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Evaluation of Common Ignition Models for Use with Marine Cored Composites

机译：用于船用带芯复合材料的通用点火模型的评估

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摘要

With the adoption of the High Speed Craft Code the importance of fire safety analytical tools has been elevated. Input data such as ignition properties of cored composite panels will be needed to simulate surface flame spread behaviour. The ease of customizing cored panels for high speed craft means that numerous panel systems are possible on one craft. Understanding how skin thickness and core composition effect ignition is important for efficient evaluation of ignition properties and for fire safety design simulations. To study the effect of skin thickness and core composition, ten material systems were evaluated in a Cone Calorimeter at applied heat fluxes of 20 kWm~(-2) to 90 kWm~(-2). The systems were a balsa core panel (core thickness 9.5 mm) with three different GRP skins, 1.5 mm, 3 mm and 8 mm, each of the three skins over a copper substrate, the three skins over a ceramic fibreboard substrate and a thermally thick GRP skin. Over the range of applied heat fluxes a change in GRP behaviour from thermally thick to non-thick was observed. The sensitivity of three simple ignition models to this change was investigated. It was found that the ignition models were not able to resolve the effect of skin thickness and core composition.
机译：随着《高速船规范》的通过，消防安全分析工具的重要性得到了提高。将需要输入数据，例如带芯复合板的点火特性，以模拟表面火焰扩散行为。定制高速船芯板的简便性意味着在一艘船上可以使用多种面板系统。理解表皮厚度和芯组成如何影响着火对于有效评估着火性能和进行消防安全设计仿真至关重要。为了研究表皮厚度和核心组成的影响，在锥形量热仪中，在施加20 kWm〜（-2）至90 kWm〜（-2）的热通量的情况下评估了十种材料系统。该系统是轻木芯板（芯厚9.5毫米），具有三个不同的GRP蒙皮（1.5毫米，3毫米和8毫米），三个蒙皮分别位于铜基板上，三个蒙皮位于陶瓷纤维板基板上，并且具有热厚GRP皮肤。在所施加的热通量范围内，观察到GRP行为从热变厚到不变厚。研究了三种简单点火模型对这种变化的敏感性。发现点火模型不能解决表皮厚度和核心组成的影响。

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