Effect of Thread Angle on Flame Spread Behaviour over Combined Fabric of Kenaf/Polyester.

Understanding flame spread behavior is crucial to Fire Safety Engineering. It is noted that the natural fiber exhibits different flame spread behavior than the one of the synthetic fiber. This different may influences the flame spread behavior over combined fabric. The purpose of the research is to study the effect of thread angle on flame spread behavior over kenaf/polyester fabric. Experiments are done for several different weft thread angle of θ = 0°, 45° and 90°. The data collected is recorded via videos and images are captured for measuring the flame spread rate and detail observation of characteristics during burning process. From the results obtained, it is seen that material and thread angle have some influence on the flame spread behavior over fabrics. The flame spread rate of 100% kenaf is lower than the one of kenaf/polyester combined fabrics. It is also seen that the flame is extinguished for 100% polyester. The flame spread velocity also changes when the weft thread angle change from θ = 0° to θ = 90°. [ABSTRACT FROM AUTHOR]