Downloaded from https://www.everyspec.com MIL-STD-81OC 10 .March1975 METHOD S14.2. VIBRATION 1. PURPOSE. The vibration test is performed to determine if equipment is constructed to withstand expected dynamic vibrational stresses and to insure that performance degradations or malfunctions will not be produced by the service vibration environment. Tests specified herein are established for equipment which may be used in a variety of military applications. 2. APPARATUS. Vibration equipment with required instrumentation. 3.
GENERAL The vibration test tables and figures provide a convenient mean~~arizing test procedures to be specified in the equipment specification or test plan according to various military applications. Each table title refers to the applicable category of the equipment to be tested. Guidance for selecting a test is as follows: a. Determine equipment category [or categories) in accordance with 3.1. b. Proceed to the designated table(s) and figure(s) corresponding to the applicable equipment category. Select a test based on the table instruc- tions, procedure, and figure designated. 3.1 Equipment category.
For purposes of this test method, equipment is categorized according to the vehicle in which it will be installed or transported as follows: Category Description Procedure Tab1e w a Equipment installed in air- planes and helicopters. An equipment intended for both aircraft and helicopters should be qualified for each installa- -- 514.1-1 514.1-1 (discontinu- (discontin- ued) ued) tion in turn. b.1 Equipment installed in propel- I 514.2-11 514.2-2 lor airplanes and equipment mounted directly to engines including jet engines. .b.2 Equipment installed in jet air- planes except for jet engine mounted equipment. IA 514.2-11A 514.2-2A 514.2-1 METHOD 514.2 10 March 1975