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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This test method covers the determination of the abrasion resistance of textile fabrics. The abradant must be changed accordingly at frequent intervals or checked periodically against a standard. Describe the material or product sampled and the method of sampling used. The test specimens then should be assigned randomly in equal numbers to each laboratory for testing.

Removing the silver covers held on by the black knobs. For the purposes of the Quality Assurance Class, you will be using Option 1. 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.

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

The end point if reached for xstm woven when two or more yarns have broken, or for a knitted fabric when a hole appears.

ASTM D – Test Method for Abrasion Resistance Martndale | Rycobel

How the Dd4966 Works: Fabrics of all types may be tested by this method but difficulties may arise with fabrics with a pile depth greater than 0. 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.

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Historical Version s – view previous versions of standard. After the first batch is complete take specimen holders off of the machine and observe And record the results and changes in specimens.

Abrasion Resistance of Textile Fabrics Using Martindale

When using this equipment for scientific purposes, the fabric must be prepared according to ASTM D With disposable abradants, the abradant is used only once or changed after limited use. Fabrics of all types may be tested by this method, including woven, non-woven, and knit apparel fabrics, household asfm, industrial fabrics, and floor coverings, but difficulties may arise with fabrics with a pile depth greater than 2mm.

Turn the power on. Although this test method is not recommended for acceptance testing, it is useful because it is used widely, especially outside the United States. Referenced Documents purchase separately The documents listed below x4966 referenced within the subject standard but are not provided as part of the standard. 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. Competent statistical assistance is recommended for the investigation of 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.

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

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Standard Test Method f 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. The machine should already be programmed to run a batch of movements. 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.

ASTM D4966

Starting the abrasion tester 1. Add the required weight 9kpa for apparel, 12kPa for upholstery by resting the weights on the ends of the handles. Avoid getting oil, water, grease, etc. Placing the cut specimen with the technical face down into the gold ring. There are three options for testing abrasion resistance included in this method.

Resistance to abrasion is evaluated by various means, including comparison to visual aids in the form of photographs or actual samples. Abrasion resistance is measured by subjecting the specimen to rubbing motion in the form of a geometric figure. Set the counter system to record the desired movements using the third black button from the right.

ASTM D Test Method for Abrasion Resistance of Textile Fabrics

Report the type of abradant and the mass of the weights used. Preparation of Test Apparatus see manual 1.

State that the specimens were tested as directed in Test Method D