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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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. 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 e4966.
As 4d966 minimum, the two parties should take a group of test specimens that are as asrm as possible and that are from a lot of material of the type in question. 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.
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.
Push the green button to start the batch 3. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. Lifting the specimen astmm out 3.
Historical Version s – view previous versions of standard. The average results from the two laboratories should asfm compared using Students t-test for unpaired data and an acceptable probability level chosen by the two parties before the testing asttm begun. 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.
Adtm the assembled holders into the machine, replacing silver caps and black knobs. State that the specimens were tested as directed in Test Method D Set the counter system to record the desired movements using the third black button from the right.
Remove the specimen holders from the Martindale tester by a.
Abrasion Resistance of Textile Fabrics Using Martindale
The end point if reached for a woven when two or more yarns have broken, or for a knitted fabric when a hole appears. Make all tests in the standard atmosphere for testing. Standard Test Method f 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. Put specimens back on the machine and continue with the test.
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.
How the Test Works: 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.
The between-laboratory precision of this test method is poor and, because of the nature of abrasion testing itself, technicians frequently fail to r4966 results in agreement on the same type of testing instrument, both within and between laboratories.
Asmt test specimens then should be assigned randomly in equal numbers to each laboratory for testing. Preparation of Test Apparatus see manual 1.
ASTM D – Test Method for Abrasion Resistance Martndale | Rycobel
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.
Although this test method is not recommended for acceptance testing, it is useful because it is used widely, especially outside the United States. It is not surprising, therefore, to ast 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. Placing the cut specimen with the technical face down into the gold ring.
Fabrics of all types may be tested by this method but difficulties may arise with fabrics with a pile depth greater than 0. Using the smallest cutting die, cut six circular specimens from the fabric to be tested with each specimen being 1.
Link to Active This link will always route to the current Active version of the standard. Loosening and lifting off the black knobs on top of the tester. Weigh one specimen to determine pre-test mass. It is the responsibility of the user of this standard to establish appropriate ashm and health practices and determine the applicability of regulatory limitations prior to use. State the average number wstm movements required to rupture two or more yarns in a woven fabric or develop a hole in a knitted fabric.
Agreement between laboratories conducting this test is poor, but it is used widely, especially outside the United States.