ASTM E989撞击缓冲等级(IIC)测定的标准分类
日期:2012-02-08 11:54
vels of impact noise generated by a standard tapping machine and transmitted through different floor-ceiling assemblies.
1.2 The name given to the rating is assigned by the test method that invokes this classification.
1.3 This classification is applicable only to one third octave band impact noise data obtained using the standard tapping machine described in Test Methods E 492 and E 1007.
1.4 Test methods that invoke this classification include:
1.4.1 Test Method E 492 - the single-number ra
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09/15 04:47