FIREPROOF AND FIRE RESISTANT MATERIALS

1
FIREPROOF AND FIRE RESISTANT MATERIALS

• Federal Aviation Administration
• Project Manager J. Reinhardt
• William J. Hughes Technical Center
• Airport and Aircraft Safety
• Research and Development Division
• Atlantic City International Airport, NJ

2
PURPOSE

• An ARAC Subcommittee is looking at revising
  AC25-135 (Powerplant Installation and Propulsion
  System Component Fire Protection Test Methods,
  Standards, and Criteria)
• Develop a means to comply with the AC in order to
  evaluate various test specimens to determine
  whether they may be classified as
• Fireproof
• Fire Resistant
• Determine the feasibility of the testing methods
  performed.

3
Current Proposed Procedure

• CALIBRATION OF THERMOCOUPLES

• Preheat Burner for 2 minutes.
• Place Flame on Thermocouples for 90 seconds.
• All Thermocouples must read 2000F /- 150F .

4
Current Proposed Procedure

• CALIBRATION OF CALORIMETERS

• Preheat Burner for 2 minutes.
• Place Flame on Calorimeters for 90 seconds.
• All Calorimeters must read above 10 BTU/(ft²sec
  ) .

5
Current Proposed Procedure

• BURNER TEST
• Preheat Flame for 2 minutes.
• Place Flame for 16 minutes on the various test
  specimens
• 4140 Steel (reference material)
• 15-5 PH Steel
• Titanium 6A1-4V
• Inconel 718
• Aluminum 7075
• Record time temperature data at the 0 , 25,
  50, 75, and 100 positions of the diameter.
• Determine the loss of Ultimate Strength at the 5
  minute and 15 minute intervals.

6
Status

• TESTING
• Three out of the five material selected have been
  tested according to the prescribed procedure
  (4130 Steel, 15-5 PH Steel, and Titanium 6A1-4V)
  .
• Available test data is currently been analyzed
  (reference material)
• PROCEDURE
• ARAC Subgroup is currently looking at the data to
  determine if a test protocol change is required.