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
en in the form and thickness tested and are not inherent fundamental properties of the material, product, or assembly tested.
This test method uses a photometric scale to measure smoke obscuration, which is similar to the optical density scale for human vision. The test method does not measure physiological aspects associated with vision.
At the present time no basis exists for predicting the smoke obscuration to be generated by the specimens upon exposure to heat or flame under any fire conditi
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