Downloaded from https://www.everyspec.com MIL-STD-322B 20 March 1984 ~... /- ~ 5.1.11 Temperature aridhumidity. ( Using equipment as described in Test 105, the samples are exposed to two complete 14-day extreme temperature cycles at 95% relative humidity. After 28 days, samples are examined and tested at ambient conditions for functioning. The decision on safety shall be based orIinspection and engineering judgment. If satisfactory from the safety viewpoint, all samples shall function to meet specification output requirement when initiated by the specification “all-fire” electrical input (see 4.1.2). 5.1.12 High frequency vibration.
Simple harmonic vibration shall be applied along each of the three mutually perpendicular axes of the samples for three ‘nours. The frequency range of 5 to 2,000 HZ shall be.covered by cycling at a logarithmic rate allowing twenty minutes for each 5 -“2000 - 5 HZ sweep. The vibration ampli- tude shall be maintained at 0.100 inch * 0.010 inch (peak-to–peak) from 5 to 14 Hz; at l.Og * O.lg from 14 to 23 Hz; 0.036 inch * 0.004 inch (peak-to-peak) from 23 to 74 Hz;”and at 10.Og t l.Og (peak) from 74 to 2000 Hz. The total tesci,ng ti~i~~titi(~ shall be nine hours. The twenty-four samples shall then be examined and Ewted for compliance with the criteria for passing (4.1.12). 5.1.13 Waterproofness.
The fifty samples shall be immersed in a container of water to a depth of 2 to 3 inches (5 to 8 ems) for a minimum of 48 “hours. The water temperature shall be maintained between 65°F’tO 75°F (18’c to 24=C). A standard firing fixture which will permit efficient transfer of input enefgy and allow for means of measuring output shall be used. An acceptable electrical input source as identified in Electric Initiator Handbook 3rd Edition shall be used to furnish the appropriate “all-fire” pulse, .the’stimulus of which will be dependent upon intended application, the same as used in the reliability test of 4.1.2.
Output measurements pertinent to the item under test will be made and 1 recorded for each test. I 6. NOTES I 6.1 Intended use. The purpose of this standard is design and conduct of tests for assessing the to withstand environmental stresses they will and to insure that plans and test results are ability of to standardize the explosive components encounter during their life cycle, adequately documented. Preparing activity: Army - AR Custodians: Army - AR Navy - OS Air Force - 99 Project No~ 1390-0219 User: MC I ; I