Tim Marker

Testing of Pre-ox PAN Calibration Materials

FAA Technical Center

Consistency of Test Data Using “Off-the-Shelf” Materials

Consistency of Test Data Using “Off-the-Shelf” Materials

Consistency of Test Data Using “Off-the-Shelf” Materials

Consistency of Test Data Using “Off-the-Shelf” Materials

Consistency of Test Data Using “Off-the-Shelf” Materials

Tex Tech Style 362 (8.0 Oz/Yd2 PAN Blanket)

1.01.52.02.53.03.54.04.55.05.56.06.57.07.58.08.59.09.5

10.010.511.011.512.012.513.013.514.0

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39

Blanket Number

Wei

ght (

Oz/

Yd2 )

40 Blankets Numbered 1-40MFG Range = 7.4 - 8.6

Statistical Analysis

Mean 8.040236499Standard Error 0.05137585Median 8.1Mode 8.115851272Standard Deviation 0.320842079Sample Variance 0.10293964Kurtosis 0.177747998

Skewness 0.39179687Range 1.386389412Minimum 7.493877551Maximum 8.880266963Sum 313.5692235Count 39Confidence Level(95.0%) 0.104004974

Material A (Average)

0

60

120

180

240

Failu

re T

ime

(Sec

onds

)

AverageStd dev

FAA Flanged FAA SocketFAA Socket FAA Air Lab C Socket Lab I Socket Lab J Socket

Material A

0

60

120

180

240

Failu

re T

ime

(Sec

onds

)

FAA Flanged FAA SocketFAA Socket FAA Air Lab C Socket Lab I Socket Lab J Socket

Average = 95.1

Standard Deviation = 14.4

Data Scatter

Scatter

Purpose-Built Materials Supplied by TexTech

362R: Stock material, used in previous round robins

TTI produced 1 roll of 8 oz/yd2 fabric using Zoltek fiber to simulate theperformance of the roll produced in November of 2005. Although TTI usedthe same basic manufacturing methods, they did slow the machine down, andfocused on good weight and thickness distribution for the roll. Each blanketwas weighed and mapped for aerial density.

Material 362R (2006 6557)

0

60

120

180

240

300

1 2 3 4 5 6 7 8 9 10 11 12 13 14

Failu

re T

ime

(Sec

onds

)

124/

125

Average = 171.9

Standard Dev = 14.9

126/

127

128/

129

130/

131

132/

133

134/

135

136/

137

138/

139

140/

141

142/

143

144/

145

146/

147

148/

149

150/

151

% Standard Dev = 8.7

TTI produced a slightly heavier weight (10 oz/yd2) using the Zoltex fiberwith a decrease in the fabric thickness. This produced a fabric with a higherdensity (g/cc) than the previous trails. The trial has increased fabric layers. Again, the draft was reduced to increase the consistency and reduce anyvisible windows.

Purpose-Built Materials Supplied by TexTech

Material 8579, slightly heavier 10 oz/yd2

Material 8579 (2006 6558)

0

60

120

180

240

300

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Failu

re T

ime

(Sec

onds

)

Average = 190.6

Standard Dev = 8.8

25/2

6

27/2

8

29/3

0

31/3

2

33/3

4

35/3

6

37/3

8

39/4

0

11/1

2

13/1

4

15/1

6

17/1

8

19/2

0

21/2

2

23/2

4

% Standard Dev = 4.6

TTI produced a slightly heavier weight (10 oz/yd2) material using theZoltex Fiber in order to extend the burnthrough time slightly and gain agreater understanding of the system. The trial increased the number of individbatt layers from 15 to approximately 23 in order to increase the overallhomogeneity of the material and hopefully provide a predictable burnthroughtime. The draft was also reduced to "0" if possible to increase the consistencyand reduce any visible windows.

Material 8580, slightly heavier 10 oz/yd2

Purpose-Built Materials Supplied by TexTech

Material 8580 (2006 6559)

0

60

120

180

240

300

1 2 3 4 5 6 7 8 9 10 11 12 13 14

Failu

re T

ime

(Sec

onds

)

Average = 201.3Standard Dev = 12.1

213/

214

215/

216

217/

218

219/

220

221/

222

223/

224

225/

226

227/

228

229/

230

231/

232

233/

234

235/

236

237/

238

239/

204

% Standard Dev = 6.0

Interim Findings from Calibration Trials

% Standard Deviation for Material A = 7.1

% Standard Deviation for Material B = 13.6

FAA Lab, Original burner during Round Robin 8:

FAA Lab, Original burner during Calibration Trials:

% Standard Deviation for Material 362R = 8.7

% Standard Deviation for Material 8579 = 4.6

% Standard Deviation for Material 8580 = 6.0