ASTM D4157 PDF

Weight: g/Im. Product End Use: Upholstery. Identification. Tested For: Bente Ellingsoe, Quality Department. Key Test: ASTM D/ACT K. Gabriel A/S. ASTM DAbrasion Test by Oscillatory – Download as PDF File .pdf), Text File .txt) or read online. ASTM D* Wyzenbeek (Oscillatory Cylinder). The ASTM D is a test of the American Society of Testing and Materials. A Wyzenbeek machine is.

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Combining values from the two systems may result in nonconformance with the specification. ACT studies indicate that results of multiple abrasion tests performed on some woven fabric structures may vary significantly — as much as 60 percent or more. The test results from the two laboratories should be compared using a statistical test for unpaired data, at a probability level chosen prior to the testing series.

This is an oscillating test.

Make sure to asgm a new post from the Association of Contract Textiles regarding acceptable abrasion standards. There is no correlation between Wyzenbeek and Martindale results.

ASTM D – 08() Standard Guide for Abrasion Resistance of Textile Fabrics (Uniform Abrasion)

Specific instances have been described. 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.

Experience has shown in many instances, that relative results obtained with this instrument when used on a series of fabrics, agreed with those obtained based upon performance in end use. If bias is found, either its cause must be found and corrected, or future test d457 must be adjusted in consideration of the known bias.

In fact, Wyzenbeek results abovedouble rubs have not been shown to be an indicator of increased fabric satm. Option 4—Breaking Strength Loss. Wyzenbeek testing measures flat abrasion resistance and does not consider edge abrasion or other types adtm surface wear that may occur in actual upholstered applications. Because there is a definite need for measuring the relative resistance to abrasion, this is one of the several standardized guides and methods that is useful to help minimize the inherent variation in results that may occur.

Wyzenbeek — New Test Video View: Whenever possible all materials that are to be compared with each other should be tested under the same pressure and tension. V4157 Version s – view previous versions of standard.

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For more information please refer to abrasion white papers on the ACT website. Number of cycles determines abrasion rating. Wyzenbeek results abovedouble rubs have not been d1457 to be an indicator of increased lifespan. Therefore, ACT does not recommend using absolute numbers for comparision. For survey details and additional research, read our White Papers. Within the text, the inch-pound units are shown in parentheses. My go to reference on the subject is the Association for Contract Textiles.

Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. As a minimum, the test samples should be used that are as homogenous as possible, that are drawn from the material from which the disparate test results were obtained, and that are randomly assigned in equal numbers to each laboratory for testing.

However, caution is advised because anomalous results may occur due to uncontrolled factors in manufacturing or other processes. The test results from the two laboratories should be compared using a statistical test for unpaired data, at a probability level chosen prior to the testing series.

With permanent abradants that use hardened metal or equivalent asmt, 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 aztm due to differences in usage.

Permanent abradants may also change due to pick up of finishing or other material from test fabrics and must accordingly be cleaned at frequent intervals. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.

This test method may not be usable for axtm fabric constructions.

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 d41157 resistance, and interpretation of results.

Accordingly, specifiers should consider the following qualifiers when assessing double rub ratings: With disposable abradants, the abradant is used only once or changed after limited use. It is the responsibility of the user of this standard to establish appropriate safety, health and environmental practices and determine the applicability of regulatory limitations prior to use.

Understanding Abrasion Testing

A Wyzenbeek machine is used for this test allowing samples of the test fabric to be pulled tight in a frame and held stationary. A fabric with twice the number of abrasion cycles does not indicate double the service life.

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The results obtained from the use of this instrument assist in evaluating these factors relative to the wear serviceability of the final textile product in specific end uses. Studies have shown that Wyzenbeek test results on the same fabric can and do vary significantly from test to test. ACT reminds you that there are many points to consider when specifying textiles.

Fabrics of all types including carpets, garments and nonwovens may be tested under this method. The resistance to abrasion is affected by many factors, such as the inherent mechanical properties of the fibers; the dimensions of the fibers; the structure of the yarns; the construction of the fabrics; and the type, kind, and amount of finishing material added to the fibers, yarns, or fabric.

This test method provides a comparative measurement of the resistance of woven textile fabrics to abrasion, and may not necessarily predict the actual performance of fabrics in actual use. Link to Active This link will always route to the current Active version of asm standard. Link to Active This link will always route to the current Active version of the standard.

Other procedures for measuring the abrasion resistance of textile fabrics are given in: S4157 tests may be reliable as an indication of relative end-use performance in cases where the difference in abrasion resistance of various materials is large, but they sstm not be relied upon where differences in laboratory test findings are small. All of the following issues should be included in any such assessment: The measurement of the relative amount of abrasion may asmt be affected by the method of evaluation and may be influenced by the judgment of the operator.

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. For example, a predetermined number of abrasion cycles at specified test conditions may be performed on a series of specimens, which are then subjected to a strength or barrier performance test.

Historical Version s – view previous versions of standard.