MIL-DTL-11891G(AT)
TABLE IV. Classification of inspections and frequencies (roadwheel path and ground pad).
Require-
First
In process
Control
Title
ment
Inspection Qualification article
Inspection CI
test
Specific gravity
3.3.4.1
4.7.2.1
1/
1/
1/ Batch
Hardness
3.3.4.2
4.7.2.2
1/
1/
1/Shift
1/Shift
Tensile strength 3.3.4.3
4.7.2.3
1/
1/
1/Shift
1/Week
Tensile strength 3.3.4.4
4.7.2.4
1/
1/
1/Month
1/Month
(aged)
Ultimate
3.3.4.3
4.7.2.5
1/
1/
1/Shift
1/Week
elongation
Ultimate
1/
1/Month
1/Month
3.3.4.4
4.7.2.6
1/
elongation
(aged)
1/
1/
1/Shift
1/Week
Tensile stress
3.3.4.3
4.7.2.7
1/
1/
1/Bi-Monthly
TGA
3.3.4.5
4.7.2.8
1/
1/
1/Batch
Cure meter
3.3.4.6
4.7.2.9
1/
1/
1/Shift
Adhesion
3.3.4.7
4.7.2.10
1/
1/
1/Month
Ozone
3.3.4.8
4.7.2.11
resistance
3.3.4.9
1/
1/
1/Month
Brittleness
3.3.4.10
4.7.2.12
1/
1/
4/
GC mass spec
3.3.4.11
4.7.2.13
1/
1/
3/
Blowout
3.3.4.12
4.7.2.14
2/
2/
2/
Workmanship
3.5.2
4.5.3.1
2/
2/
2/
Product
3.3.4.13
4.5.3.1
marking
1/
Road test
3.4.2.1
4.3.2
NOTES:
1/ Samples shall be taken as specified in section 3. Unless otherwise specified (see 6.2),
sample size shall be one.
2/ Sample size shall be taken in accordance with table V.
3/ Samples shall be required by the Government as specified in 3.3.4.12.
4/ Samples may be selected by the Government as specified in 3.3.4.11.
5/ One batch is identified as a full mixer of rubber compound. "1/batch" indicates one
sample per batch. "1/bi-monthly" indicates one sample every other month.
6/ Samples for in-process and control testing shall be selected at the locations as specified in
4.3.1.3 and 4.3.1.4. In-process tests shall normally be performed on finished batches.
Control tests shall be performed primarily on finished pads and roadwheel path rubber.
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