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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Within the text, the inch-pound units are shown in parentheses. Number of cycles determines abrasion rating. ACT reminds you that there are many points to consider when specifying textiles.

However, caution is advised because anomalous results may occur due to uncontrolled factors in manufacturing or other processes. Studies have shown that Wyzenbeek test results on the same fabric can and d157 vary significantly from test to test. The abradant must accordingly be astj at frequent intervals or checked periodically against a standard. Fabric samples are mounted flat and rubbed in a figure eight like motion using a piece of worsted wool cloth as the abradant.

As a minimum, v4157 samples that are as homogeneous as possible, drawn from the material from which the disparate test results were obtained, and randomly assigned in equal numbers to each laboratory for testing. 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.

Martindale Test Video —. Wyzenbeek — New Test Video View: If bias is found, either its cause must be found and corrected, or future test results must be adjusted in consideration of the known bias.

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. Wyzenbeek — New Test Video. Fabrics of all types including carpets, garments and nonwovens may be tested under this method. My go to reference on the subject is the Association for Contract Textiles.

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Other fabrics with established test values may be used for this purpose. 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. 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.

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.

Historical Version s – view previous versions of standard. Atsm, specifiers should consider the following qualifiers when assessing double rub ratings: Wyzenbeek results abovedouble rubs have not been shown to be an indicator of increased lifespan.

For more information please refer to abrasion white papers on the ACT website. The values stated in each system may not be exact x4157 therefore, each system shall be used independently of the other. In fact, Wyzenbeek results abovedouble rubs have not been shown to be an indicator of increased fabric lifespan.

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

Laboratory 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 should not be relied upon where differences in laboratory test findings are small. Option 4—Breaking D4175 Loss. Historical Version s – view previous versions of standard.

Whenever possible all materials that are to be compared with each other should be tested under the same pressure and tension. 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. Four options for evaluation are included:. Wyzenbeek testing measures flat abrasion resistance and does not consider edge abrasion or other types of surface wear that may occur in actual s4157 applications.

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A Wyzenbeek machine is used for this test allowing samples of the test fabric to be pulled tight in a frame and held stationary.

Understanding Abrasion Testing

There is no correlation between Wyzenbeek and Martindale results. The number of cycles that the fabric can endure before fabric shows objectionable change in appearance astj breaks, pilling, holes is counted.

This explains the requirements for both residential and contract spaces. It is the responsibility of the d457 of this standard to establish appropriate safety, health and environmental practices and determine the applicability of regulatory limitations prior to use.

Association of Contact Textiles Website. Therefore, ACT does not recommend using absolute numbers for comparision.

As a minimum, the test samples should be used d1457 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. Other procedures for measuring the abrasion resistance of textile fabrics are given in: A fabric with twice the number of abrasion cycles does not indicate double the service life.

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. Specific instances have been described. D457 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.

All of the following issues should be included in any such assessment: Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.