until you have Reached the desired number of movements total of 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.

The machine should already be programmed to run a batch of movements. Place the assembled holders into the machine, replacing silver caps and black knobs. Push the green button to start the batch 3. Competent statistical assistance is recommended for the investigation of bias.

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Take care not to apply too much pressure on the cutting die as it will break the razor blades. Standard Test Method f Placing the cut specimen with the technical face down into the gold ring. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.

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. 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. 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.

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. Link to Active This link will always route to the current Active version of the standard. The end point if reached for a woven when two or more yarns have broken, or for a knitted fabric when a hole appears.

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. 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.

While “abrasion resistance” and “durability” frequently are related, the e4966 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. The face must sit flush and square inside the ring.

Avoid getting oil, water, grease, etc. Screw the handle back on.

ASTM D4966

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. This test method covers the determination of the abrasion resistance of textile fabrics.

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Set the counter system f4966 record the desired movements using the third black button from the right.

Lifting the specimen holders out 3. Agreement between laboratories conducting this test is poor, but it asstm used widely, especially outside the United States. 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.

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

Loosening and lifting off the c4966 knobs on top of the tester. Abrasion resistance is measured by subjecting the specimen to rubbing motion in the d496 of a geometric figure.

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

The abradant must be changed accordingly at frequent intervals or checked periodically against a standard. It is not surprising, therefore, zstm 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. Note that all three parts of the specimen holders handle, face, and ring are numbered and r4966 to numbers on top of the Martindale tester.

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.

Starting the abrasion tester 1.