파워스티어링 호스의 필드고장 재현을 통한 누유경로 파악

다국어 초록 (Multilingual Abstract)

Generally, a leakage in a high pressure hose assembly can be determined if hydraulic fluid falls down through fitting which is swaged with a rubber hose. This study tried to visualize leakage, which is considered a failure occurring often in the hydraulic system. In the case of methods which verify leakage paths in the power steering hydraulic system equipped with a high pressure hose assembly, three types of leakage paths, which could be seen by cutting the swaging part, were generally found. However, it was difficult to find out leakage paths by using power steering oil. In this study, four methods, including the thermal burn image method, the hole drilling method of fitting metal, the white paint infiltration method, and the fluorescent infiltration method, were tried to introduce. Reappearance test methods in the high pressure hose assembly, which include a hole drilling, a white paint infiltration, and a fluorescent infiltration method, can be applied to find the failure mode and to approve the test before the mass production of the high pressure hose. Finally, we found the leakage path of the power steering hose by the fluorescent infiltration method and that can be useful to modify and old system.

목차 (Table of Contents)

• Abstract
• 1. 서론
• 2. 고장모드 소개
• 3. 누유경로 파악 시험기법
• 4. 고장모드 재현결과 및 고찰
• 5. 누유재현 시험법 개발
• 6. 누유 재현시험 개선안 검증
• 7. 결론
• 후기
• 참고문헌