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題名 | 失效數截止步降與步進應力加速壽命試驗時間模擬=Simulation on Test Duration of Step-down and Step-up Stress Accelerated Life Testing with Failure Censored |
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作者姓名(中文) | 沈盈志; | 書刊名 | 新新科技年刊 |
卷期 | 11 2015.01[民104.01] |
頁次 | 頁291-300 |
分類號 | 595 |
關鍵詞 | 步降應力; 步進應力; 加速壽命試驗; 步加試驗; 截止數據; 壽命推估; Step-down stress; Step-up stress; Accelerated life testing; ALT; Censored Data; Life estimation; |
語文 | 中文(Chinese) |
中文摘要 | 本文模擬數種壽命分佈模型,於相同失效數截止試驗條件下,估算不同分布之步降與步進應力施加方式所對應的試驗時間,探討壽命分佈參數及劣化參數對驗測時間的影響程度,提供可靠度工程師作為加速壽命驗測規劃之參考。模擬結果顯示坽提高最低應力水準即能有效縮短試驗時間;夌產品呈指數壽命分佈,或失效屬隨機特性者,採用步進應力加速法較為有利;奅產品壽命變異越小,或失效損傷記憶特性越強者,步降應力加速法所獲得試驗效益越高。 |
英文摘要 | This article presents several test duration simulations for step-down stress and step-upstress accelerated life testing (ALT) with failure censored under different distributions. Inaddition, it explores the effects of parameters of life-distribution models and accelerated-lifemodel. The results show that (1) increasing the minimum stress level can shorten test durationdramatically, (2) the step-up stress ALT is comparatively favorable for the product withexponential-life-distribution or random-failure characteristic, and (3) the lower the coefficientof variation is, or the higher the shape parameter of life-distribution is, the more effective thestep-down stress ALT will be. |
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