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3 Federal Aviation Administration Materials Meeting – NBS / OSU Updates October 21 st & 22 nd, Mini-Study ‘Mini-Study’ Complete –4 Labs In All –Two Honeycomb Panels S-SCCP (Brown) Marker Panel (White) OSU –Peak Heat Release Rate –2 minute Total Heat Release Rate –Time To Peak NBS –Maximum Specific Optical Density (4 Minute)
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Federal AviationAdministrationOSU & NBS Updates
2008 October Materials Meeting
Materials Working Group
Michael Burns, FAA Tech Center
October 21st & 22nd, 2008
2 2Federal AviationAdministration
Materials Meeting – NBS / OSU UpdatesOctober 21st & 22nd, 2008
Agenda1. “Mini” European Round Robin Results2. NBS Update
• Photometric System Round Robin• Experimental Furnace
3. Visit To Vatell Corp.• Calibration Method• Recoating Techniques
4. New FAA Equipment5. Maintenance Tips & Reminders6. Next Steps
3 3Federal AviationAdministration
Materials Meeting – NBS / OSU UpdatesOctober 21st & 22nd, 2008
2008 Mini-Study • ‘Mini-Study’ Complete
– 4 Labs In All– Two Honeycomb Panels
• S-SCCP (Brown)• Marker Panel (White)
• OSU– Peak Heat Release Rate– 2 minute Total Heat Release Rate– Time To Peak
• NBS– Maximum Specific Optical Density (4 Minute)
4 4Federal AviationAdministration
Materials Meeting – NBS / OSU UpdatesOctober 21st & 22nd, 2008
Schneller Panel - Peak HRR% Standard Deviation = 22.0%
(44.9) (55.7) (59.9) (76.3)
0
10
20
30
40
50
60
70
80
90
A B C D
Lab Code
Peak
kW
/m2
5 5Federal AviationAdministration
Materials Meeting – NBS / OSU UpdatesOctober 21st & 22nd, 2008
Schneller Panel - Time to Peak HRR% Standard Deviation = 17.4%
(40) (42) (42) (57)
0
10
20
30
40
50
60
D A C B
Lab Code
Seco
nds
6 6Federal AviationAdministration
Materials Meeting – NBS / OSU UpdatesOctober 21st & 22nd, 2008
Schneller - 2 minute Total HRR% Standard Deviation = 48.9%
(37.6) (41.8) (45.0) (94.7)
0.0
10.0
20.0
30.0
40.0
50.0
60.0
70.0
80.0
90.0
100.0
B C A D
Lab Code
(kW
/m2)
Min
7 7Federal AviationAdministration
Materials Meeting – NBS / OSU UpdatesOctober 21st & 22nd, 2008
Marker Panel - Peak HRR% Standard Deviation = 40.7%
(34.7) (36.1) (42.6) (75.6)
0.0
10.0
20.0
30.0
40.0
50.0
60.0
70.0
80.0
B A C D
Lab Code
kW/m
2
8 8Federal AviationAdministration
Materials Meeting – NBS / OSU UpdatesOctober 21st & 22nd, 2008
Marker Panel - Time to Peak HRR% Standard Deviation = 32.5%
(15) (30) (32) (35)
0
5
10
15
20
25
30
35
40
C D A B
Lab Code
Seco
nds
9 9Federal AviationAdministration
Materials Meeting – NBS / OSU UpdatesOctober 21st & 22nd, 2008
Marker Panel - 2 Min Total HRR% Standard Deviation = 57.6%
(30.7) (40.2) (47.2) (101.1)
0.0
20.0
40.0
60.0
80.0
100.0
120.0
C B A D
Lab Code
(kW
/m2)
min
10 10Federal AviationAdministration
Materials Meeting – NBS / OSU UpdatesOctober 21st & 22nd, 2008
Schneller Panel - Max Ds during 4 minutes% Standard Deviation = 15.8%
(141.8)
(182.7)
(193.4)
0.0
50.0
100.0
150.0
200.0
250.0
D A C
Lab Code
Ds
11 11Federal AviationAdministration
Materials Meeting – NBS / OSU UpdatesOctober 21st & 22nd, 2008
NBS Photometric System Round Robin
• FAA Is Currently Conducting A Round Robin Check Out Of The NBS Photometric System Using Neutral Density Light Filters
• These Filters Provide A Linearity Check Of Five Data Points
12 12Federal AviationAdministration
Materials Meeting – NBS / OSU UpdatesOctober 21st & 22nd, 2008
NBS Photometric System Round Robin• No Furnace Heat Or Pilot Burner Required • Zero Then Span system
• Gradually Slide Filter Over Lower Glass Window• 12 Domestic Labs Have Participated To Date• Filter Information:
• Edmund Optics• http://www.edmundoptics.com/onlinecatalog/Display
Product.cfm?productid=1523• Filters Available For International Lab Testing Within
The Next Few Weeks.
13 13Federal AviationAdministration
Materials Meeting – NBS / OSU UpdatesOctober 21st & 22nd, 2008
NBS Furnace• NBS Furnace Upgrade
– Longer Service Life Of Heating Element.• Experimental Furnace Endurance Testing Progress
– Incoloy Vs. Inconel– Approx. 742 Hours Of Operation– 43 Cycles– 28 Samples
14 14Federal AviationAdministration
Materials Meeting – NBS / OSU UpdatesOctober 21st & 22nd, 2008
Visit To Vatell Corp.• Calibration Method
• Differed From What The FAA Has Been Doing Ramping Heat Up During Calibration Vs. Down
• New Study In Progress To Measure Any Differences Between Procedures
• Observed Re-Coating Techniques• 1000 - 1B’s (Lower Range, Most Common)
• Black Velvet• 1000 - 1A’s
• Krylon• Visit To Medtherm Corp. Slated For Early 2009
15 15Federal AviationAdministration
Materials Meeting – NBS / OSU UpdatesOctober 21st & 22nd, 2008
New FAA Equipment• FAA Has Recently Purchased A New:
OSU Heat Release Rate Apparatus– Fire Test Technology Ltd.
NBS Smoke Chamber– Newport Scientific, Inc.
• Due To Arrive In the Next Few Weeks• Facility Being Painted• Installed Once Complete• Original Equipment Will Remain Available For Special
Testing And Occasional Training
16 16Federal AviationAdministration
Materials Meeting – NBS / OSU UpdatesOctober 21st & 22nd, 2008
Maintenance Tips & Reminders• OSU
- Inspect And Clean Lower Air Distribution Plate On A Regular Basis
- Keep The Upper Cone Walls And Chimney Clean• NBS
- Remember To Clean Windows Before Each Test (Top Then Bottom)
- Ensure Proper Alignment Of Pilot Tubes To Sample Face
17 17Federal AviationAdministration
Materials Meeting – NBS / OSU UpdatesOctober 21st & 22nd, 2008
Next Steps• International Labs Who Would Like To Participate In
The NBS Photometric System Round Robin Please Contact The FAA
• Complete Study To Measure Any Differences Between Heat Flux Gage Calibrating Procedures
• FAA Remains In The Process Of Updating Chapter 6 Of The FAA Handbook (NBS)
• Thank You For Comments On Chapter 6 Updates• FAA Contact Information:
Michael Burns At [email protected] +1 (609) 485-4985
