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http://dx.doi.org/10.5139/JKSAS.2021.49.7.565

Study of Aging and Performance About Separation Devices Has Been Stored  

Kim, Dong-seong (Defense Reliability Center, Defense Agency for Technology and Quality)
Jin, Hong-Sik (Defense Reliability Center, Defense Agency for Technology and Quality)
Publication Information
Journal of the Korean Society for Aeronautical & Space Sciences / v.49, no.7, 2021 , pp. 565-572 More about this Journal
Abstract
In this study, a study on the performance and aging of explosive bolts stored for a long time among pyrotechnic mechanical devices(PMD) used as separation devices in the defense field is conducted. For this, explosive bolts that had been installed in the weapon system for about 10 years are secured. Performance and life extension test procedures are established based on the AIAA Standard and MIL-STD. Before performance evaluation, non-functional tests are performed to check whether external changes or failures occurred. Next, circuit inspection and X-ray tests are conducted to check the failure in internal circuits and structures. After that, performance test is carried out to confirm the operation of the samples that passed the non-functional test. Through this test, separation of bolt and separation time are measured, and some samples are tested after a high temperature storage test to confirm the remaining life and the possibility of extension. Finally, the remaining life and reliability are predicted based on the results of the test and the Arrhenius model to identify remaining shelf life and reliability depend on time.
Keywords
Aging; Charge; Pyrotechnic Mechanical Devices; Separation Devices; Explosive Bolts; Shelf Life;
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