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
combusted. The smoke generation of some specimens (especially those undergoing rapid combustion and those which are heavy and multilayered) is influenced by the oxygen concentration in the chamber. Thus, if the atmosphere inside the chamber becomes oxygen-deficient before the end of the experiment, combustion may ceases for some specimens; therefore, it is possible that those layers furthest away from the radiant source will not undergo combustion.
The presence of walls causes losses through dep
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