
[試驗] 加速壽命試驗
With the development of science technology and economy, step-stress accelerated life test becomes an important method.
隨着科學技術和經濟的發展,步進應力加速壽命試驗成為一種主要的試驗方法。
Highly Accelerated Life Test(HALT) is an emerging technology, it is performed during design to find the weak reliability links in the product.
高加速壽命試驗(HALT)是一種新興技術,它使用在産品的設計階段,用于快速暴露産品的缺陷和薄弱環節。
Fourthly, proposed and researched optimizing design mode of constant stress accelerated life test plans under the temperature and vibration stresses.
第四,提出并研究了電連接器在環境溫度和振動應力綜合作用下的加速壽命試驗方案的優化設計模型。
The changes of the electric match composition at different time simulating accelerated life test were analysed by X-ray diffraction.
采用X-射線衍射實驗,分析了電點火頭在非密封加速壽命試驗後各個時間點上藥劑組分的變化情況。
Based on the similarity theory of the accelerated life test, the accelerated life test of concrete was carried out with the multi-channel and adjustable-voltage chloride ion penetration test setup.
基于壽命加速實驗的相似理論,采用多通道變電壓氯離子滲透實驗裝置對混凝土進行了加速壽命實驗。
The lives of corrugated boxes is stu***d by the means of accelerated life test. The air relative humidity (H) and vertical load(G) are selected here to stu***d the lives of corrugated boxes.
選用空氣相對濕度H和垂直載荷G為加速應力,用加速壽命試驗法對瓦楞紙箱壽命進行研究。
The key point of data processing in fuze step-stress accelerated life test is the estimation of the distribution parameters of fuze storage life.
引信的步進應力加速壽命試驗數據處理的關鍵是其貯存壽命分布參數的估計。
Basing on the study of progressive stress accelerated life test, a rapid evaluation method for electronic device's activation energy is proposed, and the theory model is constructed.
通過對序進應力加速壽命試驗的研究,提出了一種快速評價微電子器件失效激活能的方法,建立了計算失效激活能的理論模型。
Assessment results of the whole life time of a bearing by accelerated life test validate the feasibility and effectiveness of this method.
通過對軸承加速疲勞壽命試驗中全壽命周期的評估,驗證了所提出方法的可行性和有效性。
The basic theory and methods of accelerated life test were presented.
闡述了加速壽命試驗的基本原理、方法。
In this article, the writer analyzes time conversion and method of inverse monent on double alternative step-stress accelerated life test for Weibull distribution.
首先針對高可靠、長壽命電子裝備的可靠性評估問題,提出一種新的試驗方法——雙應力交叉步階試驗。
Third, proposed and researched optimizing design mode of constant stress accelerated life test plans under the temperature and vibration stresses.
第三,提出并研究了電連接器在環境溫度和振動應力綜合作用下的加速壽命試驗方案的優化設計模型。
A plan was given to recovery energy in accelerated life test for the aero hydraulic pump.
最後探讨了航空液壓泵加速壽命試驗台的節能設計方案。
Constant-stress accelerated life test is a kind of effective and economic trial method in the product life span experiment.
恒定應力加速壽命試驗是産品壽命試驗中一種有效的、經濟的試驗方法。
Strength and bending resistance test, welding heat test and highly accelerated life test (HALT) were retested up to grade.
經瓷體強度實驗、抗彎曲實驗、耐焊接熱實驗、加速壽命實驗,其各項指标均合格。
Confidence interval of the coefficient of acceleration is derived based on step-stress accelerated life test data.
在定數截尾和定時截尾步加試驗情形,導出了加速系數的置信區間。
Based on the expounding of the prediction theory for storage life of electromagnetic relays, the constant stress accelerated life test was introduced.
在闡述電磁繼電器貯存壽命預測理論的基礎上,選擇了采用恒定應力加速壽命試驗方法對電磁繼電器進行試驗及壽命預測。
Fourth, the pilot project of accelerated life test for the transmitter and receiver has been designed, and an example is given to show the method of dealing with the test result.
第四,針對發送器和接收器設計了加速壽命試驗的試驗方案,并以一個算例預先研究了試驗結果的處理方法。
Progressive stress accelerated life test is the most efficient and economical way of life tests.
引信的步進應力加速壽命試驗數據處理的關鍵是其貯存壽命分布參數的估計。
In this paper, resorting the method of survival analysis we make statistical analysis of life test of tank divided phase. It is explained for the reasonable of tank accelerated life test.
本文用生存分析方法,對坦克分段壽命試驗進行了統計分析,并從理論上說明了坦克分段壽命試驗的合理性。
Theresults of accelerated life test have shown that aluminum corrosion failure wasprevented effectively. The median life of the improved devices was increased by9.2 times.
經過加速壽命對比試驗和對試驗後樣品的觀察分析,表明鋁腐蝕失效得到了有效防止,改進後産品的中位壽命比原産品約有一個數量級的提高。
In this paper we have given the statistical analysis methods of the data from step-stress-accelerated life test under the exponential distribution case.
給出了指數分布場合下步加壽命試驗的統計方法。
A ****** step-stress accelerated life test (ALT) is a step-stress ALT with only two higher stresses.
僅含有二個高應力的步加試驗稱為簡單步加試驗。
Besides, storage reliability evaluation technology such as field storage, long-term storage test, limit stress test and accelerated storage life test are compared in utility.
并從應用性角度出發,對現場貯存、長期自然貯存試驗、極限應力、加速貯存壽命試驗等貯存可靠性評價技術進行了對比分析。
Aiming at the one-off characteristics of pyrotechnics, an optimum design method of the accelerated storage life test was advanced based on its activation energy.
深彈貯存壽命試驗是考核産品壽命能否達到可靠性指标的關鍵内容,目的是檢驗在包裝箱内、倉庫保管條件下,深彈貯存壽命是否滿足研制要求。
In the era of Cu process, optimization of the acceleration factor is the key to present the failure mode under accelerated life time test.
銅制程世代,加速壽命試驗下的失效模式是否具有代表性,關鍵是如何掌握適當的加速因子。
加速壽命測試(Accelerated Life Test)是一種通過施加高于正常使用條件的應力水平,以縮短産品失效時間并預測其可靠性的實驗方法。該技術廣泛應用于電子元件、汽車零部件、醫療器械等領域,幫助制造商評估産品在極端環境下的性能退化規律(來源:美國國家标準與技術研究院,NIST)。
其核心原理基于"時間-應力等效模型",通過數學公式建立加速因子(Acceleration Factor)與失效機制的關系。例如,阿倫尼烏斯方程常用于溫度加速測試: $$ AF = e^{frac{Ea}{k} left( frac{1}{T{use}} - frac{1}{T_{stress}} right)} $$ 其中$E_a$為激活能,$k$為玻爾茲曼常數,$T$為絕對溫度(來源:IEEE可靠性工程手冊)。
典型測試方法包含:
該技術通過實驗數據拟合威布爾分布或對數正态分布模型,推導出産品在正常使用條件下的平均無故障時間(MTTF)(來源:NASA可靠性分析中心技術報告)。例如某半導體器件在125℃下1000小時的測試結果,可等效推算85℃環境中的10年使用壽命。
Accelerated Life Test(加速壽命試驗) 是一種通過模拟極端條件快速評估産品壽命和可靠性的測試方法。以下是詳細解釋:
如需更完整的行業标準或具體案例,可參考、5、6的原始來源。
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