Mathematical expression of Heat Release Rate Curve and proposal of ‘Burning Index’

✍ Scribed by Fumiya Numajiri; Kingo Furukawa

• Publisher: John Wiley and Sons
• Year: 1998
• Tongue: English
• Weight: 114 KB
• Volume: 22
• Category: Article
• ISSN: 0308-0501
• DOI: 10.1002/(sici)1099-1018(199801/02)22:1<39::aid-fam629>3.0.co;2-h

✦ Synopsis

Heat Release Rates of organic materials are studied in many countries, but there is no mathematical formula to represent their shape. We considered a mathematical expression of the Heat Release Rate Curve by a simple equation. And we also derived the index of degree of combustibility, named 'Burning Index (BI)'. The Heat Release Rate Curve is expressed by the derivative of a probability function of maximum value and has three parameters; an amplitude coefficient, a time width coefficient and an ignition index. BI is in proportion to an amplitude and a time width and in inverse proportion to an ignition index. BI values of cable plastic compounds with flame-retardant material had good relations with the quantity of non-organic ingredients.