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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The abradant must be changed accordingly at frequent intervals or checked periodically against a standard.
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.
Describe the material or product sampled and the method of sampling used. With disposable abradants, the abradant is used only once or changed after limited use. The machine should already be programmed to run a batch of movements. The end point if reached for a woven when two or more yarns have broken, or for a knitted fabric when a hole appears.
Lifting the specimen holders out 3. 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.
Standard Test Method f The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered d966. Resistance to abrasion is evaluated by various asgm, including comparison to visual aids in the form of photographs or actual samples.
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.
Martindale Type Fabric Abrasion (Abrader) Tester for ASTM D, ISO and ISO Testing
Placing the cut specimen with the technical face down into the gold ring. It is the responsibility adtm the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. Push the green button to start the batch 3. Removing the silver covers held on by the black knobs.
Set the counter system to record the desired movements using the third black button from the right. When cutting specimens, avoid wrinkles, folds or creases.
Abrasion Resistance of Textile Fabrics Using Martindale
Observe and record the results after each batch of movements until you have Reached the desired number of movements total of Remove the specimen holders from the Martindale tester by a. Link to Active This link will always route to the current Active version of the standard. Take care not to apply too much pressure on the cutting die as it will break the razor blades. When using this equipment for scientific purposes, the fabric must be prepared according to ASTM D 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.
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. How the Test Works: Place the assembled holders into the machine, replacing silver caps and black knobs. After the first batch is complete take specimen holders off of the machine and observe And record the results and changes in specimens.
Make all tests in the standard atmosphere for testing. For the purposes of the Quality Assurance Class, you will be using Option 1. 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. 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.
The face must sit flush and square inside the ring. 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 The test specimens then should be assigned randomly in equal numbers to each laboratory for testing. Turn the power sstm. With d49966 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.
There are three options for testing abrasion resistance included in this method. Competent statistical assistance is recommended for the investigation of bias. Avoid getting oil, water, grease, etc. Add the required weight 9kpa for apparel, 12kPa for upholstery by resting the weights on the ends of the handles. As a minimum, the two parties should take a group of d49666 specimens that are as homogeneous as possible and that are from a lot of material of the type in question.