The cooler reliability is a major performance requested by the customers, especially for 24h/24h applications, which are a growing market. Thales has built a reliability policy based on accelerate ageing and tests to establish a robust knowledge on acceleration factors. The current trend seems to prove that the RM2 mean time to failure is now higher than 30,000hr. Even with accelerate ageing; the reliability growth becomes hardly manageable for such large figures. The paper focuses on these figures and comments the robustness of such a method when projections over 30,000hr of MTTF are needed.
Jean-Marc Cauquil, Cédric Seguineau, Christophe Vasse, Gaetan Raynal, and Tonny Benschop, "Lifetime validation of high-reliability (>30,000hr) rotary cryocoolers for specific customer profiles," Proc. SPIE 10626, Tri-Technology Device Refrigeration (TTDR) III, 106260H (Presented at SPIE Defense + Security: April 18, 2018; Published: 9 May 2018); https://doi.org/10.1117/12.2309792.
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