Scholarlink

<p>In a situation of both cognitive uncertainty and objective randomness, reliability models subject to delayed and instantaneous failures are constructed in this paper. Initially, an uncertain fractional degradation process with memory is introduced, and shocks are modeled as random processes. Considering the system’s physical characteristics and external disturbance, failure thresholds are quantified as variables with two types of indeterminacy. Next, using the proposed belief reliability indexes, reliability formulas in specific cases are derived by chance measures. To ensure that the system performs required functions without failures, periodic maintenance and aging test-based preventive maintenance strategies are adopted. Finally, a numerical example of metal stents is carried out to verify the effectiveness of the proposed methods.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Belief reliability analysis and maintenance modeling of uncertain random fractional systems

  • 期刊论文

  • 发表日期：

    2025年12月19日

查看全文
  • Qinqin Xu

摘要

In a situation of both cognitive uncertainty and objective randomness, reliability models subject to delayed and instantaneous failures are constructed in this paper. Initially, an uncertain fractional degradation process with memory is introduced, and shocks are modeled as random processes. Considering the system’s physical characteristics and external disturbance, failure thresholds are quantified as variables with two types of indeterminacy. Next, using the proposed belief reliability indexes, reliability formulas in specific cases are derived by chance measures. To ensure that the system performs required functions without failures, periodic maintenance and aging test-based preventive maintenance strategies are adopted. Finally, a numerical example of metal stents is carried out to verify the effectiveness of the proposed methods.