Application of laser-induced breakdown spectroscopy and chemometrics for rapid identification of fire-retardant/resistant coatings from fire residues
نویسندگان
چکیده
The use of fire-retardant/resistant coatings (FRC) is an effective and important method to delay the spread fire or protect intact structure against fire. Due high demand for FRC in end-user industries such as construction transportation, how efficiently determine identity has become a critical but difficult task protection investigation. This paper presents application laser-induced breakdown spectroscopy (LIBS) chemometrics rapid post-fire analysis FRC. We attempt identify four types from residues, based on heating devices, predict temperatures residues were prepared pressed pellets then scanned by integrated LIBS system ultraviolet–visible, visible near-infrared ranges. obtained spectra pre-processed select appropriate number variables, relationship between spectral intensity categorical information was modelled using partial least squares (PLS). class separability demonstrated visualisation low-dimensional space through principal component (PCA) projection. Furthermore, lines that contribute classification regression models identified explained. For identification all samples accurately classified repeated out-of-sample tests. prediction temperature (°C), R2 RMSE 0.96 20.11, respectively. These results coupled with simplicity experimental processes indicate promising candidate on-site
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ژورنال
عنوان ژورنال: Construction and Building Materials
سال: 2022
ISSN: ['1879-0526', '0950-0618']
DOI: https://doi.org/10.1016/j.conbuildmat.2022.126773