现代防御技术 ›› 2025, Vol. 53 ›› Issue (3): 174-181.DOI: 10.3969/j.issn.1009-086x.2025.03.020

• 综合保障性技术 • 上一篇    

综合环境下两阶段加速寿命试验优化设计

刘晓娣1, 韩建立2, 李田科3, 吴一乔2   

  1. 1.海军航空大学 航空基础学院,山东 烟台 264001
    2.海军航空大学 岸防兵学院,山东 烟台 264001
    3.中国人民解放军91980部队
  • 收稿日期:2024-03-21 修回日期:2024-06-05 出版日期:2025-06-28 发布日期:2025-07-01
  • 作者简介:刘晓娣(1982-),女,山东昌邑人。副教授,博士,研究方向为加速寿命试验、装备可靠性。

Optimal Design of Two-Stage Accelerated Life Test Under Integrated Environment Stresses

Xiaodi LIU1, Jianli HAN2, Tianke LI3, Yiqiao WU2   

  1. 1.Aviation Foundation College,Naval Aviation University,Yantai 264001,China
    2.Coastal Defense College,Naval Aviation University,Yantai 264001,China
    3.PLA 91980 Troops
  • Received:2024-03-21 Revised:2024-06-05 Online:2025-06-28 Published:2025-07-01

摘要:

针对航空装备在寿命周期内不只经历一个任务阶段,而当前加速寿命试验(accelerated life test,ALT)优化设计大多仅关注单一任务阶段的情况,提出一种综合环境下两阶段ALT优化设计方法。该方法采用拉丁超立方设计(Latin hypercube design,LHD)确定两阶段试验整体的应力水平组合方式,解决前后阶段应力水平的组合问题;以两阶段试验中产品正常应力水平下P阶分位寿命估计的渐近方差之和最小为优化目标,构建优化设计的数学模型,解决前后阶段的样本分配问题。算例分析表明两阶段ALT优化设计方法的预测精度优于传统方法,参数敏感性分析表明该方法确定的最优试验方案具有一定的稳健性。该方法为实际工程中多任务阶段产品的ALT优化设计提供了一种新思路。

关键词: 加速寿命试验, 优化设计, 综合环境, 两阶段, 拉丁超立方设计, 样本分配

Abstract:

The life cycle of aviation equipment comprises more than one mission stage, yet most of the current ALT optimal design studies only focus on the situation of one mission stage. A two-stage ALT optimal design method under integrated environmental stresses is proposed. The Latin hypercube design theory is used to determine the overall stress level combination of the two-stage test, and to solve for the combination of stress levels between the pre- and post- stage. Taking the minimum sum of the asymptotic variance of the estimated P quantile life of the product under normal stress levels in the two-stage test as the optimization criterion, a mathematical model of the optimal design is constructed to solve the problem of sample allocation between the pre- and post- stage. The case analysis shows that the prediction accuracy of the method is superior to that of the traditional method, and the parameter sensitivity analysis shows that the optimal test plan determined by the method has robustness. This method provides a new idea for the ALT design of multi-stage task products in practical engineering.

Key words: accelerated life test(ALT), optimal design, integrated environment stresses, two-stage, Latin hypercube design(LHD), sample allocation

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