ASTM C1559-03
(Test Method)Standard Test Method for Determining Wicking of Glass Fiber Blanket Insulation (Aircraft Type)
Standard Test Method for Determining Wicking of Glass Fiber Blanket Insulation (Aircraft Type)
SCOPE
1.1 This test method covers a laboratory procedure for evaluating the tendency of, aircraft type, glass fiber blanket insulation to wick water.
1.2 The wicking characteristics of materials may be affected by environmental conditions such as temperature and humidity. Values obtained as a result of this test method may not adequately describe the wicking characteristics of materials subject to conditions other than those indicated in the test method.
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
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Designation: C 1559 – 03
Standard Test Method for
Determining Wicking of Glass Fiber Blanket Insulation
(Aircraft Type)
This standard is issued under the fixed designation C 1559; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
1. Scope inch below the water surface; distance of wicking is noted
every 24 h for 96 h and then again at the end of 168 h.
1.1 This test method covers a laboratory procedure for
evaluating the tendency of, aircraft type, glass fiber blanket
5. Significance and Use
insulation to wick water.
5.1 The tendency of the insulation toward wicking can
1.2 The wicking characteristics of materials may be affected
result in an increase in weight and a resultant potential
by environmental conditions such as temperature and humidity.
degradation in the properties of the insulation.
Values obtained as a result of this test method may not
adequately describe the wicking characteristics of materials
6. Apparatus
subject to conditions other than those indicated in the test
6.1 As described in the Procedure section of this test
method.
method.
1.3 This standard does not purport to address all of the
6.2 Steel Rule, accurate to 6 0.05 in. (1 mm).
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro-
7. Sampling, Test Specimens, and Test Units
priate safety and health practices and determine the applica-
7.1 Six specimens shall be tested for each procedure, cut
bility of regulatory limitations prior to use.
with the axis parallel to the length and six cut with the axis
perpendicular to the length from a representative package.
2. Referenced Documents
7.2 The specimens shall be 1- by 6-in. (25.4- by 152.4-mm)
2.1 ASTM Standards:
by full sample thickness.
C 168 Terminology Relating to Thermal Insulating Materi-
2 7.3 The insulation shall be tested without facing or jacket-
als
ing.
C 390 Criteria for Sampling and Acceptance of Preformed
Insulation Lots
8. Conditioning
C 800 Specification for Glass Fiber Blanket Insulation (Air-
8.1 As described in the Procedure section of this test
craft Type)
method.
3. Terminology
9. Procedure A—Wicking as Received
3.1 Definitions—Terminology C 168 shall be considered as
9.1 Condition specimens for at least 24 h at 73 6 4°F (23 6
applying to the terms used in this specification.
2°C) and 50 6 5 % relative humidity.
3.1.1 wicking—the infiltration of a wetting liquid into a
9.2 With fine wire, fasten loosely six specimens (three cut
glass fiber blanket by capillary attraction.
with the axis parallel to the length and three cut with the axis
perpendicular to the length) to a grease-free 0.025 to 0.035 in.
4. Summary of Test Method
(0.64 to 0.89 mm) 8 by 8 mesh stainless steel wire screen.
4.1 The insulation is suspended in de-ionized or distilled
Position this assembly in an upright position so the ends of the
water so that the bottom of the specimen is submerged to one
specimens touch the bottom of the container. The 6-in. sample
This test method is under the jurisdiction of ASTM Committee C16 on Thermal
Insulation and is the direct responsibility of Subcommittee C16.33 on Insulation
Finishes and Moisture. An alternative attachment method would be to attach the specimens to the wire
Current edition approved June 10, 2003. Published August 2003. mesh using a hot melt adhesive (at approximately ⁄2 in. below and above the water
Annual Book of ASTM Standards, Vol 04.06. line, and approximately ⁄2 in. from the top of the specimen).
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C1559–03
TABLE 1 Water Repellency Round Robin Statistical Results
Using Standard E 691
Standard
Repeatability Reproducibility
Cell Deviation Repeatability Reproducibility
Standard Standard
A B
Average of the Cell Limit Limit
Deviation Deviation
Averages
X bar S S S rR
x r R
0.22 in. 0.11 0.07 0.11 0.18 0.30
A
95 % confidence = 2.8 · S
r
B
95 % confidence = 2.8 · S
R
constant weight and weighed. The leached specimen shall be
tested according to procedure outlined in 9.2-9.5.
12. Calculation or Interpretation of Results
12.1 Determine the amount of wicking by measurement
with a steel rule as described in 6.2.
FIG. 1 Typical Specimen Mounting for Wicking Test
12.2 Wetting of the submerged portion of the wicking
specimens is permissible. Wicking is the distance of wetting
dimension is in a perpendicular direction to the water surface. above the water surface (average value of center-point
...
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