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Experimental assessment of bench-scale ignitability parameters
RISE - Research Institutes of Sweden, Safety and Transport, Safety. Lund University, Sweden.ORCID iD: 0000-0001-5420-164x
Lund University, Sweden.
2019 (English)In: Fire and Materials, ISSN 0308-0501, E-ISSN 1099-1018, Vol. 43, no 2, p. 123-130Article in journal (Refereed) Published
Abstract [en]

Summary This work aims to explore possible ways of improving the precision of ignition measurements in the cone calorimeter. Both inherent repeatability of parts of the testing equipment and operator-dependent variations are considered. Inherent repeatability is indicated to be slightly improved if the test samples used are circular rather than square. Operator-dependent variation is discussed in terms of the method used for determining ignition. Four procedures are compared, namely, visual observation, usage of a light sensor, and looking at the peak of the second and first derivatives of the mass loss and heat release curves, respectively. Results indicate that the preferable operator-independent method depends on the test conditions; the derivative of the heat release rate is an alternative to the mass loss rate derivative when the scale is of standardised quality. A light sensor for ignition time observation is a good option when the surrounding light is not changed during the test.

Place, publisher, year, edition, pages
2019. Vol. 43, no 2, p. 123-130
Keywords [en]
critical energy flux, critical mass flux, plastics, sustained ignition
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:ri:diva-35192DOI: 10.1002/fam.2675Scopus ID: 2-s2.0-85053479764OAI: oai:DiVA.org:ri-35192DiVA, id: diva2:1251533
Available from: 2018-09-27 Created: 2018-09-27 Last updated: 2019-06-28Bibliographically approved

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Vermina Plathner, Frida

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