TOP-1-2-602, TEST OPERATING PROCEDURE (TOP): LABORATORY VIBRATION TEST SCHEDULE DEVELOPMENT FOR MULTI-EXCITER APPLICATIONS (17-AUG-2011)

TOP-1-2-602, TEST OPERATING PROCEDURE (TOP): LABORATORY VIBRATION TEST SCHEDULE DEVELOPMENT FOR MULTI-EXCITER APPLICATIONS (17-AUG-2011)., This Test Operating Procedure (TOP) is to be used as a guideline for development of Laboratory Vibration Test Schedules (LVTS) for Multiple Degree-of-Freedom (MDOF) scenarios. This Test Operating Procedure (TOP) presents considerations and techniques for developing Laboratory Vibration Test Schedules (LVTS) that can be utilized to simulate field vibration environments on a vibration table. Laboratory vibration tests are used extensively in lieu of more time-consuming and less cost effective field exposure tests. This TOP specifically addresses random vibration testing controlled to frequency-domain vibration spectra and is intended to address multiple “exciter” (also referred to as “shaker” or “actuator”) scenarios with the emphasis on mechanical multiple degree-of-freedom (MDOF) scenarios. There is a significant increase in complexity between single-exciter/single-axis (SESA) and multiple- exciter/multiple-axis (MEMA) testing in terms of both mechanics and control. MEMA specific issues ranging from definitions and nomenclature consistency, to data analysis techniques, will be addressed.