Storage Life Estimation of Magnesium Flare Material for 81 mm Illuminating Projectile

Title & Authors
Storage Life Estimation of Magnesium Flare Material for 81 mm Illuminating Projectile
Back, Seungjun; Son, Youngkap; Lim, Sunghwan; Myung, Inho;

Abstract
It is necessary to both analyze root-cause of non-conformance of effective illumination time to the specification, and estimate the storage lifetime for 81 mm illuminating projectile stockpiled over 10 years. In this paper, aging mechanism of magnesium flare material due to long-term storage was supposed, and two-stage tests, pre-test and main test based on accelerated degradation tests were performed. Field storage environment of moistureproof was set up, and illumination times in the accelerated degradation tests for temperatures 60 and $\small{70^{\circ}C}$ were measured. Then, storage reliability of the projectile was estimated through analyzing the measured data and applying distribution-based degradation models to the data. The $\small{B_{10}}$ life by which 10 % of a population of the projectiles will have failed at storage temperature of $\small{25^{\circ}C}$ was estimated about 7 years.
Keywords
Language
Korean
Cited by
1.
차기 적외선 섬광제 저장수명 예측,백승준;손영갑;김남진;권태수;

한국군사과학기술학회지, 2016. vol.19. 3, pp.311-318
2.
Storage reliability estimation of one-shot systems using accelerated destructive degradation data,;;

Journal of Mechanical Science and Technology, 2016. vol.30. 10, pp.4439-4442
1.
Storage reliability estimation of one-shot systems using accelerated destructive degradation data, Journal of Mechanical Science and Technology, 2016, 30, 10, 4439
2.
Storage Life Estimation of Next Infrared Flare Material, Journal of the Korea Institute of Military Science and Technology, 2016, 19, 3, 311
References
1.
Kashporov, L. Y., "Burning Velocity of Two- Component Mixtures of Magnesium With Sodium Nitrate," Combustion, Explosion, and Shock Waves, Vol. 30, No. 5, pp. 608-616, 1994.

2.
Rao, R. B., "Agglomeration of Magnesium Particles in Magnesium-Sodium Nitrate Combustion," Propellants, Explosives, Pyrotechnics, Vol. 21, No. 6, pp. 319-324, 1996.

3.
Ellern, H., "Military and Civilian Pyrotechnics," Chemical Publishing Company Inc., USA, 1968.

4.
Patekar, K. A., "Long Term Degradation of Resin for High Temperature Composites," Massachusetts Institute of Technology, USA, 1998.

5.
Leterrier, Y., Singh, B., Bouchet, J., Manson, J., Rochat, G., Fayet, P., "Supertough UV-Curable Silane/Silica Gas Barrier Coating on Polymers," Surface & Coatings Technology, Vol. 203, No. 22, pp. 3398-3404, 2009.

6.
Meeker, W. Q., Escobar, L. A., "Statistical Methods for Reliability Data," Wiley, USA, 1998.

7.
Hines, W., Montgomery, D. C., "Probability and Statistics in Engineering and Management Science," Wiley, USA, 1990.

8.
Liao, H., Elsayed, A. E., "Reliability Inference for Field Conditions from Accelerated Degradation Testing," Naval Research Logistics, Vol. 53, No. 6, pp. 577-587, 2006.

9.
Magaroi, R. T., Murphy, K. P., Fernandez, T., "Accelerated Stability Model for Predicting Shelf- Life," Journal of Clinical Laboratory Analysis, Vol. 16, No. 5, pp. 221-226, 2002.

10.
Wu, C. C., Lee, G., "Oxidation of Volatile Organic Compounds by Negative Air Ions", Atmospheric Environment, Vol. 38, No. 37, pp. 6287-6295, 2004.

11.
Nachlas, J. A., "Reliability Engineering Probabilistic Models and Maintenance Methods," CRC Press, USA, 2005.