10. Calculating and Reporting Results
10.1 The abrasion test results should be reported as volume loss in cubic millimetres in accordance with the specified procedure used in the test. For example, mm3 per ASTM Procedure . While mass loss results may be used internally in test laboratories to compare materials of equivalent densi- ties, it is essential that all users of this test procedure report their results uniformly as volume loss in publications or reports so that there is no confusion caused by variations in density. Convert mass loss to volume loss as follows:
10.2 Adjusting the Volume Loss As the rubber wheel decreases in diameter the amount of scratching abrasion developed in a given practice will be reduced accordingly. The actual volume loss produced by these slightly smaller wheels will, therefore, be inaccurate. The “adjusted volume loss” value takes this into account and indicates the actual abrasion rate that would be produced by a 228.6-mm (9.00-in.) diameter wheel. Calculate the adjusted volume loss (AVL) as follows:
10.3 Reporting Test Results All significant test parameters
and test data as noted in Tables 2 and 3 shall be reported. Any variation from the recommended procedure must be noted in the comments. The report shall include a statement of the current precision and accuracy of the test apparatus as qualified by the testing of Reference Materials (11.6). The volume loss data developed by the initial qualification tests (11.4) or the volume loss data developed by the periodic re-qualification tests (11.4.3) should be listed on the data sheet (Table 3).