Study of SnO2 Gas Sensor Accelerated Degradation Test

2014 ◽  
Vol 667 ◽  
pp. 364-367 ◽  
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.

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

2013 ◽  
Vol 401-403 ◽  
pp. 1499-1502
Author(s):  
Ai Li Liu ◽  
Fang Yong Kou ◽  
Kun Hu Kou
Keyword(s):  
Data Processing ◽  
High Reliability ◽  
Reliability Assessment ◽  
Life Distribution ◽  
Accelerated Degradation ◽  
Degradation Data ◽  
Long Lifetime ◽  
Degradation Test ◽  
Accelerated Degradation Test

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.

Design of an Optimal Plan of Accelerated Degradation Test via Acceleration Factor Constant Principle

2018 ◽  
Vol 25 (05) ◽  
pp. 1850021 ◽  
Author(s):  
Fei Teng ◽  
Hao-Wei Wang ◽  
Yuan Zhou
Keyword(s):  
Optimal Design ◽  
Design Method ◽  
Asymptotic Variance ◽  
Acceleration Factor ◽  
Degradation Model ◽  
Accelerated Degradation ◽  
Optimal Design Method ◽  
Degradation Test ◽  
Accelerated Degradation Test ◽  
Factor Constant

Accelerated degradation test (ADT) has been extensively applied to reliability assessment. To improve the efficiency–cost ratio of ADT, the optimal design method of ADT has become a research hot topic. An optimal design method based on acceleration factor, in which a Wiener degradation model and a step-stress ADT were considered, was proposed in the paper. In order to establish an accurate accelerated degradation model, acceleration factor constant principle was applied to derive the changing rules of Wiener process parameters with accelerated stress. Besides, the exact expression of acceleration factor was determined for a Wiener degradation model. The asymptotic variance of acceleration factor, which was considered as a measure of the consistency of failure mechanisms, was selected to be the objective function of optimal problem so as to ensure that the failure mechanism of products under accelerated stresses is probably consistent with that under the normal use stresses. A numerical example of designing an optimal ADT plan for a certain type electrical connector was studied, in which the effectiveness and feasibility of the proposed method were validated.

Study on Electrical Contact Degradation Behavior of Beryllium Bronze

2013 ◽  
Vol 341-342 ◽  
pp. 109-113
Author(s):  
Ai Ai Zhang ◽  
Wei Fang Zhang ◽  
Yu Long Zhang ◽  
Shi Jun Zhao
Keyword(s):  
Contact Resistance ◽  
Normal Stress ◽  
Electrical Contact ◽  
Degradation Behavior ◽  
Arrhenius Model ◽  
Accelerated Degradation ◽  
Beryllium Bronze ◽  
Degradation Test ◽  
Accelerated Degradation Test ◽  
The Relationship

Aiming at electrical contact degradation behavior of beryllium bronze in storage, electrical contact accelerated degradation test was made. Choosing contact resistance as the performance degradation sensitive parameter, studied its degradation behavior by testing contact resistance of beryllium bronze under different temperature after different oxidized times. The result shows that the relationship between contact resistance and oxidized time is exponential and the lifetime of beryllium bronze samples at normal stress is 24.4 years when failure threshold is 100 mΩ and confidence is 95%, which is predicted by Arrhenius model related to temperature.

Step-Stress Accelerated Degradation Testing of NBR Sealing Ring

2013 ◽  
Vol 479-480 ◽  
pp. 55-59 ◽  
Author(s):  
Xiao Hong Wang ◽  
Li Zhi Wang ◽  
Xin Zhang ◽  
Qiu Xi Li
Keyword(s):  
Butadiene Rubber ◽  
Degradation Model ◽  
Accelerated Degradation ◽  
Compression Set ◽  
Drift Theory ◽  
Sealing Ring ◽  
Accelerated Degradation Testing ◽  
Degradation Testing ◽  
Degradation Measurement ◽  
Main Factor

As an important performance parameter of nitrile-butadiene rubber（NBR）sealing ring, the compression set is a main factor influencing rubber's life. Using the compression set amount as its degradation measurement and the temperature as accelerating stress, we perform the design and actual implementation of a set of accelerated degradation test of NBR considering step-stress. Then we evaluate the results using accelerated degradation model based on the drift theory of Brownian motion. Finally we get the estimation of reliable life of sealing ring under normal temperature. The research in this paper can also offer a new method for the application reliability and life evaluation of rubber products.

Reliability assessment of indium tin oxide thin films by accelerated degradation test

2006 ◽  
Vol 17 (2-4) ◽  
pp. 955-958 ◽  
Author(s):  
Yong-Nam Kim ◽  
Seong-Min Jeong ◽  
Min-Seok Jeon ◽  
Hyun-Gyoo Shin ◽  
Jun-Kwang Song ◽  
...  
Keyword(s):  
Thin Films ◽  
Tin Oxide ◽  
Indium Tin Oxide ◽  
Reliability Assessment ◽  
Oxide Thin Films ◽  
Accelerated Degradation ◽  
Degradation Test ◽  
Accelerated Degradation Test
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