무기체계 고장률 예측의 정확도 향상을 위한 ANSI/VITA 51.1 적용 방안 연구 (Improving Weapon System Failure Rate Prediction Accuracy Using ANSI/VITA 51.1)

서지정보

· 발행기관 : 한국신뢰성학회
· 수록지 정보 : 신뢰성 응용연구 / 25권 / 1호 / 46 ~ 56페이지
· 저자명 : 장세준, 김용근, 오영일, 박은심, 김희욱

초록

Purpose: This paper introduces ANSI/VITA 51.1, which provides updated commercial grade quality factors for each type of weapon part to improve the accuracy of part failure rate calculations, and presents a detailed method that can be applied in practice. It also verifies the effectiveness of the proposed method in increasing the accuracy of failure rate prediction.
Methods: Two case studies were conducted to verify that the proposed method improves failure rate prediction accuracy. Case Study 1 compared the failure rate values calculated using the MIL-HDBK-217F Notice2 quality factors alone and those calculated using the MIL-HDBK-217F Notice2 and ANSI/VITA 51.1 quality factors together. Case Study 2 calculated two failure rates using the same methodology as Case Study 1 and compared them to actual weapon system failure rates to determine the failure rate prediction accuracy.
Results: In Case Study 1, we found an average reduction in failure rate predictions of 85% when using both ANSI/VITA 51.1 and MIL-HDBK-217F Notice2 quality factors compared to MIL-HDBK-217F Notice2 quality factors alone. In Case Study 2, the failure rate prediction accuracy was 41.9% when using MIL-HDBK-217F Notice2 quality factors alone and 75.6% when applying ANSI/VITA 51.1 and MIL-HDBK-217F Notice2 quality factors simultaneously, representing an increase of approximately 34%.
Conclusion: The use of the proposed quality factors improves failure rate prediction accuracy; thus, the application of ANSI/VITA 51.1 should be strongly encouraged.

영어초록

Purpose: This paper introduces ANSI/VITA 51.1, which provides updated commercial grade quality factors for each type of weapon part to improve the accuracy of part failure rate calculations, and presents a detailed method that can be applied in practice. It also verifies the effectiveness of the proposed method in increasing the accuracy of failure rate prediction.
Methods: Two case studies were conducted to verify that the proposed method improves failure rate prediction accuracy. Case Study 1 compared the failure rate values calculated using the MIL-HDBK-217F Notice2 quality factors alone and those calculated using the MIL-HDBK-217F Notice2 and ANSI/VITA 51.1 quality factors together. Case Study 2 calculated two failure rates using the same methodology as Case Study 1 and compared them to actual weapon system failure rates to determine the failure rate prediction accuracy.
Results: In Case Study 1, we found an average reduction in failure rate predictions of 85% when using both ANSI/VITA 51.1 and MIL-HDBK-217F Notice2 quality factors compared to MIL-HDBK-217F Notice2 quality factors alone. In Case Study 2, the failure rate prediction accuracy was 41.9% when using MIL-HDBK-217F Notice2 quality factors alone and 75.6% when applying ANSI/VITA 51.1 and MIL-HDBK-217F Notice2 quality factors simultaneously, representing an increase of approximately 34%.
Conclusion: The use of the proposed quality factors improves failure rate prediction accuracy; thus, the application of ANSI/VITA 51.1 should be strongly encouraged.

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