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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Other procedures for measuring the abrasion resistance of textile fabrics are asmt in: Fabric samples are mounted flat and rubbed in a figure eight like motion using a piece of worsted wool cloth as the abradant. 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.

Understanding Abrasion Testing

The abradant must accordingly be changed at frequent intervals or checked periodically against a standard. Wyzenbeek testing measures flat abrasion resistance and does not consider edge abrasion or other types of surface wear that may occur asmt actual upholstered applications.

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.

A fabric with twice the number of abrasion cycles does not indicate double the service life. The relationship varies with different end uses, and different factors may be necessary in any calculation of predicted durability from specific abrasion data. Other procedures for measuring the abrasion resistance of textile fabrics are given in: 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.

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. Wyzenbeek results abovedouble rubs have not been shown to be an indicator of increased lifespan. All of the following issues should be included in any such assessment: For more information please refer to abrasion white papers on the ACT website.

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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. 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.

Studies have shown that Wyzenbeek test results on the same fabric can and do vary significantly from test to test. Therefore, ACT does not recommend using absolute numbers for comparision.

Understanding Abrasion Testing – Alendel Fabrics Ltd.

Wyzenbeek — New Test Video. In fact, Wyzenbeek results abovedouble rubs have not been shown to be an indicator of increased fabric lifespan.

Within the text, the inch-pound units are shown in parentheses. Four options for evaluation are included: Historical Version s – view previous versions of standard.

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.

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. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. Accordingly, specifiers should consider the following qualifiers when assessing double rub ratings: If a bias is found, either a cause must be found and corrected, or future test results must be adjusted in consideration of the known bias.

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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. As a minimum, test 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.

Whenever possible all materials that are to be compared with each other should be tested under the same pressure and tension.

Combining values from the two systems may result in nonconformance with the specification. Four options for evaluation are included:. The measurement of the relative amount of abrasion may also be affected by the method of evaluation and may be influenced by the judgment of the operator. Historical Version s – view previous versions of standard.

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

A Wyzenbeek machine is used for this test allowing samples of the test fabric to be pulled tight in a frame and held stationary. In an effort to bring further clarity to the appropriate consideration of double rub numbers, as of April 1,textile companies and furniture manufacturers that use the ACT certification mark for abrasion on their samples will now include the following statement whenever publishing test results in excess ofdouble rubs: Other fabrics with established test values may be used for this purpose.

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.

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