TY - JOUR PY - 1998// TI - Repeatability and reproducibility of fire tests for cigarette ignition of upholstered furniture composites JO - Fire and materials A1 - Hirschler, Marcelo M. SP - 25 EP - 37 VL - 22 IS - 1 N2 - An analysis has been made to compare the repeatability and reproducibility of three tests for cigarette ignition of upholstered furniture composites: ASTM E1352, ASTM E1353 and NIST 851 mock-up. The first two of these tests are traditional methods designed to assess the potential of upholstered furniture components to being ignited by cigarettes while the last one, NIST 851 mock-up, is a new method designed to assess the propensity of cigarettes to ignite upholstered furniture composites. The traditional methods, ASTM E1352 and ASTM E153 use a single cigarette for each determination and can be run in two ways: to obtain a numerical output of char length on the substrate (following the standard) or to obtain a pass/fail result for the substrate (practical use); the precision was analysed in both fashions. The new method, NIST 851 mock-up, uses 144 cigarettes for each determination (48 each on three substrate composites), and assesses the fraction of substrates that have been ignited (char length exceeding 10 mm), i.e. by a combination of pass/fail data. The analysis for actual char length was made according to ASTM E691 guidelines, while the analysis of the pass/fail was made according to a modification applicable to binary data. The precision of the test methods was as follows (in descending order): NIST 851 greater than ASTM E1353 P/F greater than ASTM E1352 P/F greater than ASTM E1353 greater than ASTM E1352.

LA - SN - 0308-0501 UR - http://dx.doi.org/ ID - ref1 ER -