Study on Reliability Assessment of Degradation Date Based on Pseudo Life Distribution

In order to develop the reliability assessment of high-reliability and long-lifetime products, analyses for accelerated degradation test is discussed in this article. First, a method of building degradation path is presented; second, the means of degradation data processing is analyzed; finally, an example is presented and validity of this method is verified.

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Statistical Analysis of the Degradation Data Based on Pseudo-Life Distribution

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.933.784 ◽

2014 ◽

Vol 933 ◽

pp. 784-788 ◽

Cited By ~ 1

Author(s):

Jun Sheng Wang ◽

Yi Zhou He ◽

Yi Dong Wang ◽

Wei Hua Liu

Keyword(s):

Continuous Time ◽

Life Prediction ◽

High Reliability ◽

Reliability Assessment ◽

Time Function ◽

Life Distribution ◽

Accelerated Degradation ◽

Degradation Data ◽

Long Life ◽

Degradation Test

Focus on solving the life and reliability problems of long-life and high reliability products, a method of modeling and parameter estimation on reliability evaluation and life prediction with accelerated degradation data was proposed in this paper. In the first, three statistical methods of degradation test were analyzed, then according to the features of accelerated degradation data, the statistical model of degradation data based on pseudo-life was established. This method can effectively utilize the horizontal information of degradation data of product under different accelerated stress level, and integrate the advantage that continuous-time function model fits the degradation curve of product strongly, and improve the accuracy of reliability assessment and life prediction of product.

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Reliability assessment of LED luminaires based on step-stress accelerated degradation test

2012 13th International Conference on Electronic Packaging Technology & High Density Packaging ◽

10.1109/icept-hdp.2012.6474890 ◽

2012 ◽

Cited By ~ 3

Author(s):

Rongbin Ren ◽

Daoguo Yang ◽

Miao Cai ◽

Ming Gong

Keyword(s):

Reliability Assessment ◽

Accelerated Degradation ◽

Degradation Test ◽

Accelerated Degradation Test

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A zero-failure accelerated degradation test under ramp–soak–stress loading

Proceedings of the Institution of Mechanical Engineers Part O Journal of Risk and Reliability ◽

10.1177/1748006x17743136 ◽

2017 ◽

Vol 232 (3) ◽

pp. 262-273 ◽

Cited By ~ 1

Author(s):

Preeti Wanti Srivastava ◽

Manisha

Keyword(s):

High Reliability ◽

Asymptotic Variance ◽

Optimum Number ◽

Test Duration ◽

Accelerated Degradation ◽

Proposed Model ◽

Method Of Maximum Likelihood ◽

Optimum Plan ◽

Degradation Test ◽

Accelerated Degradation Test

This article deals with the design of optimal ramp–soak–stress accelerated degradation test using Wiener process for modeling degradation paths. In an accelerated degradation test, failure occurs when the performance characteristic crosses the critical value the first time. Accelerated degradation test is incorporated in zero-failure reliability demonstration test to facilitate reduction in the test duration resulting in reduction in the test cost of high-reliability items. The parameters in model are estimated using method of maximum likelihood. The optimum plan consists in finding out optimum number of ramp–soak–stress cycles, optimum number of specimens, optimum stress change point(s), and optimum stress rates by minimizing asymptotic variance of estimate of [Formula: see text] quantile of the lifetime distribution at use condition subject to the constraint that total testing or experimental cost does not exceed a prespecified budget. An example is given to illustrate the proposed model, and sensitivity analysis is also carried out.

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Study of SnO2 Gas Sensor Accelerated Degradation Test

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.667.364 ◽

2014 ◽

Vol 667 ◽

pp. 364-367 ◽

Cited By ~ 1

Author(s):

Hui Juan Yuan ◽

Jun Zhong Li ◽

Zi Mei Su ◽

En Jing Zhang ◽

Ying Yang ◽

...

Keyword(s):

Normal Stress ◽

Gas Sensor ◽

Reliability Assessment ◽

Degradation Model ◽

Accelerated Degradation ◽

Accelerated Degradation Testing ◽

Degradation Test ◽

Accelerated Degradation Test ◽

Degradation Testing ◽

Accelerate Degradation

According to the reliability assessment of the SnO2 gas sensor, an accelerate degradation model was established by using temperature as the accelerated stress, the constant stress accelerated degradation testing (CSADT) was designed and conducted. The reliability of SnO2 gas sensor under the normal stress level was assessed based on pseudo life.

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