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.

Author: Shakazragore Goshura
Country: Sri Lanka
Language: English (Spanish)
Genre: Education
Published (Last): 6 August 2005
Pages: 316
PDF File Size: 1.44 Mb
ePub File Size: 1.58 Mb
ISBN: 978-3-23346-764-4
Downloads: 28222
Price: Free* [*Free Regsitration Required]
Uploader: Taujar

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 aztm are randomly assigned in equal numbers to each laboratory for testing. Wyzenbeek — New Test Video.

Number of cycles determines abrasion rating. All of the following issues should be included in any such assessment: Specific instances have been described. Wyzenbeek — New Test Video View: There is no correlation between Wyzenbeek and Martindale results. 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:. 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. Fabrics of all types including carpets, garments and nonwovens may be tested under this method.

Other fabrics with established test values may be used for this purpose. For more information please refer to abrasion white papers on the ACT website. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. 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. Collectively, these considerations will facilitate your selection of the most appropriate fabric for the project.

Studies have shown that Wyzenbeek test results on the same fabric can and do vary significantly from test to test.

Referenced Documents purchase separately The documents listed below are referenced within the subject s4157 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. 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 d4175.

  CONVERT IMAGEMAGICK DPI PDF

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

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. 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.

However, caution is advised because anomalous results may occur due to uncontrolled factors in manufacturing or other processes.

Accordingly, specifiers should consider the following qualifiers when assessing double rub ratings: The relationship varies with different end uses, and different factors may be necessary in any calculation of predicted durability from specific abrasion data. 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; the 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.

Understanding Abrasion Testing

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. Wyzenbeek testing measures flat abrasion resistance and does not consider edge abrasion or other types of surface wear that may occur in actual upholstered applications.

The measurement of the relative amount of abrasion may ast be affected by the method of evaluation and may be influenced by the judgment of the operator. Fabric samples are mounted flat and rubbed in a figure eight like motion using a piece of worsted wool cloth as the abradant.

The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. 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.

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.

For survey details and additional research, read our White Papers. 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.

  CARTILLA LABORAL 2009 LEGIS PDF

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. A Wyzenbeek machine is used for this test allowing samples of the test fabric to be pulled tight in a frame and held stationary. ACT reminds you that there are many points to consider when specifying textiles.

It is the responsibility d41557 the user of this standard to establish appropriate safety, health and environmental practices and determine the applicability of regulatory limitations prior d41157 use.

Within the text, the inch-pound units are shown in parentheses. This explains the requirements for both residential and contract spaces. Other procedures for measuring the abrasion resistance of textile fabrics are given in: Combining values from the two systems may result in d41157 with the specification.

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

Understanding Abrasion Testing – Alendel Fabrics Ltd.

Wyzenbeek results abovedouble rubs have not been shown to be an indicator of increased lifespan. 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 asfm for abrasion on their samples will now include the following statement whenever publishing test results in excess ofdouble rubs: Wire screen or wire mesh is used as an abradant when the test specimen is more abrasive than the cotton duck.

As a minimum, test samples that are as homogeneous as possible, drawn from the material from which the disparate test results were obtained, and aztm assigned in equal numbers to each laboratory for testing. The number of cycles that the fabric can endure before fabric shows objectionable change in astj yarn breaks, pilling, holes is counted.

The results obtained from the use of this instrument assist in evaluating these factors d41557 to the wear serviceability of the final textile product in specific end uses.