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Journal of Korean Society for Quality Management > Volume 38(4); 2010 > Article
Journal of Korean Society for Quality Management 2010;38(4): 504-.
기계식 시한 신관 KM577A1용 기폭관 저장수명 예측
장일호1, 박병찬1, 황택성2, 홍석환3, 백승준4, 손영갑4
1국방기술품질원
2충남대학교
3(주)한화 여수사업장
4안동대학교
Storage lifetime estimation of detonator in Fuse MTSQ KM577A1
Il-Ho Chang1, Byung-Chan Park1, Taek-Sung Hwang2, Suk-Whan Hong3, Seung-Jun Back4, Young-Kap Son4
1Defense Agency for Technology and Quality
2Chungnam National University
3Hanwha Co., Ltd.
4Andong National University
ABSTRACT
A fuze detonator comprising star shells is an important device so that its failure usually leads to failure of the shells. In this paper, accelerated degradation tests of RD1333 (lead azide) using temperature stress were performed, and then degradation data of explosive power for the detonator were analyzed to predict the storage lifetime of detonator. Degradation data analysis to estimate the storage lifetime is based on a distribution-based degradation process. Statistical distribution parameters of explosive power degradation measures at each time were estimated for each temperature level, and then reliability of the detonator for each accelerated temperature level was estimated using both time-varying distribution parameters and critical level of explosive power. Arrhenius model was applied to estimate storage lifetime of the detonator under the field temperature condition. Accelerated distribution-based degradation analysis to estimate storage lifetime is explained in detail, and estimation results are compared to field data of storage lifetime in this paper.
Key Words: Lead Azide;Detonator;Fuze;Storage Lifetime;Accelerated Degradation Test;One-Shot System;MTSQ(Mechanical Time, Superquick);
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