ASTM D8115-17(R2021) pdf free download

ASTM D8115-17(R2021) pdf free download.Standard Test Method for Rubber Property—Abrasion Resistance (Multi-Directional Platform Abrader)
1. Scope
1.1 This test method covers the measurement of abrasion resistance of rubbers (vulcanized thermoset rubbers and ther- moplastic elastomers) that are subject to abrasive/frictional wear in actual service. The abrasion resistance is measured by simultaneously moving 4 test pieces across the surface of abrasive sheets in a soft lissajous movement, and is expressed as volume loss in cubic millimeters where a smaller number indicates better abrasion resistance. 1.2 Test results obtained by this test method shall not be assumed to represent the wear behavior of rubber products in actual service. 1.3 Results obtained by this test have shown to be similar to those obtained using Test Method D5963 and ISO 4649. 1.4 The values stated in SI units are to be regarded as the standard. The values in parentheses are for information only. 1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appro- priate safety, health, and environmental practices and deter- mine the applicability ofregulatory limitations prior to use. 1.6 This international standard was developed in accor- dance with internationally recognized principles on standard- ization established in the Decision on Principles for the Development of International Standards, Guides and Recom- mendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
3. Terminology
3.1 Definitions: 3.1.1 abrasion loss, A, (mm 3 ), n—the volume loss of a defined rubber test piece determined by sliding the test piece under specified conditions over the surface ofan abrasive sheet mounted to an abrading table of specified dimensions.
4. Summary of Test Method
4.1 This test method provides procedures for preparing test pieces of specified dimensions from vulcanized thermoset rubbers or thermoplastic elastomers and for evaluating their abrasion resistance by sliding a test piece across the surface of an abrasive paper attached to an abrading table. 4.2 The test is performed under specified conditions of contact pressure, sliding distance, travel speed ofthe test piece, and the degree of abrasiveness of the abrasive sheet. These are outlined in 7.1. 4.3 The abrasion resistance is reported as abrasion loss (volume) in cubic millimeters and is calculated from the mass loss of the test piece and density of the test rubber. A smaller number indicates a higher resistance to abrasion.
5. Significance and Use
5.1 Abrasion resistance is a performance factor of para- mount importance for many rubber products, such as tires, conveyor belts, power transmission belts, hoses, footwear, and floor covering. A test capable of measuring resistance to abrasion of rubber, including uniformity of wear behavior under abrasive/frictional service conditions is therefore highly desirable. 5.2 This test method may be used to estimate the relative abrasion resistance of different rubbers. Since conditions of abrasive wear in service are complex and vary widely, no direct correlation between this accelerated test and actual perfor- mance can be assumed. 5.3 This test method is suitable for comparative testing, quality control, specification compliance testing, referee purposes, and research and development work.
6. Limitations
6.1 Test pieces containing voids or porosity, or both, will yield unreliable test results. 6.2 Test pieces that bounce (chatter) over the surface of the abrasive sheet rather than running smoothly will produce inaccurate test results and are not candidates for this test method. 6.3 Test pieces that tend to extensively smear the surface of the abrasive sheet will provide meaningless test results. 6.4 Test results obtained under any of the above conditions shall not be used to reach conclusions regarding the relative abrasion resistance of rubbers.