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Page Title:
Insulation resistance, thermal shock, vibration and function |
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|  MIL-P-63316(AR)
4.5.5.1 Insulation resistance, thermal shock, vibration and
function. The battery primer sample shall be subjected to the required
tests in the following sequence:
Measure insulation resistance between the two shunted
a.
electrodes and cup in accordance with 4.5.8.
b.
Condition for two (2) hours min. at minus 60 - 5F.
Remove from cold chamber and within 20 seconds transfer to
c.
a hot chamber at 155 + 5F.
d.
Condition for two (2) hours min. at 155 + 5F and 20%
max. relative humidity.
Remove from hot chamber.
e.
Vibrate for 15 minutes, minimum in a sweep covering a
f.
frequence range of 25-500-25 cycles per second, parallel to
the transverse orthogonal axis, with base charge down and a
2 0.2 G's peak amplitude.
Measure resistance between shunted electrodes and cup in
g.
accordance with 4.5.8.
h.
The primers shall be assembled to test fixture (see
4.4.5.1) and functioned as specified in 4.5.4.1 and
4.5.4.2. Observation shall be made to determine compliance
with requirements of 3.4.1 and 3.5.1. Any primer which
fails to comply with the applicable requirement shall be
classed defective.
(Destructive test).
4.5.5.2 Waterproofness. Fifty (50) battery primers from each lot
shall be subjected to this test. The battery primer shall be immersed in
water to a min. depth of two (2) inches for 48 hours, min. The required
water temperature of 70 5F shall be maintained for the immersion
period. At the end of the immersion time, the battery primer shall be
removed from the water, assembled into a test fixture (see 4.4.5.1) and
fired by applying the energy from a 100 microfarad capacitor charged to
1.6 volts, max. Observation shall be made to determine compliance with
the requirements of 3.4.1.2. If any battery primer fails to meet the
requirements on the first attempt it shall be classed defective. If one
(Destructive test)
or more defective occur, the lot shall be rejected.
NOTE:
An alternative method for testing seal integrity may be
submitted by the contractor.
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