作为一种高效的可靠性试验手段，加速退化试验在减少试验样本量、降低试验费用、缩短产品研制周期等方面颇具优势。然而，目前对加速退化试验建模理论的研究还不充分，特别是加速退化建模过程中充满了主观经验色彩，制约了可靠性评估的准确度与可信度。本项目拟将加速因子不变理论引入加速退化试验领域，揭示退化模型参数在任两个不同应力值下应该满足的变化规律，提出运用加速因子不变理论建立加速退化模型的新途径，突破基于经验假定加速退化建模的理论瓶颈。采用理论分析、仿真验证、实例应用相结合的研究方法，深入开展加速因子不变理论在加速退化试验中的应用研究，建立新的可靠性建模与评估方法、退化失效机理一致性分析方法、以及试验方案优化设计方法，形成基于加速因子不变理论的加速退化试验建模、分析与优化设计方法体系。研究成果能够完善、发展加速退化试验建模理论，提高可靠性评估的准确度与可信度，在涉及工业制造的各行业有巨大的应用价值。

As an efficient reliability test method, accelerated degradation test technology has advantages in decreasing test sample size, reducing test cost and shortening product development cycle. However, at present, the research on modeling accelerated degradation test is not enough, especially the process of establishing accelerated degradation model is full of subjective experience, which restricts the accuracy and credibility of reliability assessment. This project introduces the acceleration factor invariant theory into the fields of accelerated degradation test, reveals the changing law of the model parameters under any two different stress levels, and proposes a new technical approach to establish the accelerated degradation model based on the acceleration factor invariant theory, which breaks through the bottleneck of accelerated degradation modeling theory based on subjective experience. By combining theoretical analysis, simulation test and practical application, the application of acceleration factor invariant theory in accelerated degradation test is thoroughly studied. This project attempts to establish a new reliability modeling and assessment method, degradation failure mechanism consistency analysis method and optimization design method, so as to form a method system of modeling, analysis and optimization design based on acceleration factor invariant theory in the fields of accelerated degradation test. The research results can advance and promote the modeling theory of accelerated degradation test, improve the accuracy and credibility of reliability assessment, and have great application value in various industry involving manufacturing.