 |
|||
|
Page Title:
Preproduction and Periodic production inspection |
|
||
| ||||||||||
|
|  MIL-S-19819C(OS)
Step 1.
Upon initiation of production randomly select one
unit from each group of 10 units. Upon satisfactory
compliance of samples selected from 3 consecutive
groups, shift to Step 2.
Randomly select one unit from each group of 25 units.
Step 2.
Upon satisfactory compliance of samples selected
from 3 consecutive groups, shift to Step 3.
Randomly select one unit from each group of 50 units.
Step 3.
Continue Step 3 for the balance of the contract or
until a defective unit is found.
4.3 Preproduction and Periodic production inspection. The preproduction
and periodic production samples, after satisfactorily passing the quality
conformance inspections detailed in 4.4, shall be subjected to the follow-
ing tests and examinations. Certified inspection data covering the results
of preproduction and periodic production inspections shall be forwarded to
the procuring activity.
4.3.1 Vibration. The firing switch shall be subjected to vibration
testing as specified in 4.3.1.1, 4.3.1.2, and 4.3.1.3.
4.3.1.1 Vibration; ready nonoperating or ready condition. The firing
switch, mounted as specified on Drawing 1472663 or 1472712, shall be sub-
jected to the vibration testing of Schedule I in each of three mutually
perpendicular axes. Thereafter, the switch shall show no damage and shall
meet all performance requirements and product characteristics of this
specification.
Schedule I
Minimum Test Duration
Frequency
+130F
-20F
Room Temp.
Amplitude
Range
15 Min.
15 Min.
60 Min.
0.060 0.006 in.
10-30 Hz
15 Min.
15 Min.
60 Min.
3g 0.3g
31-60 Hz
15 Min.
15 Min.
60 Min.
3g 0.3g
61-100 Hz
The frequency shall be continuously varied between each of the limits
given, at a uniform rate, over a 3- to 5-minute period for the duration of
the test.
8
|
|
Privacy Statement - Press Release - Copyright Information. - Contact Us |
Click
here for thousands of PDF manuals