• CN: 11-2187/TH
  • ISSN: 0577-6686

Journal of Mechanical Engineering ›› 2020, Vol. 56 ›› Issue (16): 262-272.doi: 10.3901/JME.2020.16.262

Previous Articles    

Discussion on Performance Degradation Assessment of Long-term Storage Equipment

WEI Fayuan1, XIE Chaoyang1, SUN Changpu2, KANG Rui3   

  1. 1. Institute of Systems Engineering, China Academy of Engineering Physics, Mianyang 621900;
    2. Graduate School, China Academy of Engineering Physics, Beijing 100193;
    3. School of Reliability and Systems Engineering, Beihang University, Beijing 100191
  • Received:2019-12-03 Revised:2020-05-08 Online:2020-08-20 Published:2020-10-19

Abstract: Aimed for performance assessment of long-term storage equipment (LTSE) due to degradation, main features of LTSE such as "performance degradation", "environment change suddenly", "one-shot", "mission critical", are summarized. The degradation equation (DE) and functional equation (FE) are presented to describe the essential behaviours. Chance probabilities of performance margin (PM) and health status margin (HSM) are introduced to measure the reliability and service ability of LTSE. The key elements associated with the performance degradation assessment, including health status assessment, functionality assessment, reliability assessment, are elaborated. The technical framework for performance degradation assessment of LTSE are proposed. Scientific and technical problems related to performance degradation assessment of LTSE are listed, and they are degradation behaviour mechanism in complex environments, operation condition characterization and simulation, reliability assessment under multiple uncertainties and small sample size. Through the discussion, the concepts and the technical needs for performance degradation assessment of long-term storage equipment are clarified systematically.

Key words: long-term storage equipment, performance degradation, reliability assessment, health management

CLC Number: