This study is to deal with the cause analysis and improvement ideas for breakage to hydraulic pipes mounted on self-propelled howitzers. Hydraulic piping is one of the core components of a hydraulic system. This is because in the case of devices that use hydraulic pressure as a power source, hydraulic oil is supplied through hydraulic piping to operate. Compared to the main hydraulic assembly, its importance is low, so there are not many studies or failure analysis cases on it. However, contrary to this, cases of hydraulic pipe failure account for a significant proportion of the total number of failures, requiring in-depth technical review. In this study, we aim to analyze the causes of failures in hydraulic pipes of self-propelled guns operated by the military and propose improvement measures. It is expected that this study will aid as a reference for problem solving when similar failures occur in the future.

Abstract
1. 서 론
2. 파손품 현상 분석
    2.1 현상 분석 개요
    2.2 파손품 육안 확인
    2.3 파단면 분석결과
3. 파손 원인 세부 검토
    3.1 파손 원인 인자 분석
    3.2 부품 단계 파손 인자 분석
    3.3 조립 단계 파손 인자 분석
    3.4 운용 단계 파손 인자 분석
4. 개선방안 검토
5. 결 론
References

• 김현수(Defense Agency for Technology and Quality) | Hyunsu Kim Corresponding author
• 박영진(Hanwha Aerospace Co., Ltd.) | Youngjin Park