| Efficient Process Control Through Research on Storage Lifetime of a White Smoke Hand Grenade, KM8 |
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Il-Ho Chang, Suk-Hwan Hong, Seung-Jun Back, Young-Kap Son |
1Defense Agency for Technology and Quality
2Hanwha Co., Ltd.
3Andong National University |
| 저장수명 연구를 통한 백색 연막수류탄(KM8)의 공정관리 효율화 |
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장일호, 홍석환, 백승준, 손영갑 |
1국방기술품질원
2(주)한화 여수사업장
3안동대학교 |
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| Abstract |
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A white smoke hand grenade, KM8 is used to make smoke screen in order to provide visual field interceptions or signals. The grenade fails when its time to emit smoke is longer than the specified emission time so that the smoke concentration becomes lighter. This paper considered failure in smoke emission time, and evaluated its storage lifetime. The main objective of this paper is to modify the present specification limits of smoke emission time for the efficient process control in manufacturing, through analyzing effect of its specification change on the storage lifetime, based on the lifetime evaluation results. Accelerated degradation test was performed and then failure in smoke emission time was reproduced from the test. And estimated storage lifetimes from the accelerated test results was compared to evaluated lifetimes of grenades using the ASRP data. Past process testing results of the grenade in manufacturing were analyzed in this paper. Then, each storage lifetime for the specifications, ${pm}3$ and ${pm}5$ in seconds, extended from the current specification in manufacturing were estimated using the past testing results, and compared to one another. |
| Key Words:
Smoke Hand Grenade, Storage Lifetime, Accelerated Degradation Testing, Process Control |
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