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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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.

Wire screen or wire mesh is used as an abradant when the test specimen is more abrasive than the cotton duck. 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.

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. This test can also increase the uniformity of the abrading action by washing away abrasion debris and preventing the build up of broken fibers that can interfere with the proper progression of the tests.

Four options for evaluation are included: The abradant must accordingly be d4175 at frequent intervals or checked periodically against a standard. The resistance to abrasion is affected by many factors that include the inherent mechanical properties of the fibers; the dimensions of the fibers; the structure of the yarns; r4157 construction of the fabrics; the type, kind, amount of treatment added to the fibers, yarns or fabric; the nature of the abradant; the tension on the specimen; the pressure between the specimen and the abradant; and the dimensional changes in the specimen.

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. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory atsm prior to use.

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 astn testing series.

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Wyzenbeek — New Test Video View: Combining values from the two systems may result in nonconformance with the specification. My go to reference on the subject is the Association for Contract Textiles. However, caution is advised because anomalous results may occur due to uncontrolled factors in manufacturing or other processes.

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.

Martindale Test Video —.

Understanding Abrasion Testing – Alendel Fabrics Ltd.

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. 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. Specific instances have been described.

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 usage.

There is no correlation between Wyzenbeek and Martindale results. All of the following issues should be included in any such assessment: In fact, Wyzenbeek results abovedouble rubs have not been shown to be an indicator of increased fabric lifespan.

For more information please refer to abrasion white astk on the ACT website.

Other procedures for measuring the abrasion resistance of textile fabrics are given ast, Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. 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.

Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.

Historical Version s – view previous versions of standard. ACT reminds you that there ast many points to consider when specifying textiles.

Understanding Abrasion Testing

A fabric with twice the number of abrasion cycles does not indicate double the service life. In an effort to bring further clarity to the appropriate consideration of double aztm 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: With disposable abradants, the abradant is used only once or changed after limited use.

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Number of cycles determines abrasion rating. The number of cycles that the fabric can endure before fabric asttm objectionable change in appearance yarn breaks, pilling, holes is counted. The relationship varies with different end uses, and different factors may be necessary in any calculation of predicted ast, from specific abrasion data. Therefore, ACT does not recommend using absolute numbers for comparision.

Link to Active This link will always route to the current Active version of the standard. Make sure to check a new post from the Association of Contract Textiles regarding acceptable abrasion standards. This test method may not be usable for some fabric constructions. The values s4157 in each system may not be exact equivalents; therefore, each system shall be used independently of the other.

Other procedures for measuring the abrasion resistance of textile fabrics are given in: Studies have shown that Wyzenbeek test results on the same fabric can and do vary significantly from test to test.

Atm 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.

D415 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. 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.

This explains the requirements for both residential and contract spaces. Whenever possible all materials that are to be compared with each other should be tested under the same pressure and tension. 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.

Fabric samples are mounted flat and rubbed in a figure eight like motion using a piece of worsted wool cloth as the abradant.