The Effect of Varying the Air Openings around the Sliding Platform in the Radiant Panel Insulation Test
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2024-10-01
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By Rehn, Steven
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Edition:Final Report
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Abstract:A radiant panel insulation test round robin with 24 labs was conducted in 2015 and the test results varied considerably between labs. Dimension data about each apparatus was collected from each participating lab and the air openings around the sliding platform were identified as one possible cause of the test discrepancies. Preliminary studies were then conducted at the FAA Technical Center with four different insulation materials while varying the air openings. This testing found that certain materials failed more often when the openings were closed. A larger study was designed with four labs testing many parameters with the air gaps fully closed, partially open, and fully open. Each lab conducted a three-position calibration, measured the sliding platform top surface temperatures using a thermocouple array, and tested 20 samples of two different materials at each gap setting. Statistical analysis of variance was used to compare the material test data. Test results showed similar trends between all four labs for the calibration and surface temperature data, with mixed results for the material testing data. Minimum opening dimensions around the sliding platform were added to the Aircraft Materials Fire Test Handbook Revision 3 based on the results of this study.
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