scholarly journals Design of the fiber optic support system and fiber bundle accelerated life test for VIRUS

2010 ◽  
Author(s):  
Ian M. Soukup ◽  
Joseph H. Beno ◽  
Richard J. Hayes ◽  
James T. Heisler ◽  
Jason R. Mock ◽  
...  
Keyword(s):  
Support System ◽  
Fiber Bundle ◽  
Fiber Optic ◽  
Accelerated Life Test ◽  
Life Test ◽  
Accelerated Life

Accelerated Reliability Methodologies for Electronic Components: A Case Study

2002 ◽  
Author(s):  
Nick Strifas ◽  
John Fraysse ◽  
Massimo Ruzzene
Keyword(s):  
Fiber Optic ◽  
Accelerated Life Test ◽  
Fiber Optic Sensor ◽  
Time To Failure ◽  
Electronic Components ◽  
Life Test ◽  
Life Distribution ◽  
Optic Sensor ◽  
Accelerated Life

The procedures of estimating the time to failure from accelerated test data are reviewed in this study. An accelerated life test approach which provides the desired reliability results for a fiber optic sensor in shorter times than would be possible with a test performed under normal stress conditions is presented. Utilizing ReliaSoft ALTA software the statistical and life distribution that describe the time to failure of the sensor is determined and the desired reliability results are calculated using the level probability density function.

Study of High-Power White LED's Lifetime Based on Accelerated Life Test

2013 ◽  
Vol 800 ◽  
pp. 205-209 ◽  
Author(s):  
De Sheng Li ◽  
Nian Yu Zou ◽  
Yun Cui Zhang ◽  
Xiao Yang He ◽  
Yi Yang
Keyword(s):  
High Power ◽  
Accelerated Life Test ◽  
Reliability Test ◽  
White Led ◽  
Life Test ◽  
Arrhenius Model ◽  
White Leds ◽  
Accelerated Life ◽  
Temperature Levels

The study of LED reliability becomes more and more important with LED widely used in various areas, and accelerated life test (ALT) as an element of reliability test is widely used to predict the lifetime of LED. In this paper, ALTs have been carried out at various current levels and various temperature levels. In the current ALT experiment, three kinds of stressing currents were demonstrated for 1W white LEDs and lumen flux of the tested LEDs were studied, and based on Eyting model, lifetime of the tested LEDs is calculated about 6.86×105h. In the temperature ALT experiment, two kinds of stressing temperature were demonstrated for the same type of white LEDs and lumen flux were also studied, and based on Arrhenius model, lifetime of the tested LEDs is calculated about 7.41×105h. In addition, the color shifting velocity is faster than lumens depreciation velocity was observed in our experiment, which means the lifetime evaluating of white LED should be paid more attention.

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