BMC-AB

BMC-AB

First select test method, then estimate the initial quality and △ m value to begin test. If the first sample damaged ,reduce quality by weight △ m ; If the first sample not damaged ,increase weight by a weight △ m in order to test the quality. In short, the use of weight to reduce or increase the quality depending on the previous sample damaged or not. Calculate total N damaged sample after test 20 , if N is equal to 10, the test is completed; if N is less than 10, to continue the test until the supplementary sample N equals 10; if N is bigger than 10, continue until the not damaged sample total the equal to 10; Finally calculate impact results by the falling dart impact tester automatically .

Confirm to

ASTM D1709, ISO 7765-1-1988, JIS K7124-1, GB/T 9639.1-2008