近年來可靠度工程在概念及應用上已日趨成熟，普遍的應用於工業中； 除了一般產品的品質控制之外，以可靠度觀點切入設計端對產品缺陷加以改 善更使我們得以對產品品質提供更為完善的保障。 有鑑於此，在考慮產品失效問題時僅依靠以往將最大發生機率之失效機 制視為唯一失效機制進行可靠度分析的作法已不足以因應今日對產品壽命 估計精確度的需求，對於產品在設計上缺陷的修改以至於後續的保養維修策 略亦無法有更佳之策略提供；加上隨著產品壽命的提高，加速壽命試驗的大 量使用、系統的複雜化，忽視影響較次的失效機制對產品壽命所帶來的影響 將會造成嚴重的問題。儘管如此，此一問題仍未受到足夠的關注以及完整的 理論體系。 本研究之目的在於探討加速壽命試驗下複數的失效機制其競爭失效模 式之行為與影響；利用一代數型動態可靠度模式對競爭失效模式進行分析探 討，並與目前最為廣泛使用之韋伯分佈做比較，研究此模式之適用性以及特 性，進而提出一混合型競爭失效模式以期對多元化失效機制做更深入的探 討。 In recent years, the conception and application in reliability engineering are becoming mature. Except maintain the quality of products, using reliability idea to improve design problem offering more faultless guarantee on products. In view of this, take the most serious failure mode as the only one in reliability analyzing is surely not enough to answer the requirement of precise reliability life today nor supply a better advice in design problem and maintenance device. As product life extend, the popular in accelerated life testing, and the system complexity, to ignore less effect failure mode will carried a serious problem on life estimation. Even so, this question does not receive enough concern and intact theoretical system yet. In this paper, we conferred the behavior and effect of competing failure modes on accelerated life test. Analyzing by a algebraic reliability mode and compare the result with the Weibull distribution to discuss it’s characteristic and usability. At last we bring up a mixed competing failure model and expect deep discussion in this subject.
