Reliability analysis for thermal cutting method based non-explosive separation device

• Published in: Journal of mechanical science and technology Vol. 30; no. 12; pp. 5433 - 5438
• Main Authors: Choi, Junwoo, Hwang, Kukha, Kim, Byungkyu
• Format: Journal Article
• Language: English
• Published: Seoul Korean Society of Mechanical Engineers 01.12.2016; Springer Nature B.V; 대한기계학회
• Subjects: Burns; Coils; Control; Cutting equipment; Devices; Dynamical Systems; Engineering; Exploding wires; Failure analysis; Failure modes; Fault tree analysis; Industrial and Production Engineering; Mechanical Engineering; Power supplies; Quantitative analysis; Reliability; Reliability analysis; Separation; Vibration; Wire; 기계공학; Thermal cutting; Non-explosive separation device; Reliability analysis; Fault tree analysis; Reliability; Quantitative analysis
• ISSN: 1738-494X; 1976-3824
• DOI: 10.1007/s12206-016-1111-8

In order to increase the reliability of a separation device for a small satellite, a new non-explosive separation device is invented. This device is activated using a thermal cutting method with a Ni-Cr wire. A reliability analysis is carried out for the proposed non-explosive separation device by applying the Fault tree analysis (FTA) method. In the FTA results for the separation device, only ten single-point failure modes are found. The reliability modeling and analysis for the device are performed considering failure of the power supply, the Ni-Cr wire burns failure and unwinds, the holder separation failure, the balls separation failure, and the pin release failure. Ultimately, the reliability of the proposed device is calculated as 0.999989 with five Ni-Cr wire coils.