ASTM E1995用单独密闭室圆锥形辐射源和水平导向试样测量烟雾不透明度的试验方法
日期:2012-02-08 12:00
od is the specific optical density of smoke from the specimens tested, which is obtained as a function of time, for a period of 10 min.
1.4 An optional fire-test-response characteristic measurable with this test method is the mass optical density (see Annex A1), which is the specific optical density of smoke divided by the mass lost by the specimens during the test.
1.5 The fire-test-response characteristics obtained from this test are specific to the specimen tested, in the form and thickness t
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