In this work, cone calorimeter tests were conducted to investigate fire properties of interior materials (floor covering [FC], aluminum plate covered with paint [APCP], light diffuser [LD], and gel coat [GC]) used in low‐floor light‐rail trains. Ignition time (t_ig) of each material decreases with the increase of radiative heat flux. The decreasing order of the four samples by ignition time under the same radiative heat flux is LD > APCP > FC > GC. The heat release rate (HRR), peak value of HRR (PHRR), time from ignition to PHRR (t_p), fire growth rate index (FIGRA), and fire growth index (FGI) rise with the increasing radiative heat flux. For the FC, LD, and GC, single HRR peak is observed in the HRR history while three peaks are observed for APCP. For PHRR, LD > FC > APCP > GC, while for t_p, GC < FC < APCP < LD. Under most conditions, the FIGRA and FGI of the FC is the highest among the four materials. Results of this work are beneficial to evaluate fire hazard of low‐floor light‐rail train and determine the emphasis of fire prevention.

中文翻译：

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低层轻轨列车内饰材料防火性能的实验研究

在这项工作中，进行了锥形量热仪测试，以研究用于低地板的室内材料（地板覆盖[FC]，铝板涂有油漆[APCP]，光扩散器[LD]和胶衣[GC]）的防火性能轻轨火车。每种材料的点火时间（t _ig）随辐射热通量的增加而减少。在相同的辐射热通量下，四个样品随点火时间的递减顺序为LD> APCP> FC> GC。放热率（HRR），HRR峰值（PHRR），从点火到PHRR的时间（t _p），火的增长率指数（FIGRA）和火的增长指数（FGI）随辐射热通量的增加而上升。对于FC，LD和GC，在HRR历史记录中观察到单个HRR峰，而对于APCP观察到三个峰。对于PHRR，LD> FC> APCP> GC，对于t _p，GC <FC <APCP <LD。在大多数情况下，FC的FIGRA和FGI在四种材料中最高。这项工作的结果有助于评估低层轻轨火车的火灾隐患，并确定防火重点。